Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.
Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)
Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.
A method of recording heart motion and internal structures by combining ultrasonic imaging with exercise testing (EXERCISE TEST) or pharmacologic stress.
Echocardiography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image.
Echocardiography applying the Doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return.
A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY.
The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.
A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.
The valve between the left atrium and left ventricle of the heart.
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.
Backflow of blood from the LEFT VENTRICLE into the LEFT ATRIUM due to imperfect closure of the MITRAL VALVE. This can lead to mitral valve regurgitation.
Pathological conditions involving the HEART including its structural and functional abnormalities.
The chambers of the heart, to which the BLOOD returns from the circulation.
Developmental abnormalities in any portion of the ATRIAL SEPTUM resulting in abnormal communications between the two upper chambers of the heart. Classification of atrial septal defects is based on location of the communication and types of incomplete fusion of atrial septa with the ENDOCARDIAL CUSHIONS in the fetal heart. They include ostium primum, ostium secundum, sinus venosus, and coronary sinus defects.
Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).
Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
Period of contraction of the HEART, especially of the HEART VENTRICLES.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
Developmental abnormalities involving structures of the heart. These defects are present at birth but may be discovered later in life.
Tumors in any part of the heart. They include primary cardiac tumors and metastatic tumors to the heart. Their interference with normal cardiac functions can cause a wide variety of symptoms including HEART FAILURE; CARDIAC ARRHYTHMIAS; or EMBOLISM.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.
Contractile activity of the MYOCARDIUM.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
The valve between the left ventricle and the ascending aorta which prevents backflow into the left ventricle.
Agents that have a strengthening effect on the heart or that can increase cardiac output. They may be CARDIAC GLYCOSIDES; SYMPATHOMIMETICS; or other drugs. They are used after MYOCARDIAL INFARCT; CARDIAC SURGICAL PROCEDURES; in SHOCK; or in congestive heart failure (HEART FAILURE).
The heart of the fetus of any viviparous animal. It refers to the heart in the postembryonic period and is differentiated from the embryonic heart (HEART/embryology) only on the basis of time.
Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (Mayo Clin Proc 1993;68:221-40)
Substances used to allow enhanced visualization of tissues.
Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
This structure includes the thin muscular atrial septum between the two HEART ATRIA, and the thick muscular ventricular septum between the two HEART VENTRICLES.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
The circulation of blood through the CORONARY VESSELS of the HEART.
A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.
Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.
Pathological condition characterized by the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to regurgitation. It is caused by diseases of the AORTIC VALVE or its surrounding tissue (aortic root).
The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.
The hollow, muscular organ that maintains the circulation of the blood.
A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Abnormal protrusion or billowing of one or both of the leaflets of MITRAL VALVE into the LEFT ATRIUM during SYSTOLE. This allows the backflow of blood into left atrium leading to MITRAL VALVE INSUFFICIENCY; SYSTOLIC MURMURS; or CARDIAC ARRHYTHMIA.
A group of diseases in which the dominant feature is the involvement of the CARDIAC MUSCLE itself. Cardiomyopathies are classified according to their predominant pathophysiological features (DILATED CARDIOMYOPATHY; HYPERTROPHIC CARDIOMYOPATHY; RESTRICTIVE CARDIOMYOPATHY) or their etiological/pathological factors (CARDIOMYOPATHY, ALCOHOLIC; ENDOCARDIAL FIBROELASTOSIS).
Narrowing of the passage through the MITRAL VALVE due to FIBROSIS, and CALCINOSIS in the leaflets and chordal areas. This elevates the left atrial pressure which, in turn, raises pulmonary venous and capillary pressure leading to bouts of DYSPNEA and TACHYCARDIA during physical exertion. RHEUMATIC FEVER is its primary cause.
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).
The hemodynamic and electrophysiological action of the LEFT ATRIUM.
A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752)
The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.
The geometric and structural changes that the HEART VENTRICLES undergo, usually following MYOCARDIAL INFARCTION. It comprises expansion of the infarct and dilatation of the healthy ventricle segments. While most prevalent in the left ventricle, it can also occur in the right ventricle.
A disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. The decreased blood flow may be due to narrowing of the coronary arteries (CORONARY ARTERY DISEASE), to obstruction by a thrombus (CORONARY THROMBOSIS), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. Severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (MYOCARDIAL INFARCTION).
The hemodynamic and electrophysiological action of the right HEART VENTRICLE.
Fluid accumulation within the PERICARDIUM. Serous effusions are associated with pericardial diseases. Hemopericardium is associated with trauma. Lipid-containing effusion (chylopericardium) results from leakage of THORACIC DUCT. Severe cases can lead to CARDIAC TAMPONADE.
A condition in which the RIGHT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE or MYOCARDIAL INFARCTION, and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the right ventricular wall.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
Surgical insertion of synthetic material to repair injured or diseased heart valves.
A form of CARDIAC MUSCLE disease, characterized by left and/or right ventricular hypertrophy (HYPERTROPHY, LEFT VENTRICULAR; HYPERTROPHY, RIGHT VENTRICULAR), frequent asymmetrical involvement of the HEART SEPTUM, and normal or reduced left ventricular volume. Risk factors include HYPERTENSION; AORTIC STENOSIS; and gene MUTATION; (FAMILIAL HYPERTROPHIC CARDIOMYOPATHY).
Heart sounds caused by vibrations resulting from the flow of blood through the heart. Heart murmurs can be examined by HEART AUSCULTATION, and analyzed by their intensity (6 grades), duration, timing (systolic, diastolic, or continuous), location, transmission, and quality (musical, vibratory, blowing, etc).
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow.
Developmental abnormalities in any portion of the VENTRICULAR SEPTUM resulting in abnormal communications between the two lower chambers of the heart. Classification of ventricular septal defects is based on location of the communication, such as perimembranous, inlet, outlet (infundibular), central muscular, marginal muscular, or apical muscular defect.
A benign neoplasm derived from connective tissue, consisting chiefly of polyhedral and stellate cells that are loosely embedded in a soft mucoid matrix, thereby resembling primitive mesenchymal tissue. It occurs frequently intramuscularly where it may be mistaken for a sarcoma. It appears also in the jaws and the skin. (From Stedman, 25th ed)
A form of CARDIAC MUSCLE disease that is characterized by ventricular dilation, VENTRICULAR DYSFUNCTION, and HEART FAILURE. Risk factors include SMOKING; ALCOHOL DRINKING; HYPERTENSION; INFECTION; PREGNANCY; and mutations in the LMNA gene encoding LAMIN TYPE A, a NUCLEAR LAMINA protein.
Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.
A localized bulging or dilatation in the muscle wall of a heart (MYOCARDIUM), usually in the LEFT VENTRICLE. Blood-filled aneurysms are dangerous because they may burst. Fibrous aneurysms interfere with the heart function through the loss of contractility. True aneurysm is bound by the vessel wall or cardiac wall. False aneurysms are HEMATOMA caused by myocardial rupture.
Surgery performed on the heart.
Ear-shaped appendage of either atrium of the heart. (Dorland, 28th ed)
Liquid perfluorinated carbon compounds which may or may not contain a hetero atom such as nitrogen, oxygen or sulfur, but do not contain another halogen or hydrogen atom. This concept includes fluorocarbon emulsions and fluorocarbon blood substitutes.
Examinations used to diagnose and treat heart conditions.
The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.
Inflammation of the inner lining of the heart (ENDOCARDIUM), the continuous membrane lining the four chambers and HEART VALVES. It is often caused by microorganisms including bacteria, viruses, fungi, and rickettsiae. Left untreated, endocarditis can damage heart valves and become life-threatening.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
Elements of limited time intervals, contributing to particular results or situations.
A condition in which the FORAMEN OVALE in the ATRIAL SEPTUM fails to close shortly after birth. This results in abnormal communications between the two upper chambers of the heart. An isolated patent ovale foramen without other structural heart defects is usually of no hemodynamic significance.
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Formation and development of a thrombus or blood clot in the blood vessel.
Prolonged dysfunction of the myocardium after a brief episode of severe ischemia, with gradual return of contractile activity.
A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
A condition in which HEART VENTRICLES exhibit impaired function.
Graphic registration of the heart sounds picked up as vibrations and transformed by a piezoelectric crystal microphone into a varying electrical output according to the stresses imposed by the sound waves. The electrical output is amplified by a stethograph amplifier and recorded by a device incorporated into the electrocardiograph or by a multichannel recording machine.
A PEPTIDE that is secreted by the BRAIN and the HEART ATRIA, stored mainly in cardiac ventricular MYOCARDIUM. It can cause NATRIURESIS; DIURESIS; VASODILATION; and inhibits secretion of RENIN and ALDOSTERONE. It improves heart function. It contains 32 AMINO ACIDS.
The tendinous cords that connect each cusp of the two atrioventricular HEART VALVES to appropriate PAPILLARY MUSCLES in the HEART VENTRICLES, preventing the valves from reversing themselves when the ventricles contract.
The span of viability of a tissue or an organ.
Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.
Inflammation of the ENDOCARDIUM caused by BACTERIA that entered the bloodstream. The strains of bacteria vary with predisposing factors, such as CONGENITAL HEART DEFECTS; HEART VALVE DISEASES; HEART VALVE PROSTHESIS IMPLANTATION; or intravenous drug use.
Patient care procedures performed during the operation that are ancillary to the actual surgery. It includes monitoring, fluid therapy, medication, transfusion, anesthesia, radiography, and laboratory tests.
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
The hemodynamic and electrophysiological action of the HEART VENTRICLES.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
Motion pictures of the passage of contrast medium through blood vessels.
The blood pressure as recorded after wedging a CATHETER in a small PULMONARY ARTERY; believed to reflect the PRESSURE in the pulmonary CAPILLARIES.
Compression of the heart by accumulated fluid (PERICARDIAL EFFUSION) or blood (HEMOPERICARDIUM) in the PERICARDIUM surrounding the heart. The affected cardiac functions and CARDIAC OUTPUT can range from minimal to total hemodynamic collapse.
Flaps of tissue that prevent regurgitation of BLOOD from the HEART VENTRICLES to the HEART ATRIA or from the PULMONARY ARTERIES or AORTA to the ventricles.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
The constant checking on the state or condition of a patient during the course of a surgical operation (e.g., checking of vital signs).
The pressure within a CARDIAC VENTRICLE. Ventricular pressure waveforms can be measured in the beating heart by catheterization or estimated using imaging techniques (e.g., DOPPLER ECHOCARDIOGRAPHY). The information is useful in evaluating the function of the MYOCARDIUM; CARDIAC VALVES; and PERICARDIUM, particularly with simultaneous measurement of other (e.g., aortic or atrial) pressures.
Blocking of the PULMONARY ARTERY or one of its branches by an EMBOLUS.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
Occlusion of the outflow tract in either the LEFT VENTRICLE or the RIGHT VENTRICLE of the heart. This may result from CONGENITAL HEART DEFECTS, predisposing heart diseases, complications of surgery, or HEART NEOPLASMS.
Pathological processes involving any part of the AORTA.
A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo MRI sequence with retrospective ECG-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualized.
The muscular membranous segment between the PHARYNX and the STOMACH in the UPPER GASTROINTESTINAL TRACT.
Cardiac manifestation of systemic rheumatological conditions, such as RHEUMATIC FEVER. Rheumatic heart disease can involve any part the heart, most often the HEART VALVES and the ENDOCARDIUM.
A versatile contrast medium used for DIAGNOSTIC X-RAY RADIOLOGY.
Abnormalities in any part of the HEART SEPTUM resulting in abnormal communication between the left and the right chambers of the heart. The abnormal blood flow inside the heart may be caused by defects in the ATRIAL SEPTUM, the VENTRICULAR SEPTUM, or both.
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
General or unspecified injuries to the heart.
A valve situated at the entrance to the pulmonary trunk from the right ventricle.
The hemodynamic and electrophysiological action of the RIGHT ATRIUM.
Sulfur hexafluoride. An inert gas used mainly as a test gas in respiratory physiology. Other uses include its injection in vitreoretinal surgery to restore the vitreous chamber and as a tracer in monitoring the dispersion and deposition of air pollutants.
The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)
The veins and arteries of the HEART.
Placement of a balloon-tipped catheter into the pulmonary artery through the antecubital, subclavian, and sometimes the femoral vein. It is used to measure pulmonary artery pressure and pulmonary artery wedge pressure which reflects left atrial pressure and left ventricular end-diastolic pressure. The catheter is threaded into the right atrium, the balloon is inflated and the catheter follows the blood flow through the tricuspid valve into the right ventricle and out into the pulmonary artery.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
Regulation of the rate of contraction of the heart muscles by an artificial pacemaker.
Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.
A technetium imaging agent used to reveal blood-starved cardiac tissue during a heart attack.
Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES.
A graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli.
Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.
A combination of congenital heart defects consisting of four key features including VENTRICULAR SEPTAL DEFECTS; PULMONARY STENOSIS; RIGHT VENTRICULAR HYPERTROPHY; and a dextro-positioned AORTA. In this condition, blood from both ventricles (oxygen-rich and oxygen-poor) is pumped into the body often causing CYANOSIS.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Radiography of the heart and great vessels after injection of a contrast medium.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
A CATHETER-delivered implant used for closing abnormal holes in the cardiovascular system, especially HEART SEPTAL DEFECTS; or passageways intentionally made during cardiovascular surgical procedures.
Pathophysiological conditions of the FETUS in the UTERUS. Some fetal diseases may be treated with FETAL THERAPIES.
Motion picture study of successive images appearing on a fluoroscopic screen.
A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.
The dilatation of the aortic wall behind each of the cusps of the aortic valve.
A congenital heart defect characterized by the persistent opening of fetal DUCTUS ARTERIOSUS that connects the PULMONARY ARTERY to the descending aorta (AORTA, DESCENDING) allowing unoxygenated blood to bypass the lung and flow to the PLACENTA. Normally, the ductus is closed shortly after birth.
An abnormal balloon- or sac-like dilatation in the wall of AORTA.
The condition of an anatomical structure's being dilated beyond normal dimensions.
The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.
Imaging of a ventricle of the heart after the injection of a radioactive contrast medium. The technique is less invasive than cardiac catheterization and is used to assess ventricular function.
Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.
Unstable isotopes of thallium that decay or disintegrate emitting radiation. Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes.
A malformation of the heart in which the embryonic common PULMONARY VEIN was not incorporated into the LEFT ATRIUM leaving behind a perforated fibromuscular membrane bisecting the left atrium, a three-atrium heart. The opening between the two left atrium sections determines the degree of obstruction to pulmonary venous return, pulmonary venous and pulmonary arterial hypertension.
Pressure, burning, or numbness in the chest.
A benign tumor of fibrous or fully developed connective tissue.
A congenital cardiovascular malformation in which the AORTA arises entirely from the RIGHT VENTRICLE, and the PULMONARY ARTERY arises from the LEFT VENTRICLE. Consequently, the pulmonary and the systemic circulations are parallel and not sequential, so that the venous return from the peripheral circulation is re-circulated by the right ventricle via aorta to the systemic circulation without being oxygenated in the lungs. This is a potentially lethal form of heart disease in newborns and infants.
The study of the heart, its physiology, and its functions.
Blockage of an artery due to passage of a clot (THROMBUS) from a systemic vein to a systemic artery without its passing through the lung which acts as a filter to remove blood clots from entering the arterial circulation. Paradoxical embolism occurs when there is a defect that allows a clot to cross directly from the right to the left side of the heart as in the cases of ATRIAL SEPTAL DEFECTS or open FORAMEN OVALE. Once in the arterial circulation, a clot can travel to the brain, block an artery, and cause a STROKE.
A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.
Disease-related laceration or tearing of tissues of the heart, including the free-wall MYOCARDIUM; HEART SEPTUM; PAPILLARY MUSCLES; CHORDAE TENDINEAE; and any of the HEART VALVES. Pathological rupture usually results from myocardial infarction (HEART RUPTURE, POST-INFARCTION).
Drugs used to cause dilation of the blood vessels.
The thin membrane-like muscular structure separating the right and the left upper chambers (HEART ATRIA) of a heart.
Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.
Heart failure caused by abnormal myocardial relaxation during DIASTOLE leading to defective cardiac filling.
Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.
The restoration of blood supply to the myocardium. (From Dorland, 28th ed)
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
A twisting deformation of a solid body about an axis. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The period during a surgical operation.
A type of heart valve surgery that involves the repair, replacement, or reconstruction of the annulus of the MITRAL VALVE. It includes shortening the circumference of the annulus to improve valve closing capacity and reinforcing the annulus as a step in more complex valve repairs.
The innermost layer of the heart, comprised of endothelial cells.
Small encapsulated gas bubbles (diameters of micrometers) that can be used as CONTRAST MEDIA, and in other diagnostic and therapeutic applications. Upon exposure to sufficiently intense ultrasound, microbubbles will cavitate, rupture, disappear, release gas content. Such characteristics of the microbubbles can be used to enhance diagnostic tests, dissolve blood clots, and deliver drugs or genes for therapy.
Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
The muscular structure separating the right and the left lower chambers (HEART VENTRICLES) of the heart. The ventricular septum consists of a very small membranous portion just beneath the AORTIC VALVE, and a large thick muscular portion consisting of three sections including the inlet septum, the trabecular septum, and the outlet septum.
The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. It is used to diagnose heart, liver, lung, and other diseases and to measure the function of those organs, except renography, for which RADIOISOTOPE RENOGRAPHY is available.
Systems composed of a computer or computers, peripheral equipment, such as disks, printers, and terminals, and telecommunications capabilities.
An infant during the first month after birth.
Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
Inflammation of the PERICARDIUM that is characterized by the fibrous scarring and adhesion of both serous layers, the VISCERAL PERICARDIUM and the PARIETAL PERICARDIUM leading to the loss of pericardial cavity. The thickened pericardium severely restricts cardiac filling. Clinical signs include FATIGUE, muscle wasting, and WEIGHT LOSS.
Malformations of CORONARY VESSELS, either arteries or veins. Included are anomalous origins of coronary arteries; ARTERIOVENOUS FISTULA; CORONARY ANEURYSM; MYOCARDIAL BRIDGING; and others.
Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating.
A transient left ventricular apical dysfunction or ballooning accompanied by electrocardiographic (ECG) T wave inversions. This abnormality is associated with high levels of CATECHOLAMINES, either administered or endogenously secreted from a tumor or during extreme stress.
Generally, restoration of blood supply to heart tissue which is ischemic due to decrease in normal blood supply. The decrease may result from any source including atherosclerotic obstruction, narrowing of the artery, or surgical clamping. Reperfusion can be induced to treat ischemia. Methods include chemical dissolution of an occluding thrombus, administration of vasodilator drugs, angioplasty, catheterization, and artery bypass graft surgery. However, it is thought that reperfusion can itself further damage the ischemic tissue, causing MYOCARDIAL REPERFUSION INJURY.
A birth defect characterized by the narrowing of the AORTA that can be of varying degree and at any point from the transverse arch to the iliac bifurcation. Aortic coarctation causes arterial HYPERTENSION before the point of narrowing and arterial HYPOTENSION beyond the narrowed portion.
Backflow of blood from the PULMONARY ARTERY into the RIGHT VENTRICLE due to imperfect closure of the PULMONARY VALVE.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
The main trunk of the systemic arteries.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
Radionuclide ventriculography where scintigraphic data is acquired during repeated cardiac cycles at specific times in the cycle, using an electrocardiographic synchronizer or gating device. Analysis of right ventricular function is difficult with this technique; that is best evaluated by first-pass ventriculography (VENTRICULOGRAPHY, FIRST-PASS).
Narrowing or constriction of a coronary artery.
The pathologic narrowing of the orifice of the PULMONARY VALVE. This lesion restricts blood outflow from the RIGHT VENTRICLE to the PULMONARY ARTERY. When the trileaflet valve is fused into an imperforate membrane, the blockage is complete.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
Difficult or labored breathing.
Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.
Measurement of blood flow based on induction at one point of the circulation of a known change in the intravascular heat content of flowing blood and detection of the resultant change in temperature at a point downstream.
Care given during the period prior to undergoing surgery when psychological and physical preparations are made according to the special needs of the individual patient. This period spans the time between admission to the hospital to the time the surgery begins. (From Dictionary of Health Services Management, 2d ed)
The circulation of the BLOOD through the LUNGS.
The venous trunk which returns blood from the head, neck, upper extremities and chest.
Act of listening for sounds within the heart.
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
Abnormal communication most commonly seen between two internal organs, or between an internal organ and the surface of the body.

Cardiac sympathetic activity estimated by 123I-MIBG myocardial imaging in patients with dilated cardiomyopathy after beta-blocker or angiotensin-converting enzyme inhibitor therapy. (1/9635)

Impaired cardiac sympathetic activity can be evaluated by 123I-metaiodobenzylguanidine (MIBG) imaging. METHODS: We studied the significance of MIBG imaging for 24 patients (age 58+/-12 y) with dilated cardiomyopathy (DCM). We compared 12 patients (group A) treated with metoprolol (dose from 30-60 mg/d) with 12 patients treated with angiotensin-converting enzyme (ACE) inhibitors. Patients were studied before treatment, after 5 mo of treatment (only in group A) and after 1 y of treatment. Cardiac MIBG uptake was assessed as the heart-to-mediastinum activity ratio (H/M) and total defect score (TDS) from anterior planar and SPECT MIBG images, which were acquired in 4 h after tracer injection. New York Heart Association (NYHA) class and left ventricular ejection fraction (LVEF) calculated by echocardiography were also assessed. RESULTS: TDS decreased in both groups (in group A, from 30+/-7 through 23+/-9 to 18+/-10; P < 0.01, in group B, from 30+/-6 to 24+/-8; P < 0.01) and H/M was increased in both groups (in group A, from 1.87+/-0.31 through 2.03+/-0.28 to 2.14+/-0.29; P < 0.01, in group B, from 1.82+/-0.28 to 1.94+/-0.26; P < 0.05). But TDS and H/M were more improved in group A than in group B (P < 0.05). LVEF was significantly increased in only group A (from 38+/-6 through 43+/-8 to 49%+/-9%; P < 0.01). NYHA improved in both groups (in group A, from mean 2.5 through 2.1 to 1.8; P < 0.01, in group B, from mean 2.6 to 2.1; P < 0.05) but was more improved in group A than in group B (P < 0.05). CONCLUSION: Cardiac function, symptom and cardiac sympathetic activity evaluated by MIBG images improved after the beta-blocker therapy more than with the treatment that used ACE inhibitors.  (+info)

Sympathetic nerve alterations assessed with 123I-MIBG in the failing human heart. (2/9635)

Norepinephrine (NE) reuptake function is impaired in heart failure and this may participate in myocyte hyperstimulation by the neurotransmitter. This alteration can be assessed by 123I-metaiodobenzylguanidine (MIBG) scintigraphy. METHODS: To determine whether the impairment of neuronal NE reuptake was reversible after metoprolol therapy, we studied 18 patients (43+/-7 y) with idiopathic dilated cardiomyopathy who were stabilized at least for 3 mo with captopril and diuretics. Patients underwent, before and after 6 mo of therapy with metoprolol, measurements of radionuclide left ventricular ejection fraction (LVEF), maximal oxygen consumption and plasma NE concentration. The cardiac adrenergic innervation function was scintigraphically assessed with MIBG uptake and release measurements on the planar images obtained 20 min and 4 h after tracer injection. To evaluate whether metoprolol had a direct interaction with cardiac MIBG uptake and release, six normal subjects were studied before and after a 1-mo metoprolol intake. RESULTS: In controls, neither cardiac MIBG uptake and release nor circulating NE concentration changed after the 1-mo metoprolol intake. Conversely, after a 6-mo therapy with metoprolol, patients showed increased cardiac MIBG uptake (129%+/-10% versus 138%+/-17%; P = 0.009), unchanged cardiac MIBG release and decreased plasma NE concentration (0.930+/-412 versus 0.721+/-0.370 ng/mL; P = 0.02). In parallel, patients showed improved New York Heart Association class (2.44+/-0.51 versus 2.05+/-0.23; P = 0.004) and increased LVEF (20%+/-8% versus 27%+/-8%; P = 0.0005), whereas maximal oxygen uptake remained unchanged. CONCLUSION: Thus, a parallel improvement of myocardial NE reuptake and of hemodynamics was observed after a 6-mo metoprolol therapy, suggesting that such agents may be beneficial in heart failure by directly protecting the myocardium against excessive NE stimulation.  (+info)

Effect of coronary occlusion on left ventricular function with and without collateral supply during beating heart coronary artery surgery. (3/9635)

OBJECTIVE: To study the effects of coronary occlusion and collateral supply on left ventricular (LV) function during beating heart coronary artery surgery. DESIGN: Prospective intraoperative study, performed at baseline, during wall stabilisation, coronary artery occlusion, and 2 and 10 minutes after reperfusion. Transoesophageal M mode echocardiograms, simultaneous high fidelity LV pressure, and thermodilution cardiac output were measured. LV anterior wall thickening, thinning velocities, thickening fraction, regional work, and power production were derived. Asynchrony during the isovolumic periods was quantified as cycle efficiency. SETTING: Tertiary referral cardiac centre. PATIENTS: 14 patients with stable angina, mean (SD) age 62 (7) years, undergoing left anterior descending artery grafting using the "Octopus" device. RESULTS: Collaterals were absent in nine patients and present in five. Epicardial stabilisation did not affect LV function. Results are expressed as mean (SD). Coronary occlusion (15.6 (2) minutes) depressed anterior wall thickening (1.4 (0.6) v 2.6 (0.6) cm/s) and thinning velocities (1.4 (0.5) v 3.0 (0.6) cm/s), regional work (2.2 (0.8) v 4.6 (0.6) mJ/cm2), and power (21 (4) v 33 (5) mW/cm2) in patients without collaterals (p < 0.05 for all), but only wall thinning (3.5 (0.5) v 4.8 (0.5) cm/s, p < 0.05) in patients with collaterals. All returned to baseline within 10 minutes of reperfusion. Cycle efficiency and regional work were impaired at baseline and fell during occlusion, regardless of collaterals. Within 10 minutes of reperfusion both had increased above baseline. CONCLUSIONS: Coronary occlusion for up to 15 minutes during beating heart coronary artery surgery depressed standard measurements of systolic and diastolic anterior wall function in patients without collaterals, but only those of diastolic function in patients with collaterals. Regional synchrony decreased in both groups. All disturbances regressed within 10 minutes of reperfusion.  (+info)

Peri-operative changes in echocardiographic measurements and plasma atrial and brain natriuretic peptide concentrations in 3 dogs with patent ductus arteriosus. (4/9635)

Peri-operative changes in echocardiographic measurements and plasma levels of atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) were investigated for 1 month in 3 dogs with patent ductus arteriosus (PDA). Post-operative left ventricular end-diastolic dimention and fractional shortening decreased in all cases. Pre-operatively increased plasma ANP concentrations reduced dramatically after the operation. Peri-operative changes in plasma BNP levels had slightly S-shaped curves in all cases. These observations suggest that post-operative responsiveness of ANP and cardiac function are rapid in comparison with cardiac morphological changes, and BNP has a different pathophysiological significance from ANP in dogs with PDA.  (+info)

Hemodialysis with high-calcium dialysate impairs cardiac relaxation. (5/9635)

BACKGROUND: During hemodialysis (HD), serum ionized calcium is directly related to the dialysate calcium concentration. We have recently shown an acute induction of hypercalcemia to impair left ventricular (LV) relaxation. In the current study we sought to establish whether changes in serum Ca++ also affect LV function during HD. METHODS: We echocardiographically examined the LV relaxation and systolic function of 12 patients with end-stage renal disease before and after three HD treatments with dialysate Ca++ concentrations of 1.25 mmol/liter (dCa++1.25), 1.5 mmol/liter (dCa++1.50), and 1.75 mmol/liter (dCa++1.75), respectively. Age- and sex-matched healthy controls were also examined echocardiographically. RESULTS: The LV posterior wall thickness and the interventricular septum thickness, and the LV end-diastolic dimension and the end-systolic dimensions were significantly greater in the patients when compared with the controls, and the LV fractional shortening, the ratio of peak early to peak late diastolic velocities (E/Amax), and the isovolumic relaxation time (IVRT) showed impairment of LV relaxation and systolic function in the patients. Serum ionized calcium increased significantly during the dCa++1.5 HD (1.24 +/- 0.10 vs. 1.34 +/- 0.06 mmol/liter, P = 0. 004) and dCa++1.75 HD (1.19 +/- 0.10 vs. 1.47 +/- 0.06 mmol/liter, P = 0.002), and plasma intact parathyroid hormone decreased significantly during the dCa++1.75 HD (medians 8.2 vs. 2.7 pmol/liter, P = 0.002). LV systolic function was not altered during any of the treatments. The changes in E/Amax and IVRT suggested impairment of relaxation during all sessions, but only during the dCa++1.75 HD was the impairment statistically significant (E/Amax 1. 153 +/- 0.437 vs. 0.943 +/- 0.352, P < 0.05; IVRT 147 +/- 29 vs. 175 +/- 50 msecond, P < 0.05). CONCLUSION: HD with high-calcium (dCa++1. 75 mmol/liter) dialysate impairs LV relaxation when compared with lower calcium dialysate (dCa++1.25 and dCa++1.5 mmol/liter) treatments.  (+info)

Studies on structural changes of the carotid arteries and the heart in asymptomatic renal transplant recipients. (6/9635)

BACKGROUND: The present study was designed to characterize early structural changes of large arteries in renal transplant recipients with no clinical evidence of cardiovascular disease and normal blood pressure values, and to analyse the relationship between arterial alterations and those of the heart. METHODS: Intima media thickness and atherosclerotic plaques of the carotid arteries as well as left ventricular geometry and function were examined in 35 asymtomatic renal transplant recipients and 29 age- and sex-matched healthy controls by high resolution B-mode ultrasound and by echocardiography. RESULTS: Intima-media thickness of the carotid arteries was significantly higher in renal transplant recipients (1.21+/-0.08 mm) than in healthy controls (0.74+/-0.04 mm) (P<0.001). Atherosclerotic plaques were found in the majority of renal transplant recipients (71% vs 14% in healthy controls, P<0.001). Left ventricular mass index was significantly increased in the group of renal transplant recipients (264+/-13 g, 146+/-7 g/m2) when compared with healthy controls (155+/-8 g, 83+/-4 g/m2) (P<0.001). Multiple regression analysis in renal transplant recipients showed that intima media thickness of the carotid arteries was significantly related to left ventricular mass index (P<0.02), but not to age, blood pressure, body mass index, serum creatinine, cholesterol and lipoprotein (a) levels. In the group of healthy controls, intima-media thickness of the carotid artery was related to age (P<0.002), but not to left ventricular mass index or the other independent variables. CONCLUSIONS: The present study documents pronounced intima-media thickening in asymptomatic renal transplant recipients. Atherosclerotic lesions are present in most renal transplant recipients with no clinical evidence of cardiovascular disease. We observed a parallelism between arterial wall thickening and left ventricular hypertrophy, although blood pressure levels were normal during haemodialysis therapy and after renal transplantation.  (+info)

Regulation of myocardial blood flow by oxygen consumption is maintained in the failing heart during exercise. (7/9635)

The hemodynamic abnormalities and neurohumoral activation that accompany congestive heart failure (CHF) might be expected to impair the increase in coronary blood flow that occurs during exercise. This study was performed to determine the effects of CHF on myocardial oxygen consumption and coronary blood flow during exercise. Coronary blood flow was measured in chronically instrumented dogs at rest, during 2 stages of graded treadmill exercise under control conditions (n=10), and after the development of CHF produced by 3 weeks of rapid ventricular pacing (n=9). In the normal dogs, coronary blood flow increased during exercise in proportion to the increase in the heart rate x the left ventricular systolic blood pressure product (RPP). After the development of CHF, resting myocardial blood flow was 25% lower than normal (P<0.05). Myocardial blood flow increased during the first stage of exercise, but then failed to increase further during the second stage of exercise despite an additional increase in the RPP. Myocardial oxygen consumption during exercise was significantly lower in animals with CHF and paralleled coronary flow. Despite the lower values for coronary blood flow in animals with CHF, there was no evidence for myocardial ischemia. Thus, even during the second level of exercise when coronary flow failed to increase, myocardial lactate consumption continued and coronary venous pH did not fall. In addition, the failure of coronary flow to increase as the exercise level was increased from stage 1 to stage 2 was not associated with a further increase in myocardial oxygen extraction. Thus, cardiac failure was associated with decreased myocardial oxygen consumption and failure of oxygen consumption to increase with an increase in the level of exercise. This abnormality did not appear to result from inadequate oxygen availability, but more likely represented a reduction of myocardial oxygen usage with a secondary decrease in metabolic coronary vasodilation.  (+info)

Increased renal resistive index in patients with essential hypertension: a marker of target organ damage. (8/9635)

BACKGROUND: Increased renal resistance detected by ultrasound (US) Doppler has been reported in severe essential hypertension (EH) and recently was shown to correlate with the degree of renal impairment in hypertensive patients with chronic renal failure. However, the pathophysiological significance of this finding is still controversial. METHODS: In a group of 211 untreated patients with EH, we evaluated renal resistive index (RI) by US Doppler of interlobar arteries and early signs of target organ damage (TOD). Albuminuria was measured as the albumin to creatinine ratio (ACR) in three non-consecutive first morning urine samples. Left ventricular mass was evaluated by M-B mode echocardiography, and carotid wall thickness (IMT) by high resolution US scan. RESULTS: RI was positively correlated with age (r=0.25, P=0.003) and systolic blood pressure (SBP) (r=0.2, P=0.02) and with signs of early TOD, namely ACR (r=0.22, P=0.01) and IMT (r=0.17, P<0.05), and inversely correlated with renal volume (r=-0.22, P=0.01) and diastolic blood pressure (r=-0.23, P=0.006). Multiple linear regression analysis demonstrated that age, gender, ACR and SBP independently influence RI and together account for approximately 20% of its variations (F=8.153, P<0.0001). When clinical data were analysed according to the degree of RI, the patients in the top quartile were found to be older (P<0.05) and with higher SBP (P<0.05) as well as early signs of TOD, namely increased ACR (P<0.002) and IMT (P<0.005 by ANOVA), despite similar body mass index, uric acid, fasting blood glucose, lipid profile and duration of hypertension. Furthermore, patients with higher RI showed a significantly higher prevalence of microalbuminuria (13 vs 12 vs 3 vs 33% chi2=11.72, P=0.008) and left ventricular hypertrophy (40 vs 43 vs 32 vs 60%, chi2=9.25, P<0.05). CONCLUSIONS: Increased RI is associated with early signs of TOD in EH and could be a marker of intrarenal atherosclerosis.  (+info)

OBJECTIVE: To determine to what extent inaccuracies in measuring the end diastolic diameter of the left ventricle, the interventricular septum, and the posterior wall, by M mode echocardiography influence the left ventricular mass calculated by the Devereuxs formula. DESIGN: Mathematical model. RESULTS: Relatively small measurement inaccuracies such as 5%, which are known to be inherent in the echocardiographic method, will result in changes of left ventricular mass in the range of 8% to 15%. This is equivalent to expected changes in left ventricular mass seen during treatment. CONCLUSIONS: The use of Devereuxs formula to calculate left ventricular mass is limited by measurement inaccuracies in individual patients.. ...
How is short-axis views of two-dimensional echocardiograms abbreviated? SA-2DE stands for short-axis views of two-dimensional echocardiograms. SA-2DE is defined as short-axis views of two-dimensional echocardiograms rarely.
TY - JOUR. T1 - Noninvasive visualization of the left main coronary artery by cross sectional echocardiography. AU - Weyman, A. E.. AU - Feigenbaum, Harvey. AU - Dillon, J. C.. AU - Johnston, K. W.. AU - Eggleton, R. C.. PY - 1976. Y1 - 1976. N2 - Real time cross sectional echocardiographic studies of the left main coronary artery (LMCA) were performed in 15 normal patients, 15 patients with angiographically proven coronary artery disease but normal left main coronary segments, three patients with greater than 75% obstruction of the left main coronary artery, and one patient with a large aneurysm of the left main coronary artery. In normal subjects the LMCA evaginates from the inferolateral wall of the aorta. The artery appears as two dominant parallel linear echoes separated by a clear space representing the lumen of the vessel. The LMCA courses beneath the right ventricular outflow tract and can generally be followed to its expected point of bifurcation. Confirmation that this structure was in ...
This investigation was designed to determine the role of echocardiography in the assessment of left ventricular function in patients with significant coronary arterial disease. Satisfactory echocardiograms were obtained in 43 patients with coronary arterial disease. The ventriculographic ejection fraction was determined by the area length method. The echocardiographic left ventricular end-diastolic dimension was increased to more than 5-4 cm in 17 patients. Fifteen of these patients had an ejection fraction of 0-45 or less. Three patients had a normal left ventricular end-diastolic dimension but an ejection fraction of less than 0-45. Twenty-three patients had an ejection fraction of more than 0-45 and a normal left ventricular end-diastolic dimension. The left ventricular end-diastolic dimension index was increased (greater than 3 cm/m2) in 15 patients, all of whom had ejection fraction of less than 0-45. Three patients had a normal left ventricular end-diastolic dimension index and an ejection ...
To test the feasibility of imaging the left main coronary artery (LMCA) noninvasively as a means of detecting left main coronary artery disease, we studied 73 patients who underwent cardiac catheterization and cross-sectional echocardiography. Fifty-two had a normal LMCA (controls) and 21 had significant obstruction (greater than or equal to 50% luminal reduction). The apical, tomographic, cross-sectional, phased-array, echocardiographic approach was used, and the LMCA was imaged in 52 of 73 patients (71%). In 34 of 36 controls (94%) the LMCA was correctly judged as having no luminal obstruction. In the other two, and asymmetric, high-intensity echo in one wall of the artery suggested atherosclerotic disease, but coronary angiography revealed no obstruction. In 12 of 16 patients (75%) in whom significant LMCA disease was imaged, obstruction was predicted by echocardiographic criteria of either luminal irregularity or an asymmetric, high-intensity echo in the arterial wall. This preliminary study ...
OBJECTIVE: To investigate the changes of left ventricular structure and function in patients with liver cirrhosis and their correlation with the model for end-stage liver disease (MELD) score. METHODS: A total of 89 cirrhotic patients admitted between June, 2012 and June, 2014 and 30 healthy control subjects were enrolled in the study. According to MELD score, the cirrhotic patients were divided into 3 groups with MELD scores ≤9, between 10 and 19, and ≥20. The parameters of the left ventricle in resting state were measured using Doppler echocardiography, including left ventricular end systolic diameter (LVESD), left ventricular end diastolic diameter (LVEDD), interventricular septal thickness (IVST), left ventricular posterior wall thickness (LVPWT), left atrial diameter (LAD), ejection fraction (LVEF), cardiac output (CO), mitral flow velocity, and E wave deceleration time (DT), and evaluated their relationship with MELD score ...
A method for generating a synthesis echocardiographic image comprises first obtaining, for a plurality of pathologically similar reference hearts, a reference echocardiographic image of each reference heart at end-systole and at end-diastole. Next, the coupled epicardial and endocardial borders are identified in each echocardiographic image. An epicardial/endocardial border pair is then modeled from the identified borders. The method then locates a plurality of predetermined features in the reference echocardiographic images. The predetermined features are then located in the subject echocardiographic image from the location of the predetermined features in the reference echocardiographic images. The modeled epicardial/endocardial border pair is then mapped onto the subject echocardiographic image relative to the location of the predetermined features in the subject echocardiographic image. The apparatus generally comprises an echocardiographic machine for obtaining the echocardiographic images that are
TY - JOUR. T1 - Impact of goal directed basic echocardiography on diagnostic and therapeutic management in an ICU of cardiac surgery. AU - Moreno, O.. AU - Ochagavía, A.. AU - Artigas, A.. AU - Barbadillo, S.. AU - Tomás, R.. AU - Bosque, M. D.. AU - Fortia, C.. AU - Baigorri, F.. PY - 2019/1/1. Y1 - 2019/1/1. N2 - © 2019 Elsevier España, S.L.U. y SEMICYUC Objective: Few studies have evaluated the impact in diagnosis and therapeutic management of basic transthoracic echocardiography in postoperated cardiac surgery. The aim of our study was to evaluate the impact of basic transthoracic echocardiography in the management of this kind of patients. Design: Over an 18-month period, we prospectively studied all patients admitted to a university hospital Intensive Care Unit following heart surgery. We evaluated clinically all of them to establish a diagnosis and an initial treatment. We performed basic transthoracic echocardiography for a diagnosis evaluation that was compared with clinical ...
Overall cardiac function assessment was assessed by tests (echocardiogram,cardiac catheterization (optional),electrocardiogram,B-type natriuretic peptide [BNP]), clinical symptoms (subjective symptoms) and the New York Heart Association (NYHA) cardiac functional classification.Overall assessment of cardiac function was assessed based on the evaluation items including interventricular septum thickness, left ventricular posterior wall thickness, left ventricular mass, clinical function tests and clinical symptoms. A subject was considered to be Improved: if Improved in 2 items or more, Unchanged: Improved in one item and unchanged in 2 items or unchanged in all 3 items, Aggravated: Aggravated in one item or more ...
Emergency echocardiography refers to the use of echocardiography in the assessment of patients with suspected cardiovascular disease requiring immediate diagnosis and treatment. The European Association of Cardiovascular Imaging (EACVI) has recently set standards for adequate education and training for the safe and efficient use of echocardiography in emergency cardiac care. The level of competence in echocardiography required for emergency cases is at least the same as for elective cases and competence requirements for emergency echocardiography are the same for cardiologists and non-cardiologists. The EACVI recognizes two levels of competence in emergency echocardiography: the independent operator level and the expert operator level. This chapter discusses general considerations as well as requirements and levels of competence regarding training for emergency echocardiography.
Hypertension is a major and correctable cardiovascular risk factor. The correct diagnosis of hypertension and precise assessment of cardiovascular risk are essential to give proper treatment in patients with hypertension. Although echocardiography is the second-line study in the evaluation of hypertensive patients, it gives many clues suggesting bad prognosis associated with hypertension, including increased left ventricular (LV) mass, decreased LV systolic function, impaired LV diastolic function, and increased left atrial size and decreased function. Along with conventional echocardiographic methods, tissue Doppler imaging, three-dimensional echocardiography, and strain echocardiography are newer echocardiographic modalities in the evaluation of hypertensive patients in the current echocardiographic laboratories. Understanding conventional and newer echocardiographic parameters is important in the diagnosis and assessment of cardiovascular risk in hypertensive patients.
Procedure of Fetal Echocardiography. The test is non-invasive, safe and usually takes about 30 minutes to be performed. There are no preparations that need to be done before the test and is very similar to a routine pregnancy ultrasound. Fetal echocardiography is done through the abdomen or the vagina; if done through the former, it is called abdominal echocardiography, while the latter is called transvaginal echocardiography.. In abdominal echocardiography, you will be required to lie down. Then a special lubricating gel will be applied on the bare belly which will enable the technician to use an ultrasound transducer to send and receive signals from the sound waves over the skin. The transducers sends sound waves through the body, which eco upon hitting the childs heart are reflected back to the transducer and are then converted into images on a screen. The transducer is moved all over the stomach to get complete images of the heart. In case of transvaginal echocardiography, a small probe is ...
The Echocardiography Department conducts over 2,000 studies annually. Including over 1500 Transthoracic Echocardiograms, 150 Dobutamine Stress Echocardiograms, 100 Treadmill Stress Echocardiograms, 200 Transesophageal Echocardiograms. Services provided include diagnostic M-Mode/2-Dimensional Echocardiograms, 3-dimensional Echocardiograms, Continuous Wave Doppler, Pulsed Wave Doppler, Color Flow Doppler, and Contrast Echocardiography.. Kern Medical is dedicated to quality. All practices conform to the guidelines for Diagnostic Echocardiography as prescribed by the American Heart Association, American College of Cardiology, and the American Society of Echocardiography. Our department is under the leadership of Dr. Justin Pearlman. Furthermore all of our cardiac sonographers are highly trained and supervised by our onsite physician.. ...
TY - JOUR. T1 - Recommendations for quantitation of the left ventricle by two-dimensional echocardiography. American Society of Echocardiography Committee on Standards, Subcommittee on Quantitation of Two-Dimensional Echocardiograms.. AU - Schiller, N. B.. AU - Shah, P. M.. AU - Crawford, M.. AU - DeMaria, A.. AU - Devereux, R.. AU - Feigenbaum, H.. AU - Gutgesell, H.. AU - Reichek, N.. AU - Sahn, David. AU - Schnittger, I.. PY - 1989/9. Y1 - 1989/9. N2 - We have presented recommendations for the optimum acquisition of quantitative two-dimensional data in the current echocardiographic environment. It is likely that advances in imaging may enhance or supplement these approaches. For example, three-dimensional reconstruction methods may greatly augment the accuracy of volume determination if they become more efficient. The development of three-dimensional methods will depend in turn on vastly improved transthoracic resolution similar to that now obtainable by transesophageal echocardiography. ...
Vol 22: A Comparison of Different Techniques of Two-Dimensional Speckle-Tracking Strain Measurements of Right Ventricular Systolic Function in Patients with Acute Pulmonary Embolism.. This article is from Journal of Cardiovascular Ultrasound, volume 22.AbstractBackground: Speckle-tracking echocardiograp. Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Since its release in April, 2000, Bonita Andersons first textbook, Echocardiography: The Normal Examination and Echocardiographic Measurements has proved to be a valuable learning tool for students, teachers of echocardiography and sonographers worldwide. Now in its third edition, it has been adopted by many schools as the primary text for courses in echocardiography.. After the release of the second edition of Echocardiography… Bonita turned her writing skills to the subject of cardiac pathology and almost three years after committing to the task, a new textbook, A Sonographers Guide to the Assessment Heart Disease was released in January, 2014. This new text has also been adopted by many as the perfect complement to Echocardiography… as it takes students to the next level of learning the art of echocardiography.. ...
Quantification of myocardial blood flow reserve in patients with CAD using real-time myocardial contrast echocardiography (RTMCE) has been demonstrated to further improve accuracy over the analysis of wall motion and qualitative analysis of myocardial perfusion.. Conventional stress echocardiography compares wall motion during rest and stress. The FDA has approved a contrast agent for use in patients with suboptimal echocardiograms, which accounts for up to 20% of resting echo studies. A suboptimal image is one in which at least two of six myocardial segments of the left ventricle cannot be visualized in the apical views. Contrast is used to opacify the LV chamber and to improve the delineation of the left ventricular endocardial border. Patient with suboptimal echoes include technically difficult patients, such as obese patients; patients undergoing mechanical ventilation; or patients with pulmonary hypertension.. Thomas R. Porter, MD, Chair of Cardiology at the University of Nebraska Medical ...
Currently, there is a paucity of investigations that have assessed the effects of RT on LV morphology and systolic function in healthy older individuals. We recently assessed the effects of 16 weeks of upper and lower extremity RT, in previously sedentary healthy older males (mean age: 68 years), on LV morphology, end-systolic meridional wall stress and LV systolic function (26). Resting two-dimensional echocardiograms were performed after 4, 8, 12 and 16 weeks of moderate (60% one repetition maximum, 1RM) to high (80% 1RM) intensity upper and lower extremity RT. The major finding of this investigation was that 16 weeks of RT was a sufficient stimulus to increase upper (+16%) and lower (+29%) extremity maximal muscular strength but was insufficient of a stimulus to alter LV posterior wall thickness, ventricular septal wall thickness, systolic or diastolic cavity dimensions, relative wall thickness and estimated LV mass (26). In addition, this form of training was not associated with an ...
Fifty consecutive patients undergoing aortic valve replacement for isolated aortic regurgitation were studied prospectively by echocardiography, electrocardiography and cardiac catheterization. Good quality echocardiograms were obtained in 49 of the 50 patients. Left ventricular (LV) dilatation was present in all 49 patients. LV systolic function, as assessed by echocardiographic percent fractional shortening, was normal in many patients but was moderately to severely reduced (less than 25%) in 14 patients (29%). Echocardiographic studies 6 months postoperatively revealed significant reductions in LV end-diastolic dimension (73.8 mm vs 58.7 mm; p less than 0.01), and serial echocardiographic studies early and late after operation revealed that the decrease in LV size had occurred by the time of the early study (8-22 days postoperatively), with little additional change thereafter. Operative deaths occurred in three of the 49 patients (6%). Eight of the 49 patients (16%) died of congestive heart ...
TY - CHAP. T1 - Introduction to echocardiography. AU - Lohr, Jamie L.. AU - Sivanandam, Shanthi. PY - 2005/12/1. Y1 - 2005/12/1. N2 - The use of ultrasound to provide noninvasive evaluation of cardiac structure and function was a revolutionary advancement in cardiac care in the late 20th century. Today, echocardiography allows for detailed serial examinations of: (1) heart development; (2) cardiac structure and function; and (3) changes in normal physiologic states and pathologic conditions. The goals of this chapter are to: (1) provide the reader with a brief overview of the types of echocardiography in clinical use today; (2) review the basic physical principles that underlie this clinical tool; and (3) demonstrate how echocardiography can be used to assess cardiac structure and function.. AB - The use of ultrasound to provide noninvasive evaluation of cardiac structure and function was a revolutionary advancement in cardiac care in the late 20th century. Today, echocardiography allows for ...
To investigate the relationship between the elasticity of the carotid artery and the LV (left ventricle) systolic function in patients with diabetic nephropathy (DN) by using two-dimensional speckle-tracking strain echocardiography (2D-STE). DN patients (n = 108) and control subjects (n = 112), all of whom underwent echocardiography and carotid ultrasound. Analysis of LV GLS (global longitudinal strain) from the apical two-chamber (2C), three-chamber (3C), and four-chamber (4C) views. Meanwhile, the circumferential strain (CS) of the carotid artery was obtained from the view of the short-axis right common carotid artery. The differences between the two groups were compared, and a correlation analysis between CS and GLS was performed. The 4CGLS, 2CGLS, 3CGLS, and CS of the DN group were significantly lower at significant levels in contrast to the control group (p | 0.05). There was a significantly positive correlation of CS with 4CGLS, 2CGLS, and 3CGLS in all subjects (r = 0.809, p = 0.000; r = 0.830, p
Background: There is conflicting information on the effects of oestrogen on the heart in women, especially those using postmenopausal hormone therapy. Whilst some studies reported a beneficial effect, others showed adverse outcomes. The interplay of lifestyle factors and type/timing of therapy remains to be clarified.. Aim: The aim of this study was to determine the effects of lifestyle and hormone therapy on heart function and structure in postmenopausal women.. Method: As part of a large longitudinal study of women randomly recruited from an urban population, the study assessed 410 suitable women by echocardiography in Year 1 and Year 5 of the study by two independent cardiologists.. Results: In lifestyle characteristics, the difference in age and body mass (as markers of cardiovascular risk) was in favour of never-users versus hormone therapy-users. Using an arbitrary cut-off ≥15% change for an effect, we found lifestyle factors had minimal effect on the two measured parameters - ejection ...
Echocardiography with its multiple modalities plays a central role in the evaluation of patients with known or suspected coronary artery disease, starting from the differential diagnosis of the patient presenting with acute chest pain. In the patient presenting with acute myocardial infarction (raised troponins) whether it is with ST-segment elevation or without, echocardiography is the first imaging modality used in order to ascertain the presence and extent of LV dysfunction and the presence of complications. In the absence of myocardial infarction (negative troponins), echocardiography will play an important diagnostic role in identifying the presence of reversible myocardial ischaemia. Stress echocardiography in many institutions is now the preferred stress modality associated with imaging as it is cost-effective and does not use ionizing radiation. Finally, echocardiography plays a pivotal role in the assessment of myocardial viability since the presence and extent of viable myocardium may ...
Non-invasiveness and instantaneous diagnostic capability are prominent features of the use of echocardiography in critical care. Sepsis and septic shock represent complex situations where early hemodynamic assessment and support are among the keys to therapeutic success. In this review, we discuss the range of applications of echocardiography in the management of the septic patient, and propose an echocardiography-based goal-oriented hemodynamic approach to septic shock. Echocardiography can play a key role in the critical septic patient management, by excluding cardiac causes for sepsis, and mostly by guiding hemodynamic management of those patients in whom sepsis reaches such a severity to jeopardize cardiovascular function. In recent years, there have been both increasing evidence and diffusion of the use of echocardiography as monitoring tool in the patients with hemodynamic compromise. Also thanks to echocardiography, the features of the well-known sepsis-related myocardial dysfunction have been
© 2014, Wiley Periodicals, Inc. Background Three-dimensional fusion echocardiography (3DFE) is a novel postprocessing approach that utilizes imaging data acquired from multiple 3D acquisitions. We assessed image quality, endocardial border definition, and cardiac wall motion in patients using 3DFE compared to standard 3D images (3D) and results obtained with contrast echocardiography (2DC). Methods Twenty-four patients (mean age 66.9 ± 13 years, 17 males, 7 females) undergoing 2DC had three, noncontrast, 3D apical volumes acquired at rest. Images were fused using an automated image fusion approach. Quality of the 3DFE was compared to both 3D and 2DC based on contrast-to-noise ratio (CNR) and endocardial border definition. We then compared clinical wall-motion score index (WMSI) calculated from 3DFE and 3D to those obtained from 2DC images. Results Fused 3D volumes had significantly improved CNR (8.92 ± 1.35 vs. 6.59 ± 1.19, P | 0.0005) and segmental image quality (2.42 ± 0.99 vs. 1.93 ± 1.18, P
TY - JOUR. T1 - Left ventricular global systolic function assessment by echocardiography. AU - Chengode, Suresh. PY - 2016/10/1. Y1 - 2016/10/1. N2 - The left ventricle, with its thickened myocardial walls, unlike the right ventricle has no measurable geometric shape. It has a conical apex and its function quantification, needs intensive, 2D, 3D and M mode transesophageal echocardiography, which is described in this review.. AB - The left ventricle, with its thickened myocardial walls, unlike the right ventricle has no measurable geometric shape. It has a conical apex and its function quantification, needs intensive, 2D, 3D and M mode transesophageal echocardiography, which is described in this review.. KW - Echocardiography. KW - Intraoperative or intensive care setting. KW - Left ventricular global systolic function. UR - http://www.scopus.com/inward/record.url?scp=84993953630&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=84993953630&partnerID=8YFLogxK. U2 - ...
TY - JOUR. T1 - Incremental cost-effectiveness of exercise echocardiography vs. SPECT imaging for the evaluation of stable chest pain. AU - Shaw, Leslee J.. AU - Marwick, Thomas H.. AU - Berman, Daniel S.. AU - Sawada, Stephen. AU - Heller, Gary V.. AU - Vasey, Charles. AU - Miller, D. Douglas. PY - 2006/10/1. Y1 - 2006/10/1. N2 - Aims: Technological advances in cardiac imaging have led to dramatic increases in test utilization and consumption of a growing proportion of cardiovascular healthcare costs. The opportunity costs of strategies favouring exercise echocardiography or SPECT imaging have been incompletely evaluated. Methods and results: We examined prognosis and cost-effectiveness of exercise echocardiography (n = 4884) vs. SPECT (n = 4637) imaging in stable, intermediate risk, chest pain patients. Ischaemia extent was defined as the number of vascular territories with echocardiographic wall motion or SPECT perfusion abnormalities. Cox proportional hazard models were employed to assess ...
The aim of this study was to: (1) compare the usefulness, in clinical practice, of different echocardiographic methods of left ventricular (LV) function determination in patients with a recent thrombolytic-treated acute myocardial infarction (AMI); (2) compare these measurements with the reference m …
The stepwise approach in evaluation of left ventricular (LV) diastolic function is essential in any patients with dyspnea on exertion or heart failure. Many of them have normal to near-normal ejection fractions (EFs). These subsets of patients are labeled as diastolic heart failure or heart failure with preserved EF. It is important to differentiate diastolic dysfunction from dyspnea of pulmonary origin for further management and future prognosis. LV filling pressures is usually synonymous with pulmonary capillary wedge pressure (PCWP), mean left atrial pressure (LAP), mean LV diastolic pressure, and LV end-diastolic pressure (LVEDP). PCWP on the other hand is also an indirect estimate of LV diastolic pressures. LVEDP is often elevated in early diastolic dysfunction because of a large atrial pressure wave, while mean PCWP and LAP remain normal. While mean PCWP and LAP increased during tachycardia and where there is increased LV afterload which is the basis for the diastolic stress test. It is ...
Bengaluru: Fortis Hospital, Bengaluru in collaboration with Philips India today launched an echocardiography training centre, focused to help doctors learn more about echocardiography.. After ECG, ultrasound based echocardiography is the second most widely used test for investigating heart diseases. With increasing incidents of heart diseases in India, echocardiography as an easily available and affordable test needs to be better utilized in various patient scenarios. Physicians are in need of such trainings to better manage their patients and to also upgrade their skills in the latest methods of TBC.. Fortis Hospitals through F.A.M.E (Fortis Academy of Medical Education) has always been at the forefront when it comes to academics and education. The echocardiography training centre, which focuses on cardiology and diagnostics is a demonstration of Fortis and Philips commitment to upskill the healthcare professionals.. This specialized learning and training centre co-supported by Philips India, ...
Hot Tip - Transitioning From the Parasternal to Apical Window: Gulfcoast Ultrasound Institute instructor Dennis Atherton, RDCS, RCS, RRT, FASE, demonstrates how to transition from the parasternal cardiac window to the apical window using your parasternal image to guide you. Learn how perform Transitioning From the Parasternal to Apical Window as well as many other tips and tricks in the Introduction to Adult Echocardiography course (July 17-21, 2017). Introduction to Adult Echocardiography course (July 17-21, 2017) is designed to provide a strong foundation to perform and/or interpret adult cardiac ultrasound examinations. The Introduction to Adult Echocardiography course is taught by leading echocardiography experts, and includes comprehensive lectures, interactive case studies using an audience response system, and extensive hands on scanning featuring a 3:1 hands-on ratio using live models for the most hands on scan time.. ...
TY - JOUR. T1 - Value and limitations of two-dimensional echocardiography in predicting myocardial infarct size. AU - Shen, Win Kuang. AU - Khandheria, Bijoy K.. AU - Edwards, William D.. AU - Oh, Jae K.. AU - Miller, Fletcher A.. AU - Naessens, James M.. AU - Tajik, A. Jamil. PY - 1991/11/1. Y1 - 1991/11/1. N2 - To investigate the quantitative relations between the severity of regional wall motion abnormalities and segmental infarct size and between the severity of overall left ventricular dysfunction and global infarct size, a clinicopathologic study was undertaken of 30 patients who had a 2-dimensional (2-D) echocardiogram within 7 days before death. The severity of regional wall motion abnormalities was graded for each segment with a 2-D echocardiographic 14-segment model. The severity of global left ventricular dysfunction was calculated as the mean of the visualized regional wall motion scores. On pathologic examination of autopsy specimens, segmental infarct size was estimated as a ...
The spectrum of anomalies in hearts having a univentricular atrioventricular (AV) connection was examined by two-dimensional echocardiography in 183 patients and the anatomic findings were compared with angiography. The mode of AV connection was found to be of three types: 1) double inletvia two A V valves; 2) singleinlet via one AV valve with absence of the other (left or right AV valve atresia); and 3) common inletvia a common AV valve. Identification of an accessory chamber by two-dimensional echocardiography was possible with 90% sensitivity, but it was limited compared with angiography in patients with severely hypoplastic anterior Chambers and pulmonary valve atresia. All patients with subaortic outlet foramen obstruction were detected. Great artery position and the presence of obstruction to pulmonary flow were correctly predicted in all but one patient. Two-dimensional echocardiography was superior to angiography for the detection of AV valve abnormalities which were present in 27% and ...
Intracardiac echocardiography (ICE) is an imaging technique that is becoming increasingly available as an alternative to transoesophageal echocardiography to guide percutaneous interventional procedures. The probe can be inserted under local anaesthesia and is principally used during closure of atrial septal abnormalities. The main advantages of ICE over transoesophageal echocardiography include the elimination of the need for general anaesthesia, clearer imaging, shorter procedure times and reduced radiation doses to the patient. Within this article we review some of the current applications of ICE and how to image from within the heart.. ...
Using the Vevo 2100 and ultrasound pulsed-wave (PW) Doppler imaging, Caralynn Wilczewski from Dr. Frank L Conlons lab has developed a reliable method for performing non-invasive in utero embryonic echocardiography on early gestation mouse embryos. Read more.
INTRODUCTION. Exercise echocardiography (EE) has advanced significantly from the diagnostic point of view, and several recent studies (most carried out at the same center) have shown that the extent of resting or exercise- induced ventricular dysfunction is a robust predictor of cardiac death and myocardial infarction.1-10. The purpose of this study was to investigate whether the number and location of diseased territories during the exercise peak, as well as the type of response to exercise (ischemia, necrosis or remote ischemia) influenced risk stratification more than clinical, stress test, and resting echocardiography variables in patients with known or suspected coronary artery disease (CAD). We also investigated whether EE supplemented resting echocardiography in patients with a history of acute myocardial infarction (AMI) as recorded in the medical history.. PATIENTS AND METHODS. Patients. We studied 2479 patients who had undergone treadmill EE at our institution during a 4.2-year period ...
Nardi F. Echocardiographic methods integrated in the context of multimodality imaging. Minerva Cardioangiol 2017;65:577-8. DOI: 10.23736/S0026-4725.17.04481-4 ...
Echocardiography is used to diagnose certain cardiovascular disease. In fact, it is one of the most widely used diagnostic tests for heart disease. It can provide a wealth of helpful information, including the size and shape of the heart, its pumping strength, and the location and extent of any damage to its tissues. It is especially useful for assessing diseases of the heart valves. It not only allows doctors to evaluate the heart valves, but it can detect abnormalities in the pattern of blood flow, such as the backward flow of blood through partly closed heart valves, known as regurgitation. By assessing the motion of the heart wall, echocardiography can help detect the presence and assess the severity of coronary artery disease, as well as help determine whether any chest pain is related to heart disease. Echocardiography can also help detect hypertrophic cardiomyopathy, in which the walls of the heart thicken in an attempt to compensate for heart muscle weakness. The biggest advantage to ...
This Echocardiography Course serves as an introduction to use of ultrasound imaging in the cardiac evaluation. The lab and didactic portions are correlated in the teaching of normal echocardiography anatomy, techniques, and instrumentation pertaining to heart study. Specific knowledge/skill transfer processes are accomplished with 2D imaging, MMode, and an introduction to Spectral & Color Flow. At NAUTC, the program is designed to provide the student/ participant with the skills and knowledge necessary to prepare the program graduate to apply for an entry‐level echocardiography job. A certificate is awarded to the student upon successful completion of all graduation requirements listed in the student catalog.. Topics. The following broad topics will be covered in Adult Echocardiography course but not limited to:. ...
Looking for online definition of cross-sectional echocardiography in the Medical Dictionary? cross-sectional echocardiography explanation free. What is cross-sectional echocardiography? Meaning of cross-sectional echocardiography medical term. What does cross-sectional echocardiography mean?
TY - JOUR. T1 - The Doppler myocardial performance index during low-dose dobutamine echocardiography predicts mortality and left ventricular dilation after a first acute myocardial infarction. AU - Nørager, Betina. AU - Husic, Mirza. AU - Møller, Jacob E.. AU - Pellikka, Patricia A.. AU - Appleton, Christopher P.. AU - Egstrup, Kenneth. PY - 2005/9. Y1 - 2005/9. N2 - Background: Myocardial viability can be detected by wall motion analysis during low-dose dobutamine echocardiography (LDDE) after acute myocardial infarction (AMI). However, wall motion analysis describes only left ventricular (LV) systolic reserve. The Doppler myocardial performance index (MPI) is a quantitative measure of combined LV systolic and diastolic function. We hypothesized that an increase (deterioration) in MPI during LDDE, reflecting reduced systolic and diastolic LV reserve, could provide prognostic information beyond conventional systolic wall motion analysis on mortality, morbidity, and LV remodeling after AMI. ...
TY - JOUR. T1 - Redundant mitral valve simulating an intracardiac mass on transesophageal echocardiography. AU - Willens, H. J.. AU - Chakko, S.. AU - Levy, R.. AU - Bauerlein, Eugene. AU - Kessler, K. M.. PY - 1994/1/1. Y1 - 1994/1/1. N2 - Cardiac ultrasound is a useful diagnostic modality for the evaluation of cardiac masses and tumors. However, normal cardiac structures and normal variants can mimic masses with both transthoracic echocardiography and transesophageal echocardiography. We report two patients in whom a redundant mitral leaflet simulated cardiac tumor attached to the mitral valve by transesophageal echocardiography.. AB - Cardiac ultrasound is a useful diagnostic modality for the evaluation of cardiac masses and tumors. However, normal cardiac structures and normal variants can mimic masses with both transthoracic echocardiography and transesophageal echocardiography. We report two patients in whom a redundant mitral leaflet simulated cardiac tumor attached to the mitral valve by ...
0070] Transthoracic Echocardiography in conscious mice was performed using Sequoia Acuson C256 (Malvern, Pa.) ultrasound machine, equipped with a frequency bandwidth of 15 MHz (Am J Physiol, 1999. 277(5 Pt 2): p. H1967-74; Cancer Res, 2003. 63(20): p. 6602-6). The two-dimensional (2-D) and M-mode echocardiogram were obtained in the parasternal short and long axis view of the left ventricle (LV) at the level of the papillary muscles and sweep speed of 200 mm/sec. Using the M-mode echocardiogram image, four parameters were measured: (i) left ventricular posterior wall thickness at end of diastole (LVPWD), (ii) interventricular septa) thickness at end of diastole (IVSD), (iii) left ventricle (LV) chamber diameter at end of diastole (LVEDD), and (iv) left ventricle chamber diameter at end of systole (LVESD). All measurements were performed according to the guidelines set by the American Echocardiography Society. For each mouse, three to five values for each measurement were obtained and averaged for ...
Background Right-heart-catheterization and transthoracic echocardiography are routine tests to measure pulmonary artery systolic pressure among lung transplantation candidates. Echocardiography may be as accurate as right-heart-catheterization, without the inherent risks of an invasive test. Methods We examined the correlation between pulmonary pressures estimated by echocardiography versus right-heart-catheterization among lung transplantation candidates and their correlation to measurements during lung transplantation. Our cohort included all lung transplantation candidates during 1997 through 2004 who initially underwent pulmonary pressure evaluation by right-heart-catheterization and echocardiography, as well as measurements during lung transplantation. Results Of the 106 candidates, evaluation by transthoracic echocardiography was possible in 79 (74.5%). Median pulmonary systolic pressures by right-heart-catheterization was 44.0 [33.2-50.0] mm Hg and by echocardiography 40.0 [32.5-51.5] mm ...
TY - JOUR. T1 - Electrocadiographic Scoring Helps Predict Left Ventricular Wall Motion Abnormality Commonly Observed after Subarachnoid Hemorrhage. AU - Sugimoto, Keiko. AU - Yamada, Akira. AU - Inamasu, Joji. AU - Hirose, Yuichi. AU - Takada, Kayoko. AU - Sugimoto, Kunihiko. AU - Tanaka, Risako. AU - Watanabe, Eiichi. AU - Ozaki, Yukio. PY - 2018/11/1. Y1 - 2018/11/1. N2 - Background: Cardiac wall motion abnormality (WMA) is a common complication in patients with subarachnoid hemorrhage (SAH) and is one determinant of their prognosis. The aim of this study was to examine whether the electrocardiography (ECG) findings at admission could predict WMA commonly observed after SAH. Materials and methods: We studied 161 SAH patients with SAH who were hospitalized in our institution between April 2007 and November 2010. We performed bedside 2-dimensional transthoracic echocardiography and 12-lead surface ECG within 24 hours of SAH onset. Each of the following ECG changes was scored as having 1 point: ...
Left ventricular (LV) volumes and ejection fraction (EF) are important predictors of cardiac morbidity and mortality. LV volumes provide valuable prognostic information which isparticularly useful in the selection of therapy or determination of the optimal time for surgery. Two-dimensional (2D) echocardiography is the most widely used non-invasive method forassessment of cardiac function, 2D echocardiography has however several limitations inmeasuring LV volumes and EF since the formulas for quantifications are based on geometricalassumptions. Three-dimensional (3D) echocardiography has been available for almost twodecades, although the use of this modality has not gained wide spread acceptance. 3D echocardiography can overcome the above mentioned limitation in LV volume and EF evaluation since it is not based on geometrical assumption. 3D echocardiography has been shownin several studies to be more accurate and reproducible with low inter- and intraobservervariability in comparison to 2D ...
Echocardiography is the method of choice to establish a diagnosis and determine a treatment plan for patients with noncompaction of ventricular myocardium (NVM). The 2-dimentional echocardiography, 3-dimentional echocardiography, color Doppler echocardiography and contrast-enhanced echocardiography are of critical importance for diagnosis and family screening of NVM.
In the standard precordial echocardiographic imaging planes, there is frequent dropout of atrial septal echoes in the region of the fossa ovalis that can be minimized by use of the subcostal imaging approach. The diagnostic sensitivity of this approach was reviewed in 154 patients (mean age 31 years, range 2 months to 74 years) with documented atrial septal defect in whom a satisfactory image of the atrial septum could be obtained.. Subcostal two-dimensional echocardiography successfully visualized 93 (89%) of the 105 ostium secundum atrial septal defects, all 32 (100%) ostium primum defects and 7 (44%) of the 16 sinus venosus defects. A defect was not visualized (false negative response) in 12 patients (11%) with an ostium secundum defect and in 9 patients (56%) with a sinus venosus defect. In three of the former and five of the latter, a two-dimensional echocardiographic contrast examination established the presence of the interatrial shunt. Twenty-four patients (16%) with clinical findings of ...
TY - JOUR. T1 - Diagnostic accuracy and role of intraoperative biplane transesophageal echocardiography in pediatric patients with left ventricle outflow tract lesions. AU - Singh, G. K.. AU - Shiota, T.. AU - Cobanoglu, A.. AU - Droukas, P.. AU - Rice, M. J.. AU - Sahn, D. J.. PY - 1998. Y1 - 1998. N2 - Objectives: To define the lesion-specific role of biplane transesophageal echocardiography in children with left ventricular outflow tract obstructive lesions, the diagnostic accuracy of transthoracic and transesophageal images were compared, and the impact of transesophageal echocardiography on perioperative management was evaluated. Background: The reported high postoperative recurrence of left ventricular outflow tract obstructive lesion can be due to its incomplete surgical relief. A full preoperative definition of the lesions would aid in better surgical outcome. The complexity and spectrum of such lesions provide opportunity to evaluate the role of a recently available biplane ...
TY - JOUR. T1 - Clinical and echocardiographic predictors of outcomes in patients with apical hypertrophic cardiomyopathy. AU - Moon, Jeonggeun. AU - Shim, Chi Young. AU - Ha, Jong Won. AU - Cho, In Jeong. AU - Kang, Min Kyung. AU - Yang, Woo In. AU - Jang, Yangsoo. AU - Chung, Namsik. AU - Cho, Seung Yun. PY - 2011/12/1. Y1 - 2011/12/1. N2 - Apical hypertrophic cardiomyopathy (HC) is considered to have a favorable prognosis, but recent observations have suggested less benign clinical courses. We investigated the outcomes in patients with apical HC and evaluated the predictors. All 454 patients with apical HC (316 men, age 61 ± 11 years) were recruited. Major cardiovascular events (MACE) were defined as unplanned hospitalization because of heart failure, stroke, or cardiovascular mortality. The patients were divided into 2 groups: group 1 with MACE and group 2 without MACE. During the follow-up period (43 ± 20 months), the all-cause mortality rate was 9% (39 of 454), and 110 patients (25%) had ...
Objectives: Therefore, our study objectives are: 1) Assessment of the frequency of myocardial dysfunction (segmental wall motion abnormalities, cardiac-specific enzyme elevations, and ECG changes) in patients with SAH. 2) Determination of predictive clinical variables for the occurrence of myocardial dysfunction following SAH. 3) Impact of myocardial dysfunction on neurological prognosis: death, secondary cerebral ischemia, hydrocephalus and rebleeding.. Methods: For this purpose serial echocardiograms and ECGs will be obtained and cardiac enzymes will be measured in 200-400 patients admitted to hospital with SAH in the four participating centers. The clinical variables that will be studied to predict cardiac dysfunction are: medical history, the CT-scan score, circulatory parameters, blood samples, medication, surgical intervention (coiling or clipping), and the neurological condition (Glasgow Coma Scale). The echocardiograms, ECGs and cardiac enzymes will be studied to determine if they have ...
Healthcare delivery is being transformed by COVID-19 to reduce transmission risk but continued delivery of routine clinical tests is essential. Stress echocardiography is one of the most widely used cardiac tests in the NHS. We assessed the impact of the first (W1) and second (W2) waves of the pandemic on ability to deliver stress echocardiography. Clinical echocardiography teams in 31 NHS hospitals participating in the EVAREST study were asked in July and November 2020 to complete a survey on the structure and delivery of stress echocardiography as well as impact on patients and staff. Results were compared to stress echocardiography activity in the same centre during January 2020. 24 and 19 NHS hospitals completed the survey in July and November, respectively. A 55% reduction in the number of studies performed was reported in W1, recovering to exceed pre-COVID rates in W2. The major change was in mode of stress delivery. 70% of sites stopped their exercise stress service in W1, compared to 19% in W2.
Adult critical care echocardiography (ACCE) accreditation is the product of years of successful collaboration between the British Society of Echocardiography and the Intensive Care Society, recognising the need for intensive care practitioners to be able to perform transthoracic echocardiograms to inform management of critically unwell patients. Following successful completion, accreditation is valid for five years. A bespoke training syllabus reflects the patient cohort and the clinical questions unique to critical care echocardiography, and seeks to empower bedside clinicians to use the diagnostic power of echocardiography in their acute assessments and day to day care.. The accreditation process includes 250 cases, an MCQ exam and successful completion of a practical exam. ACCE accredited echocardiographers are specifically trained in the assessment of volume status and cardiac output, integrating echo evaluation and outcomes with current levels of organ support, whilst covering the core ...
Is there a long-term predictive value of intraoperative low-dose dobutamine echocardiography in patients who have coronary artery bypass graft surgery with cardiopulmonary bypass?
Data from echocardiography provide a cornerstone in the management of heart failure. All imaging techniques can provide an ejection fraction, but the versatility of echocardiography makes it unique in the provision of volumes, diastolic function, right ventricular function, hemodynamics, and valvular regurgitation. The early detection of heart failure has been facilitated by the assessment of global longitudinal strain, which is also useful in later heart failure for the assessment of left ventricular synchrony. The use of echocardiography has been associated with favorable outcomes, probably on the basis of facilitation of appropriate therapy. This review examines the evidence provided by echocardiography and its application in specific settings. Although the guidelines emphasize that no single test satisfies all imaging requirements in heart failure, and other modalities can provide additional information about specific questions (especially tissue characterization), echocardiography is ...
Transthoracic echocardiography is a primary non-invasive modality for investigation of heart transplant recipients. It is a versatile tool which provides comprehensive information about cardiac structure and function. Echocardiographic examinations can be easily performed at the bedside and serially repeated without any patients discomfort. This review highlights the usefulness of Doppler echocardiography in the assessment of left ventricular and right ventricular systolic and diastolic function, of left ventricular mass, valvular heart disease, pulmonary arterial hypertension and pericardial effusion in heart transplant recipients. The main experiences performed by either standard Doppler echocardiography and new high-tech ultrasound technologies are summarised, pointing out advantages and limitations of the described techniques in diagnosing acute allograft rejection and cardiac graft vasculopathy. Despite the sustained efforts of echocardiographic technique in predicting the biopsy state,
Left ventricular systolic function does not correlate well with functional class in patients with dilated cardiomyopathy. To determine whether the correlation is better with Doppler indexes of left ventricular diastolic function, 34 patients with dilated cardiomyopathy (M-mode echocardiographic end-diastolic dimension greater than 60 mm, fractional shortening less than 25%, increased E point-septal separation) were studied. Patients were classified into two groups according to functional class. Group 1 consisted of 16 patients in New York Heart Association functional class I or II; group 2 included 18 patients in functional class III or IV. Left ventricular dimensions, fractional shortening, left ventricular mass, meridional end-systolic wall stress, peak early and late transmitral filling velocities and their ratio, isovolumetric relaxation period and time to peak filling rate were computed from pulsed wave Doppler and M-mode echocardiograms and calibrated carotid pulse tracings. Right heart ...
TY - JOUR. T1 - Using transesophageal echocardiography to manage critically ill patients. What role in hemodynamic instability, MI, embolic disease, trauma?. AU - Holmberg, Mark Jeffrey. AU - Mohiuddin, Syed M.. PY - 1995/4. Y1 - 1995/4. N2 - When transthoracic echocardiographic images are suboptimal, transesophageal echocardiography offers a new window for visualization of the heart and thoracic aorta. It can be performed at bedside in 15 to 20 minutes. Complications (emesis, hypoxemia, hypotension) are rare and easily reversed or averted by administration of naloxone or flumazenil. Indications include evaluation of hemodynamic instability, ventricular function, mitral regurgitation, ventricular septal defects, aneurysm, endocarditis, intracardiac sources of embolus, valve pathology, aortic dissection, intra-aortic debris, and trauma. Results can be analyzed immediately and used to guide further evaluation, medical therapy, or surgery.. AB - When transthoracic echocardiographic images are ...
Before antibiotics were discovered, infective endocarditis was almost uniformly fatal. Although the prognosis is now markedly improved, it remains a disease with considerable mortality and morbidity. Patients with abscesses are much less likely to be cured with medical therapy alone. Thus, the early detection of abscesses might be useful in leading to surgery before complications, such as congestive heart failure, develop. Transthoracic echocardiography is the standard method for diagnosing vegetations, but it is not very effective in diagnosing abscesses. Recently, transesophageal echocardiography has been documented to improve the diagnosis of vegetations. On the basis of this study, transesopha- geal echocardiography is also useful for diagnosing abscesses. Although the results of this study are acceptable on the basis of the sensitivity and specificity, the predictive values reported must be adjusted for local circumstances. As noted by the authors, the population studied was skewed. First, ...
Looking for online definition of sector echocardiography in the Medical Dictionary? sector echocardiography explanation free. What is sector echocardiography? Meaning of sector echocardiography medical term. What does sector echocardiography mean?
Three-dimensional echocardiography is the most recent fundamental advancement in echocardiography with a strong impact on almost all clinical and research applications of echocardiography.. After a very successful 1st edition, this book presents the fully revised 2nd edition. Accounting for the marked progress of real-time 3D echocardiography since the 1st edition it covers all clinically important aspects of this fascinating new technology, including a comprehensive explanation of its basic principles, practical aspects of clinical application, new recommendations in recent guidelines and detailed descriptions of specific uses in the broad spectrum of clinically important heart disease.. The book was written by a group of well-recognized international experts in the field, who have not only been involved in scientific and clinical evolution of 3D echocardiography since its beginnings but are also intensely involved in expert training courses. As a result, the clear focus of this book is on the ...
Three-dimensional echocardiography (3DE) enables an easier, accurate and reproducible interpretation of the complex cardiac anatomy, overcoming the intrinsic limitations of conventional echocardiography. The availability of unprecedented views of cardiac structures from any perspective in the beating heart provides valuable clinical information and new levels of confidence in diagnosing heart disease. One major advantage of 3DE is the improvement in the accuracy and reproducibility of chamber volume measurement by eliminating geometric assumptions and errors caused by foreshortened views. Another benefit of 3DE is the realistic en face views of heart valves, enabling a better appreciation of the severity and mechanisms of valve diseases in a unique, noninvasive manner.. In previous years, the Atlas of real-time three-dimensional echocardiography has been one of the most visited sections of the website of the European Association of Echocardiography. Since its launch in December 2008, it has been ...
TY - JOUR. T1 - Performance of two-dimensional Doppler echocardiography for the assessment of infarct size and left ventricular function in rats. AU - Nozawa, E.. AU - Takeuchi, Rosemeire. AU - Murad, N.. AU - Carvalho, A. C C. AU - Cravo, S. L D. AU - Campos, O.. AU - Tucci, P. J F. AU - Moises, V. A.. PY - 2006/5. Y1 - 2006/5. N2 - Although echocardiography has been used in rats, few studies have determined its efficacy for estimating myocardial infarct size. Our objective was to estimate the myocardial infarct size, and to evaluate anatomic and functional variables of the left ventricle. Myocardial infarction was produced in 43 female Wistar rats by ligature of the left coronary artery. Echocardiography was performed 5 weeks later to measure left ventricular diameter and transverse area (mean of 3 transverse planes), infarct size (percentage of the arc with infarct on 3 transverse planes), systolic function by the change in fractional area, and diastolic function by mitral inflow parameters. ...
This study provides further evidence that echocardiographically measured LV mass predicts adverse outcomes from hypertension. Age and echocardiographic LV hypertrophy independently predicted subsequent cardiovascular events. There were limitations to the study design and execution that may have influenced the results. First, the patients age range was wide, and the duration of hypertension at entry was variable, producing a rather diverse cohort. Second, the cohort consisted of volunteers for research studies and may not be representative of general populations. Third, patient and physician reporting of morbidity and causes of death may have been influenced by the knowledge of echocardiographic abnormalities. Fourth, the collection of outcome data was not preplanned and it is not stated how much of the telephone data was backed up by documentation from records. Does echocardiography add prognostic information to that provided by readily available and less expensive diagnostic methods? LV mass ...
Objectives To assess the repeatability of commonly employed transthoracic echocardiographic measurements in standing horses.. Design Thirteen healthy 3- to 4-year-old fit Standardbred geldings with a mean weight of 411 (SEM ± 10) kg were studied. The horses environment, feeding and management regimens were standardised. All measurements were performed by the same investigator at the same time every day for three consecutive days.. Procedures Standard transthoracic measurements were made on all horses. Each measurement was performed over three consecutive cardiac cycles on 1 day and all measurements were performed over 3 consecutive days. Summary statistics of each day were then compared using an analysis of variance with times as a repeated measures factor. Statistical significance was set at P , 0.05.. Results Many of the standard echocardiographic measurements used to derive quantitative and functional information about the equine heart have a low intra-observer variability.. Conclusions ...
TY - CHAP. T1 - Echocardiography in the Context of Other Cardiac Imaging Modalities. AU - Horgan, Stephen J.. AU - Uretsky, Seth. PY - 2019/1/1. Y1 - 2019/1/1. N2 - Echocardiography maintains a central role in cardiovascular assessment despite recent advances in multimodality imaging. Some of the advantages of echocardiography include portability, rapid availability, low cost, safety and excellent temporal resolution. This in combination with continued technological development is the reason why cardiac ultrasound is the imaging tool of first choice in almost all conditions bar the assessment of flow limiting coronary stenosis. Cardiac magnetic resonance imaging, coronary computed tomographic angiography, single photon emission computed tomography and positron emission tomography each have unique advantages. The strengths and weaknesses of the different imaging modalities are discussed in this chapter and their utility outlined in conjunction with echocardiography. The synergistic relationship ...
Heritage Valleys Heart & Vascular Centers in Beaver and Leetsdale have been granted an additional three-year term of accreditation by the Intersocietal Accreditation Commission (IAC) in Echocardiography in the areas of Adult Transthoracic and Adult Stress. The accreditation demonstrates the Heart & Vascular Centers ongoing commitment to providing quality patient care in echocardiography.. Echocardiography is used to assess different areas of the heart and can detect heart disease or signs of serious conditions. Heart disease is the leading cause of death in the United States and according to the American Heart Association, more than 2,150 Americans die each day from cardiovascular disease which amounts to about one every 40 seconds.. Early detection of life-threatening heart disorders and other diseases is possible through the use of echocardiography procedures, said Dr. Michael Malkowski, Medical Director, Echocardiography, Heritage Valley Heart & Vascular Center. We are proud to once ...
Fingerprint Dive into the research topics of Prognostic value of dipyridamole stress myocardial contrast echocardiography: comparison with single photon emission computed tomography. Together they form a unique fingerprint. ...
Dear colleague:. I invite you to attend attend the 20th Annual Canadian Society of Echocardiography Weekend from April 12- 14, 2018 at the Toronto Marriott Downtown Eaton Centre Hotel. We have developed an exciting educational program for you celebrating our 20th anniversary with a special look at Echocardiography Past, Present and Future on Thursday evening. This will be followed by two case-based packed days of learning and interaction with colleagues, friends and experts from across Canada.. The Annual Canadian Echo Weekend is designed around your needs and requests over the past nineteen meetings. We will focus on common clinical problems encountered in your practice and the important role that echocardiography plays in diagnosis and patient management. Novel and evolving technologies to enhance your diagnostic capabilities and improve patient care will be highlighted.. We are excited to bring to you this year THREE different ticketed hands-on workshops 3D Echocardiography Made Simple!, ...
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This study was carried out to determine the cardiac reference parameters of Karabash dogs, a breed specific to Turkey, using M-mode and 2-D echocardiography techniques.. The material of the study comprised 25 male and 25 female Karabash dogs aged between 2 and 6 and weighing between 30 and 51 kg. The dogs were divided into 5 groups according to their body weight (BW) which were group I (26-30 kg), group II (31-35 kg), group III (36-40 kg), group IV (41-45 kg.) and group V (46-51 kg); and into 4 groups according to their body surface areas (BSA) which were group I (0.70-0.79m2), group II (0.80-0.89 m2), group III (0.90-0.99 m2) and group IV (1.0-1.1 m2). The dogs were examined in 2 groups according to their sex. The M-mode echocardiographic measurements were taken from the longitudinal axis of the 4th and 6th right intercostal space under the guidance of 2-D echocardiography. Measurement of the ventricular dimensions were made below the mitral valve at the chordal level; mitral valve measurements ...
Introduction: Stress echocardiography is a safe and cost-effective method of evaluating the patients with suspected coronary artery disease (CAD). However, the risk factors of an adverse cardiovascular event after a normal exercise (ESE) or dobutamine (DSE) stress echocardiography are not well established. Methods: A cohort of 705 patients without previous history of CAD and a negative ESE/DSE was studied. All studies were performed in a high-volume echocardiologic laboratory and interpreted by two experienced echocardiography-trained cardiologists. Patients with inconclusive studies and those with an evidence of myocardial ischemia were excluded. Demographic, echocardiographic and hemodynamic findings were recorded. Patients were followed for at least 2 years. Independent predictors of major adverse cardiovascular events (MACE) were determined by regression analysis. Results: During a period of 55.7±17.5 months, MACE occurred in 35 (5.0%) of patients. Negative predictive value (NPV) of DSE was 89.2%
Background: Patent ductus arteriosus (PDA) closure results in a sudden drop in left ventricular (LV) preload, and this may affect the LV functions. Aim: The aim was to evaluate the immediate- and short-term changes in LV functions by speckle tracking echocardiography (STE) post percutaneous PDA closure. Materials and Methods: The study included 45 patients with PDA who were referred for PDA trans-catheter closure. All the patients included in the study underwent full echocardiographic examination and speckle tracking analysis before PDA closure, immediately after closure, and 1 month after the PDA closure. Results: There was no statistically significant change in LV functions by two-dimensional transthoracic echocardiography; the LV end-diastolic volume (EDV) decreased significantly in the immediate follow-up from 41.608 ± 25.8846 ml before duct closure to 36.317 ± 21.6945 ml. The drop in the LV EDV continued in the 1-month follow-up. The LV end-systolic volume decreased as well, however it ...
Practical Perioperative Transoesophageal Echocardiography, 3rd edition, is a concise guide to the use of transoesophageal echocardiography (TOE) for patients undergoing cardiac surgical and interventional cardiological procedures. The text is aimed at anaesthetists and cardiologists, particularly those in training and those preparing for examinations. Three-dimensional imaging is integrated throughout the text. New to the third edition are chapters on mitral valve repair, aortic valve repair, TOE in the interventional catheter laboratory, and TOE assessment of pericardial disease. The first three chapters address the fundamentals of ultrasound imaging: physical principles, artefacts, image optimization, and quantitative echocardiography. Chapters 4 and 5 cover standard views, anatomical variants, and cardiac masses. Chapters 6 and 7 address left ventricular systolic and diastolic function, respectively. The subsequent eight chapters form the core of the book and deal with the cardiac valves and ...
Definition of echocardiography, transesophageal in the Definitions.net dictionary. Meaning of echocardiography, transesophageal. What does echocardiography, transesophageal mean? Information and translations of echocardiography, transesophageal in the most comprehensive dictionary definitions resource on the web.
While the Apical four-chamber view depicts the left ventricular lateral and septal walls, the apical two-chamber view isolates the anterior and inferior walls. Particular effort should be made to image as much of the endocardial border as possible in order to accurately assess left ventricular wall motion, myocardial thickness and chamber volume.. Imaging the apical two-chamber view is generally easier than the apical four-chamber view because the sector axis is more parallel to the axis of the intercostal space where the transducer is placed. Respiratory maneuvers, (including hyper-inspiration or expiration with suspension where the image is clearest), can make a dramatic improvement when image quality is sub-optimal.. Because the left ventricular apex tends to curve posteriorly, the two-chamber view depicts the true left ventricular apex more easily than the four-chamber view and can help determine whether or not the four-chamber view was foreshortened. The apical two-chamber view can be ...
The present study was designed to determine whether the wall thickening seen in acute myocarditis is caused by interstitial edema. The study group comprised 25 patients (idiopathic myocarditis, 17; eosinophilic myocarditis, 8) in whom acute myocardit
To determine whether cardiac changes provoked by the V146M variant of ADIPOR1 are able to be reversed by silencing mTOR, we treated ADIPOR1 transgenic mice with rapamycin. Rapamycin has been shown to ameliorate myocyte hypertrophy and attenuate cardiac remodeling and dysfunction in response to mechanical stress or cardiac injury (17-19). Rapamycin treatment effectively reversed Cre-V146M-induced cardiac functional deterioration. LV function and dimensions were measured by serial echocardiography at baseline and following vehicle or rapamycin treatment for 30 days; rapamycin (2 mg/kg), a dose equivalent to that used in humans based on body surface area, was administered orally each day (20). Cardiac contractility, as assessed by fractional shortening (FS) (Cre-V146M-Veh versus Cre-V146M-Rapa: FS%, 39.68 ± 8.29 versus 63.46 ± 2.23; P , 0.0001) (Fig. 6, A and B, and table S1F) and the ejection fraction (EF) (Cre-V146M-Veh versus Cre-V146M-Rapa: EF%, 77.09 ± 8.45 versus 93.68 ± 2.88; P , 0.01) ...
Left ventricular and central venous pressures, echocardiographic assessment, and direct postmortem cardiac examination were used to verify that heart failure had developed 16 wk after left coronary arterial ligation in our test rats. Our findings showed an increased left ventricular end-diastolic pressure and an increased central venous pressure, both of which are signs of heart failure. Echocardiography is commonly used as a noninvasive method to assess cardiac function during heart disease (5, 7, 12, 39). Our 2D and 2D-guided M-mode images demonstrated an increased left ventricular internal diameter, endocardial area, and left ventricular volume in the heart failure rats compared with the control rats. Fractional shortening and ejection fraction were significantly lower in heart failure rats. Postmortem measurement showed that left ventricular mass was increased in the heart failure rats. This occurred simultaneously with chamber enlargement, but with relatively normal wall thickness, which ...
Three-dimensional echocardiography (also known as four-dimensional echocardiography when the picture is moving) is now possible ... Intracardiac echocardiography (ICE) is specialized form of echocardiography that uses catheters to insert the ultrasound probe ... Echocardiography was also the first ultrasound subspecialty to use intravenous contrast. Echocardiography is performed by ... These modes are common to all types of echocardiography. Amplitude mode is not a mode used in modern echocardiography. ...
... , or Fetal echocardiogram, is the name of the test used to diagnose cardiac conditions in the fetal stage ... The critical role of echocardiography in prenatal diagnosis is evident, and both the accuracy and safety of the test are now ... To improve detection, some propose universal fetal echocardiography. But others cite cost and lack of specialized personnel as ... Davey BT, Seubert DE, Phoon CK (Jun 2009). "Indications for fetal echocardiography high referral, low yield?". Obstet Gynecol ...
Basic ultrasound, echocardiography and Doppler for clinicians Echocardiography Textbook by Bonita Anderson Echocardiography ( ... Medical ultrasonography section: Doppler sonography Echocardiography American Society of Echocardiography Christian Doppler " ... Doppler echocardiography is a procedure that uses Doppler ultrasonography to examine the heart. An echocardiogram uses high ... An advantage of Doppler echocardiography is that it can be used to measure blood flow within the heart without invasive ...
... (TDE) is a medical ultrasound technology, specifically a form of echocardiography that measures ... The technique is the same as for flow Doppler echocardiography measuring flow velocities. Tissue signals, however, have higher ... are usually synonymous with TDE because echocardiography is the main use of tissue Doppler. Like Doppler flow, tissue Doppler ...
In the fields of cardiology and medical imaging, speckle tracking echocardiography (STE) is an echocardiographic imaging ... Role of tissue Doppler and strain echocardiography in current clinical practice. Circulation 2007;116: 2597-609. D'Hooge J, ... Comparison of two-dimensional speckle and tissue Doppler strain measurement during dobutamine stress echocardiography: an ... New noninvasive method for assessment of left ventricular rotation: speckle tracking echocardiography. Circulation. 2005 Nov 15 ...
... (or FATE) is a type of transthoracic echocardiogram, or sonogram of the heart, ... These are all variations of the original theme [1]. Echocardiography "fate protocol" or "focus assessed transthoracic ... echocardiography" - Search Results - PubMed Official FATE protocol website with downloadable FATE card (Articles needing ...
A mobile app developed by ASE called iASE has been rated as one of the top echocardiography apps ASE joined Choosing Wisely in ... "American Society of Echocardiography and Guidelines". pubmed.gov. Retrieved 21 February 2015. "Saving the heart after cancer ... The American Society of Echocardiography (ASE) is a professional organization of physicians, cardiac sonographers, nurses and ... "Choosing Wisely - American Society of Echocardiography". Choosing Wisely. Retrieved 21 February 2015. v t e (Articles needing ...
Echocardiography uses ultrasound to create real-time anatomic images of the heart and its structures. Doppler echocardiography ... Echocardiography Textbook by Bonita Anderson Echocardiography (Ultrasound of the heart) Doppler Examination - Introduction The ... Medical ultrasonography section: Doppler sonography Echocardiography American Society of Echocardiography Christian Doppler Oh ... Numerical manipulation of Doppler parameters obtain during routine Echocardiography has been extensively utilized to non- ...
SCHNEIDER, MICHEL (1999). "Characteristics of SonoVue™". Echocardiography. Wiley. 16 (s1): 743-746. doi:10.1111/j.1540- ...
Diagnosis can occur prenatally via ultrasound or shortly after birth via echocardiography. Initial management is geared to ... Hypoplastic left heart syndrome can be diagnosed prenatally or after birth via echocardiography. Typical findings include a ... Echocardiography. 34 (12): 1834-1841. doi:10.1111/echo.13667. ISSN 1540-8175. PMID 29287139. S2CID 12087225. Tchervenkov, C. I ...
Uses include: Doppler echocardiography is the use of Doppler ultrasonography to examine the heart. An echocardiogram can, ... This contrast medical imaging modality is used throughout the world, for echocardiography in particular in the United States ... Page 161 (part II > Two-dimensional Echocardiography) in: Reves, J. G.; Estafanous, Fawzy G.; Barash, Paul G. (2001). Cardiac ... Other clinical applications using contrast exist, as in echocardiography to improve delineation of left ventricle for ...
Echocardiography. 37 (8): 1321-1322. doi:10.1111/echo.14790. ISSN 0742-2822. PMC 7404830. PMID 32654172. Group, The Severe ...
Echocardiography. 21 (8): 673-9. doi:10.1111/j.0742-2822.2004.03174.x. PMID 15546367. Table 30-1 in: Trudie A Goers; ...
Echocardiography. 25 (5): 526-8. doi:10.1111/j.1540-8175.2007.00617.x. PMID 18177380. S2CID 39607363. Matsumoto N, Sato Y, ...
... confirmation by intraoperative transesophageal echocardiography". Echocardiography. 20 (3): 283-7. doi:10.1046/j.1540-8175.2003 ...
Perhaps the first common bedrock measurement method was echocardiography, although cardiac magnetic resonance imaging (MRI), ... Armstrong WF, Ryan T, Feigenbaum H (2010). Feigenbaum's Echocardiography. Lippincott Williams & Wilkins. ISBN 978-0-7817-9557-9 ... "4.00-Cardiovascular-Adult". Armstrong WF, Ryan T (2012-02-03). Feigenbaum's Echocardiography. Lippincott Williams & Wilkins. p ... Echocardiography. 31 (1): 87-100. doi:10.1111/echo.12331. PMC 4231568. PMID 24786629. Asferg C, Usinger L, Kristensen TS, ...
Echocardiography. 23 (6): 503-5. doi:10.1111/j.1540-8175.2006.00249.x. PMID 16839390. S2CID 12418775. Strahilevitz, J; Rahav, G ...
In severe cases, echocardiography is performed every 3-6 months. In both moderate and mild cases, the person should immediately ... In moderate cases echocardiography is performed every 1-2 years to monitor the progression, possibly complemented with a ... doi:10.1111/anec.12457 "Senile aortic stenosis". Yale atlas of echocardiography. 1999. Archived from the original on November ... Echocardiography. 28 (1): 1-7. doi:10.1111/j.1540-8175.2010.01256.x. PMID 20678125. S2CID 205746869. Nathaniel S, Saligram S, ...
Echocardiography can also help to detect congenital heart disease as a cause of pulmonary hypertension. 4-month-old with ... Thus, Doppler echocardiography can suggest the presence of pulmonary hypertension, but right heart catheterization (described ... January 2013). "Echocardiography in pulmonary arterial hypertension: from diagnosis to prognosis". Journal of the American ... If pulmonary hypertension is suspected based on the above assessments, echocardiography is performed as the next step. A meta- ...
From 2002 to 2004, Pinto served as president and founder of the European Association of Echocardiography. From 2008 to 2010, he ... He was then worked as a clinician the Echocardiography laboratory and underwent a fellowship in Interventional Cardiology at ... Echocardiography; Heart failure and Diastology and Hypertension.[citation needed] His main positions are Full Professor of ...
Stoddard, M. F. (2000). "Risk of thromboembolism in acute atrial fibrillation or atrial flutter". Echocardiography. 17 (4): 393 ...
Echocardiography. 20 (1): 71-3. doi:10.1046/j.1540-8175.2003.00010.x. PMID 12848701. S2CID 26572152. Nash, Ira S. (October 2002 ...
Echocardiography is used to diagnose this condition. Other pathologies of the truncus arteriosus include transposition of the ... ISBN 978-0-07-163340-6. "Truncus Arteriosus , Pediatric Echocardiography". "Truncus Arteriosus Imaging: Overview, Radiography, ...
Echocardiography can be conducted by a probe on the chest (transthoracic), or by a probe in the esophagus (transesophageal). A ... Several imaging methods can be used to assess the anatomy and function of the heart, including ultrasound (echocardiography), ... Armstrong, William F.; Ryan, Thomas; Feigenbaum, Harvey (2010). Feigenbaum's Echocardiography. Lippincott Williams & Wilkins. ... typical echocardiography report will include information about the width of the valves noting any stenosis, whether there is ...
If a patent foramen ovale (PFO) is suspected, an examination by echocardiography may be performed to diagnose the defect. In ... Shah SN (20 November 2016). Ali YS (ed.). "Imaging Studies - Echocardiography". Patent Foramen Ovale Workup. Medscape. ...
Speckle tracking echocardiography is based on grey scale echocardiography (B-mode), and the fact that the reflected echo from ... Echocardiography 1998,15(8 part 2):S40. Abstract. Urheim S, Edvardsen T, Torp H, Angelsen B, Smiseth OA. Myocardial strain by ... It has been shown to be at least as accurate as B-mode echocardiography. Deformation imaging has also been shown to be useful ... In stress echocardiography (see Cardiac stress test), the regional dysfunction due to ischemia will become evident when the ...
... e-echocardiography.com. Retrieved 2018-03-30. Richard Van Pragh: Cardiac anatomy in A. C. Chang et al.: Pediatric Cardiac ...
American Society of Echocardiography; American Psychosomatic Society; European Association of Echocardiography Iuliu Hatieganu ...
American Society of Echocardiography. 2021 Edition: 3, 4. "The Basics". American Society of Echocardiography. Retrieved 17 ...
Cardiac stress tests, including stress echocardiography and nuclear stress tests, are used to detect a block in blood flow to ... Echocardiography; American Society of Nuclear, Cardiology; North American Society for Cardiovascular, Imaging; Society for ... the American Society of Echocardiography, the American Society of Nuclear Cardiology, the North American Society for ...
Fetal echocardiography is a test that uses sound waves (ultrasound) to evaluate the babys heart for problems before birth. ... Fetal echocardiography is a test that is done while the baby is still in the womb. It is most often done during the second ... Fetal echocardiography is a test that uses sound waves (ultrasound) to evaluate the babys heart for problems before birth. ... Some heart defects cannot be seen before birth, even with fetal echocardiography. These include small holes in the heart or ...
Echocardiography. Bedside echocardiography may rapidly identify reversible cardiac problems (eg, cardiac tamponade, tension ... Echocardiography also identifies patients with weak cardiac contractions who have pseudo-PEA. This group of patients is more ... Steiger HV, Rimbach K, Muller E, Breitkreutz R. Focused emergency echocardiography: lifesaving tool for a 14-year-old girl ... Echocardiography is also invaluable in identifying right ventricular enlargement, pulmonary hypertension suggestive of ...
Echocardiography. Echocardiography is the most important diagnostic tool to evaluate patients with mitral stenosis (MS). This ... Transesophageal echocardiography. Transesophageal echocardiography is used when transthoracic echocardiographic pictures are ... Insights from three-dimensional echocardiography. Echocardiography. 2018 Mar. 35(3):417-9. [QxMD MEDLINE Link]. ... Echocardiography provides the following:. * Direct anatomic data, such as visualization of valve leaflet morphology and ...
Fetal echocardiography is a diagnostic test that checks the hearts of unborn babies. Learn about the process and testing ... Fetal echocardiography is a type of imaging study that allows doctors to view the heart of an unborn baby before birth. ... Fetal echocardiography means the use of ultrasound to look at the structures and function of the heart. ...
... Pulm Pharmacol Ther. 2007;20(2):135-40. doi: ... In patients with PH echocardiography provides information about right heart dimensions, pulmonary artery pressures, right ...
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... : evidence-based recommendations by European Association of Echocardiography. Senior R, Becher H, ... An echocardiographic multicenter comparison study using myocardial contrast echocardiography and 2D echocardiography.. Hoffmann ... using echocardiography made jointly by the American Society of Echocardiography and European Association of Echocardiography.. ... Myocardial contrast echocardiography: a 25-year retrospective.. Kaul S, FESC.. Comment:. A 25-year retrospective review on MCE ...
A nosocomial outbreak of Legionella pneumophila caused by contaminated transesophageal echocardiography probes. Infect Control ... cultures were related to use of ultrasound transmission gel from a single manufacturer during transesophageal echocardiography ... aeruginosa Respiratory Tract Infections Associated with Contaminated Ultrasound Gel Used for Transesophageal Echocardiography ...
This course is designed to give the veterinary practitioner a basic understanding of small animal echocardiography. Major ...
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Echocardiography. Program Outcomes. Years. (2018, 2019, 2020). Graduates Benchmark , 70% retention (3-year average). ...
... echocardiography continues to be a key in diagnosing heart conditions. Providers are wondering ... Echocardiography 2013. 2D or Not 2D? March 22, 2013 , Read Time: 4 minutes ... With cost pressures and radiography dose concerns growing, echocardiography continues to be a key in diagnosing heart ...
Echocardiography in cardiac arrest: strengths and limitations : European Journal of Emergency Medicine. ... Echocardiography in cardiac arrest: strengths and limitations European Journal of Emergency Medicine29(6):458-459, December ... Echocardiography in cardiac arrest: strengths and limitations. Lazzeri, Chiara; Bonizzoli, Manuela; Peris, Adriano ...
The Echocardiography (Echo) Core Lab at Mayo Clinic offers third-party interpretation of echocardiographic studies for clinical ... Echocardiography (Echo) Core Lab. The Echocardiography (Echo) Core Lab is a core laboratory of the Cardiovascular Research ... the Echo Core Lab provides echocardiography measurements for clinical investigations and trials that use echocardiography for ...
Accurate, comprehensive quantification of regional left ventricular (LV) deformation is crucial for detection, risk stratification, and management of patients
Echocardiography allowed a better understanding of dynamic anatomy of the newborn dog, which was previously studied in others ... Echocardiography is an appropriate method for non-invasive serial evaluations of changes of the growing cardiac chamber ...
cine study or stress echocardiography.. • Cet article propose une façon structurée de lire un. Follow-up echocardiography could ... American Society of Echocardiography Committee on Standards,. who receive these documents (Table 1). Echocardiography ... MAIN MESSAGE Transthoracic echocardiography is a basic tool for diagnosis and follow-up of heart. disease. Items of interest in ... thoracic echocardiography are implicit, but techni-. ple, if a laboratory is asked to rule out cardiac embolism. cians might ...
The poster outlines the use of echocardiography in the assessment of HCM, including but not limited to:. *Evaluating LV ... American Society of Echocardiography. The Society for Cardiovascular Ultrasound Professionals. 2530 Meridian Parkway, Suite 450 ... Download Your Copy of The Role of Echocardiography in Hypertrophic Cardiomyopathy Poster. This professionally illustrated 16″ x ...
Transesophageal echocardiography (TEE) is one of the main diagnostic tools of contemporary cardiology. It can provide high ...
Find a location with Echocardiography (ECHO) Lab Services at UPMC Children's Hospital of Pittsburgh. ... Locations for Echocardiography (ECHO) Lab Services. ECHO Lab Services at UPMC Childrens Hospital of Pittsburgh offers services ...
Sheetal Patel explains the role prenatal echocardiography plays in diagnosing CHD and the benefit of early diagnosis. ... When Is Fetal Echocardiography Necessary?. Not every expectant mother needs to have a fetal echocardiogram. However, if the ... Because of limitations with fetal echocardiography, it may not detect minor cardiac valve abnormalities, small holes between ... explains the role prenatal echocardiography plays in diagnosing CHD and the benefit of early diagnosis. ...
... - Virtual Conference provides the most comprehensive review with topics based on current ... ARDMS exam content outlines for successfully completing the adult echocardiography certification exam. ... ADULT ECHOCARDIOGRAPHY. ANESTHESIOLOGY. EMERGENCY/CRITICAL CARE. MUSCULOSKELETAL. OB/GYN & BREAST. PEDIATRIC. PHYSICS. REGISTRY ... Master Level Adult Echocardiography Registry Review Faculty. *The GCUS PASS Guarantee Offers All Course Participants Access to ...
Copyright © 2022 BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.. ...
Consultant cardiologist and the first clinical lead for echocardiography at Harefield Hospital ... Echocardiography in the 21st century. Echocardiography does not use ionising radiation, so it is extremely safe for patients to ... Echocardiography is the name given to ultrasound examination of the heart. As we all know, we cannot do better than to mimic ... Before echocardiography. When the NHS was established 70 years ago there was no imaging technology which could give you a ...
Rapid, Repeatable Echocardiography for Small to Larger Animals Ultra-high frequency (UHF) ultrasound provides superior ... Perform reliable echocardiography in mice and other small animals for translational cardiovascular research with in vivo ... Toward standardization of echocardiography for the evaluation of left ventricular function in adult rodents: a position paper ... Quantify ejection fraction and fractional shortening with more accuracy than traditional echocardiography, and faster than ...
The Fetal Echocardiography Live Webinar had a total of 59 attendees and 63 Zoom registrations. Out of that total, 18 were WCUI ... CME Webinar Recap: Fetal Echocardiography. WCUIs CME Division wrapped up an active 2020 year with a virtual webinar on Fetal ... Echocardiography: Beyond the 4-Chamber View. During the 2-hour webinar, speakers Jason Grabham RDCS, FASE, Externship Director ...
Get exceptional Echocardiography services from highly experienced & loving pet care professionals in Anderson, IN. Visit VCA ... The power of echocardiography is the ability to look inside the heart at various structures. Wall thickness can be measured, ... Our hospital offers echocardiography as one of our many cardiology services. An echocardiogram is an ultrasound (sonogram) exam ...
Color M-mode echocardiography-derived propagation velocity of descending aorta decreases with aging Mehmet Yaman,1,2 Uğur ... Color M-mode echocardiography-derived propagation velocity of descending aorta decreases with aging. ...
... an Assistant Professor in the Department of Anesthesiology who also specializes in Perioperative Medicine and Echocardiography ... National Board of Echocardiography (Adult Comprehensive Echocardiography). National Board of Echocardiography (Perioperative ... National Board of Echocardiography (Adult Comprehensive Echocardiography). National Board of Echocardiography (Perioperative ... She is board certified in Comprehensive Perioperative Echocardiography (ASCeXAM). Her clinical interests include point-of-care ...
Advanced Application of contrast-enhanced echocardiography. Summary. More about Professor Kazuaki Negishi Contact research ... This PhD program involves multi-modality cardiovascular imaging techniques, such as echocardiography (TTE), and Cardiac MRI in ... This PhD project aims to advance the clinical application of contrast echocardiography, especially focusing on microcirculation ...
  • Transesophageal echocardiography is used when transthoracic echocardiographic pictures are inadequate. (medscape.com)
  • OBJECTIVE To help referring physicians extract clinically useful information from transthoracic echocardiography (TTE) reports, highlighting current practice and innovations that are reflected with increasing frequency in reports issued by echocardiac laboratories. (scribd.com)
  • MAIN MESSAGE Transthoracic echocardiography is a basic tool for diagnosis and follow-up of heart disease. (scribd.com)
  • The Hospital is reaccredited in the areas of Adult Transthoracic, the most common type of echocardiogram, which is a still or moving image of the internal parts of the heart using ultrasound and for Adult Stress Echocardiography. (evanhospital.com)
  • Preoperative transthoracic echocardiography indicated the peak pressure gradient of a left-to-right PDA shunt as 14 mmHg. (springer.com)
  • Transthoracic and transoesophageal echocardiography are increasingly used as tools to improve clinical assessment following cardiac surgery. (monash.edu)
  • However, most physicians are not trained in echocardiography, and there is no widespread agreement on the feasibility, indications or effect on outcome of transthoracic or transoesophageal echocardiography for patients after cardiac surgery. (monash.edu)
  • We performed a systematic review of electronic databases for focused transthoracic and transoesophageal echocardiography after cardiac surgery which revealed 15 full-text articles. (monash.edu)
  • We conclude that both transthoracic and transoesophageal echocardiography are useful following cardiac surgery. (monash.edu)
  • During our transthoracic echocardiography (TTE) courses, medical students showed difficulty in spatial orientation. (biomedcentral.com)
  • Transthoracic echocardiography (TTE) is an essential clinical skill which is a routine part of cardiac surgery and cardiology resident training. (biomedcentral.com)
  • FE and postnatal transthoracic echocardiography were done. (springeropen.com)
  • A transthoracic echocardiography upon his presentation at the ER reveals abundant circumferential pericardial effusion of 20-mm thickness, normal left ventricular ejection fraction, and pre-tamponade signs. (medpagetoday.com)
  • 0.0001) than transthoracic echocardiography. (bvsalud.org)
  • 170 patients underwent MCE during dobutamine stress echocardiography prior to coronary angiography. (escardio.org)
  • The aim of the study was to assess the ability of dobutamine stress echocardiography to detect myocardial viability and ischemia in patients with acute myocardial infarction treated with thrombolysis and to correlate the acute response to dobutamine with late spontaneous functional recovery at follow-up. (elsevier.com)
  • Forty-two consecutive patients with myocardial infarction treated with thrombolysis underwent low- (5 and 10 mcg/kg/min) and high-dose (20 to 40 mcg/kg/min) dobutamine stress echocardiography at a mean of 7 ± 3 days of the acute phase. (elsevier.com)
  • Describe the roles of transesophageal echocardiography, stress echocardiography, 3-Dimensional echocardiography and contrast echocardiography in clinical practice. (baptisthealth.net)
  • Interpretation of dobutamine stress echocardiography is observer-dependent and requires experience. (elsevier.com)
  • This study was performed to evaluate whether these new imaging modalities would improve endocardial visualization and enhance accuracy and efficiency of the inexperienced reader interpreting dobutamine stress echocardiography. (elsevier.com)
  • Methods and Results: Twenty-nine consecutive patients with known or suspected coronary artery disease underwent dobutamine stress echocardiography. (elsevier.com)
  • Conclusion: Harmonic imaging with contrast significantly improves the accuracy and efficiency of the novice dobutamine stress echocardiography reader. (elsevier.com)
  • Investigation by BHS staff members found that all of these positive cultures were related to use of ultrasound transmission gel from a single manufacturer during transesophageal echocardiography. (cdc.gov)
  • Multi-View 3D Transesophageal Echocardiography Registration and Volume" by Patrick Carnahan, John Moore et al. (uwo.ca)
  • For procedures targeting the mitral valve, transesophageal echocardiography (TEE) is the primary imaging modality used as it provides clear 3D images of the valve and surrounding tissues. (uwo.ca)
  • The use of transesophageal echocardiography to evaluate the effectiveness of patent ductus arteriosus ligation. (springer.com)
  • Detection of residual flow by transesophageal echocardiography during video-assisted thoracoscopic patent ductus arteriosus interruption. (springer.com)
  • New diagnostic techniques (transesophageal echocardiography, cardiac magnetic resonance imaging) have allowed clinicians to better characterize well-established sources of embolism and to discover other potential etiologies of cardioembolic stroke (see the following image). (medscape.com)
  • Fetal echocardiography is a test that uses sound waves ( ultrasound ) to evaluate the baby's heart for problems before birth. (medlineplus.gov)
  • Fetal echocardiography means the use of ultrasound to look at the structures and function of the heart. (cincinnatichildrens.org)
  • Additionally, all participants receive a BONUS 5 DAY UNLIMITED ACCESS to the Adult Echocardiography Registry Review Online Course (Only offered by Gulfcoast Ultrasound Institute). (gcus.com)
  • Echocardiography is the name given to ultrasound examination of the heart. (rbht.nhs.uk)
  • Her clinical interests include point-of-care ultrasound (POCUS) diagnostics, perioperative optimization, minimally invasive echocardiography guided procedures, quality improvement and health equity. (utah.edu)
  • In partnership with the ASE Critical Care Echocardiography Council , the recipients (critical care ultrasound physician student or sonographer) will receive a $1,000 travel stipend from the ASE Foundation to support their attendance at the 34th Annual ASE Scientific Sessions, June 23 - 26, 2023. (asefoundation.org)
  • Fetal echocardiography is a test that is done while the baby is still in the womb. (medlineplus.gov)
  • Some heart defects cannot be seen before birth, even with fetal echocardiography. (medlineplus.gov)
  • Hagen-Ansert SL, Guthrie J. Fetal echocardiography: congenital heart disease. (medlineplus.gov)
  • Fetal echocardiography is a type of imaging study that allows doctors to view the heart of an unborn baby before birth. (cincinnatichildrens.org)
  • Dr. Sheetal Patel , Director of Lurie Children's Fetal Cardiology Program and Assistant Professor of Pediatrics, Northwestern University Feinberg School of Medicine, explains the role prenatal echocardiography plays in diagnosing CHD and the benefit of early diagnosis. (luriechildrens.org)
  • WCUI's CME Division wrapped up an active 2020 year with a virtual webinar on Fetal Echocardiography: Beyond the 4-Chamber View . (wcui.edu)
  • The Fetal Echocardiography Live Webinar had a total of 59 attendees and 63 Zoom registrations. (wcui.edu)
  • To promote this mission, the AIUM is pleased to publish in conjunction with the American College of Obstetricians and Gynecologists (ACOG), the Society for Maternal-Fetal Medicine (SMFM), and the American Society of Echocardiography (ASE) this AIUM Practice Guideline for the Performance of Fetal Echocardiography. (elsevier.com)
  • We aimed to evaluate the role of fetal echocardiography (FE) as a diagnostic tool for early detection and proper management of fetal cardiac abnormalities, study the indications of referral and detect the perinatal outcome in our institution. (springeropen.com)
  • Maternal psychological impact of fetal echocardiography. (bvsalud.org)
  • Congenital left atrial appendage aneurysm diagnosed by fetal echocardiography. (chvd-journal.com)
  • In particular, the Echo Core Lab provides echocardiography measurements for clinical investigations and trials that use echocardiography for patient eligibility or study endpoints or both. (mayo.edu)
  • Dr Shelley Rahman Haley is a consultant cardiologist and the first clinical lead for echocardiography at Harefield Hospital. (rbht.nhs.uk)
  • This PhD program involves multi-modality cardiovascular imaging techniques, such as echocardiography (TTE), and Cardiac MRI in humans (including clinical trials) and animal models. (edu.au)
  • This PhD project aims to advance the clinical application of contrast echocardiography, especially focusing on microcirculation. (edu.au)
  • This reports our clinical study of the usefulness of intraoperative echocardiography to both surgeons and anesthesiologists for high-risk coronary artery bypass grafting. (duke.edu)
  • Due to increased needs to reduce non-fatal as well as fatal cardiac events , preoperative echocardiography remains part of routine clinical practice in many hospitals . (bvsalud.org)
  • In real-world clinical practice, preoperative echocardiography was performed in substantial number of patients with potential cardiac risk even in low- risk NCS, and abnormal findings were independently associated with postoperative CVE. (bvsalud.org)
  • Intracardiac echocardiography (ICE) has been employed in guiding clinical interventional procedures. (elsevier.com)
  • Myocardial contrast echocardiography (MCE) is a new technique that can be used to examine the myocardial microcirculation. (elsevier.com)
  • Kaul, S 2001, ' Myocardial contrast echocardiography: Basic principles ', Progress in Cardiovascular Diseases , vol. 44, no. 1, pp. 1-11. (elsevier.com)
  • She is board certified in Comprehensive Perioperative Echocardiography (ASCeXAM). (utah.edu)
  • CONCLUSIONS: We conclude that when all of the isolated diagnostic and monitoring applications of perioperative echocardiography are routinely and systematically performed together, it is a safe and viable tool that significantly affects the decision-making process in the intraoperative care of high-risk patients undergoing primary isolated coronary artery bypass grafting and may contribute to the optimal care of these patients. (duke.edu)
  • Job SummaryResponsible for a variety of technical duties necessary to the acquisition of echocardiographic examinations and maintenance of the normal operation of the adult echocardiography laboratory.Job DutiesCome Join our Heart Institute Team! (cytopathology.org)
  • Guidelines for the echocardiographic assessment of the right heart in adults: a report from the American Society of Echocardiography. (echoright.com)
  • With the paucity of high-quality studies on longitudinal basic critical care echocardiography (BCCE) training, expert-opinion guidelines have guided BCCE training. (bvsalud.org)
  • Echocardiography is the powerhouse of the cardiology and surgical imaging unit, as almost every patient will have at least one scan during their patient journey - and many will have several scans to follow their condition and monitor for any progression, allowing us to alter medication or time intervention appropriately. (rbht.nhs.uk)
  • Our hospital offers echocardiography as one of our many cardiology services. (vcahospitals.com)
  • The purpose of this series is to provide education regarding basic echocardiography and contemporary imaging techniques in cardiology, utilizing lectures, and audio/video presentations. (utsouthwestern.edu)
  • Echocardiography is one of the most commonly used diagnostic imaging modalities in cardiology. (mit.edu)
  • In this study, director of the Sagol Center for Hyperbaric Medicine and Research at Shamir Medical Center Prof. Shai Efrati and Dr. Marina Leitman, head of the Echocardiography Unit and Noninvasive Cardiology Service at Shamir Medical Center, turned their attention to HBOT's impact on cardiac function. (jpost.com)
  • 96 patients with recent acute MI underwent echocardiography at baseline and 6 months later or 3 months after revascularization to determine regional function. (escardio.org)
  • Methods: Sixty-one I-II NYHA class HFpEF patients underwent standard echocardiography, LUS (28-scanning point method), and B-type natriuretic peptide (BNP) assessment during supine exercise echocardiography (baseline and peak exercise). (univ-lorraine.fr)
  • The Echocardiography (Echo) Core Lab is a core laboratory of the Cardiovascular Research Center. (mayo.edu)
  • One of the great things about the heart is that it does provide lots of clues which a good clinician can pick up by careful examination, especially with the use of the stethoscope, but the art of cardiovascular diagnosis was transformed in the 1970s by the advent of echocardiography. (rbht.nhs.uk)
  • Perform reliable echocardiography in mice and other small animals for translational cardiovascular research with in vivo resolution down to 30 microns. (visualsonics.com)
  • They were experts with international reputations in echocardiography and environmental or cardiovascular epidemiology. (cdc.gov)
  • We aimed to investigate the role of preoperative echocardiography in predicting postoperative adverse cardiovascular events (CVEs) in asymptomatic patients undergoing low- risk NCS. (bvsalud.org)
  • Recommendations for cardiac chamber quantification by echocardiography in adults: an update from the American Society of Echocardiography and the European Association of cardiovascular Imaging. (echoright.com)
  • These grants are part of an ongoing effort by the Foundation, in assistance with the Council Steering Committees, to encourage trainees in cardiovascular specialties to focus on the respective echocardiography subspecialty and to recruit enthusiastic new members to the Councils. (asefoundation.org)
  • BACKGROUND: Intraoperative echocardiography is a valuable monitoring and diagnostic technology used in cardiac surgery. (duke.edu)
  • The diagnosis and hemodynamic assessment of most patients with MS is performed noninvasively with echocardiography. (medscape.com)
  • When echocardiography came into routine use for the diagnosis of heart murmurs, lots of patients who had been told what was wrong with them many years earlier discovered that they had something entirely different! (rbht.nhs.uk)
  • There are many factors that contribute to an accurate diagnosis based on echocardiography. (evanhospital.com)
  • They consistently reported that echocardiography is feasible, whether performed by a novice or expert, and frequently resulted in important changes in diagnosis of cardiac abnormalities and their management. (monash.edu)
  • What Role Does Echocardiography Play in PAH Diagnosis? (medscape.com)
  • [ 1 ] These investigators, who are part of an established group of experts in pulmonary arterial hypertension (PAH) wanted to focus on the prevalence of PAH in patients with sickle cell disease and evaluate the role for echocardiography in the diagnosis of PAH. (medscape.com)
  • Recognizecardiac pathology commonly diagnosed by echocardiography such as pericardial disease, Cardiomyopathies, CAD (ischemic disease), pulmonary hypertension and congenital heart disease. (gcus.com)
  • 3. Recognize the congenital abnormalities on Echocardiography. (utsouthwestern.edu)
  • Adult Echocardiography Registry Review - Virtual Conference provides the most comprehensive review with topics based on current ARDMS exam content outlines for successfully completing the adult echocardiography certification exam. (gcus.com)
  • To guarantee the highest industry exam success rate this course is taught by a leading adult echocardiography expert and is specifically designed for physicians, sonographers and other medical professionals who are looking to pass the adult echocardiography registry exam the first time. (gcus.com)
  • The Adult Echocardiography Registry Review Virtual Conference entails interactive lectures, case studies, and live, interactive mock registry exams. (gcus.com)
  • As an added feature, the Gulfcoast Registry Review PASS Guarantee will grant you access to the Adult Echocardiography Online Course for an additional 90 days if you do not pass your registry exam after completing the course or webinar. (gcus.com)
  • Apply knowledge of the cardiac anatomy and corresponding cardiac physiology of the systemic & pulmonary circulation to perform routine scan protocols for adult echocardiography. (gcus.com)
  • Medical professionals who are preparing to take the ARDMS Adult Echocardiography or CCI Cardiac Sonographer registry board exams or individuals who need a comprehensive review for professional improvement and/or CME credits. (gcus.com)
  • Intraoperative echocardiography is indicated in high-risk coronary artery bypass grafting. (duke.edu)
  • METHODS: From March to November 1995, 82 consecutive high-risk patients undergoing coronary artery bypass grafting were studied in a four-stage protocol to determine the efficacy of intraoperative echocardiography in management planning. (duke.edu)
  • Alterations in surgical and anesthetic/hemodynamic management initiated by intraoperative echocardiography findings were documented in addition to perioperative morbidity and mortality. (duke.edu)
  • Mortality and the rate of myocardial infarction in this consecutive high-risk study population using intraoperative echocardiography and in a similar group of patients without the use of intraoperative echocardiography was 1.2% versus 3.8% (not significant) and 1.2% versus 3.5% (not significant), respectively. (duke.edu)
  • Computed tomography may be an adjunct to echocardiography for preprocedural or preoperative planning when mechanical mitral valve malfunction is suspected. (medscape.com)
  • Practical role of preoperative echocardiography in low-risk non-cardiac surgery. (bvsalud.org)
  • Data on the role of preoperative echocardiography in low- risk non- cardiac surgery (NCS) other than ambulatory surgeries do not exist. (bvsalud.org)
  • Preoperative examination data including electrocardiography , chest radiography , and echocardiography were collected. (bvsalud.org)
  • Abnormal findings were observed in 5.0% of patients with preoperative echocardiography . (bvsalud.org)
  • 95% confidence interval , CI 1.21-266.71, P = 0.036), preoperative echocardiography did not significantly predict CVE in multivariate analysis (P = 0.097). (bvsalud.org)
  • Future studies should identify patients undergoing low- risk NCS for whom preoperative echocardiography would be helpful to predict adverse CVE. (bvsalud.org)
  • Doppler echocardiography in elderly patients with ejection systolic murmurs. (bmj.com)
  • The aim of this study was to investigate the accuracy and reproducibility of the quantification of left ventricular (LV) function by real-time 3-dimensional echocardiography (RT3DE) using current state-of-the-art hardware and software. (ajconline.org)
  • Bedside echocardiography may rapidly identify reversible cardiac problems (eg, cardiac tamponade, tension pneumothorax, massive myocardial infarction, severe hypovolemia). (medscape.com)
  • This app sensitizes the neonatologists on bedside echocardiography & trains on basics of echo and some specific conditions like PDA and PPHN. (who.int)
  • In patients with PH echocardiography provides information about right heart dimensions, pulmonary artery pressures, right ventricle systolic and diastolic function and left and right ventricle interdependence. (nih.gov)
  • Echocardiography is also invaluable in identifying right ventricular enlargement, pulmonary hypertension suggestive of pulmonary emboli, and ventricular septal rupture. (medscape.com)
  • A very useful targeted neonatal echocardiography app developed by The Hospital for Sick Children, Toronto, Canada, for IOS platform for free download. (who.int)
  • Because of its extensive experience, the echocardiography "core" laboratory at Mayo Clinic, directed by Dr. Jae K. Oh, was selected to review the echocardiograms. (cdc.gov)
  • Because of its reputation and extensive experience, the echocardiography laboratory at the Mayo Clinic in Rochester, Minn., was chosen to review the study's echocardiograms. (cdc.gov)
  • The purpose of the meeting was to review the methods, results and public health significance of PSM's Vieques Heart Study, considering the echocardiography readings of both PSM and the Mayo Clinic. (cdc.gov)
  • Echocardiography offers an enhanced understanding of cardiac anatomy and physiology. (biomedcentral.com)
  • T ransthoracic echocardiography (TTE), sometimes (LV) translates into a 15-g difference in the estimate of called "surface echocardiography," is a basic tool LV mass.3 A report stating honestly that accurate data for investigation and follow-up of heart disease. (scribd.com)
  • This technology was adapted for use by submarines in the British Navy during the first world war, but later in the 20th century, Inge Edler, now often called the "father of echocardiography", realised that the very same technology could be harnessed to locate moving structures in the heart, such as valves and even the flowing blood itself. (rbht.nhs.uk)
  • The power of echocardiography is the ability to look inside the heart at various structures. (vcahospitals.com)
  • Echocardiography is used to assess different areas of the heart and can detect heart disease or signs of serious conditions. (evanhospital.com)
  • An echocardiography shows if the heart wall or chambers are enlarged and if there are abnormalities of the heart valves. (sgh.com.sg)
  • We advocate the implementation of 3D-printed heart models featuring the standard views for teaching echocardiography. (biomedcentral.com)
  • Despite advances in echocardiography, pulmonary hypertension still requires a right heart catheterization (RHC) demonstrating mean pulmonary arterial pressure ≥ 25 mm Hg at rest for confirmation. (renalandurologynews.com)
  • The small differences between Ponce and Mayo findings were attributed to the limited precision of the trans-thoracic echocardiography measurement technique. (cdc.gov)