Cardiac Volume: 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.Echocardiography, Four-Dimensional: Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (Mayo Clin Proc 1993;68:221-40)Fetal Heart: 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.Echocardiography, Three-Dimensional: 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)Heart: The hollow, muscular organ that maintains the circulation of the blood.Stroke Volume: 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.Myocytes, Cardiac: Striated muscle cells found in the heart. They are derived from cardiac myoblasts (MYOBLASTS, CARDIAC).Cardiac Output: 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).Blood Volume: Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.Cardiac Surgical Procedures: Surgery performed on the heart.Arrhythmias, Cardiac: Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.Death, Sudden, Cardiac: Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)Blood Pressure Monitors: Devices for continuously measuring and displaying the arterial blood pressure.Pressure: A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Ventricular Pressure: 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.Short-Wave Therapy: The use of focused short radio waves to produce local hyperthermia in an injured person or diseased body area.Blood Pressure: PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.Echocardiography, Doppler: 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.Electronic Mail: Messages between computer users via COMPUTER COMMUNICATION NETWORKS. This feature duplicates most of the features of paper mail, such as forwarding, multiple copies, and attachments of images and other file types, but with a speed advantage. The term also refers to an individual message sent in this way.Science: The study of natural phenomena by observation, measurement, and experimentation.Problem-Based Learning: Instructional use of examples or cases to teach using problem-solving skills and critical thinking.Curriculum: A course of study offered by an educational institution.Education, Dental: Use for articles concerning dental education in general.Educational Measurement: The assessing of academic or educational achievement. It includes all aspects of testing and test construction.Fluid Shifts: Translocation of body fluids from one compartment to another, such as from the vascular to the interstitial compartments. Fluid shifts are associated with profound changes in vascular permeability and WATER-ELECTROLYTE IMBALANCE. The shift can also be from the lower body to the upper body as in conditions of weightlessness.Renal Dialysis: Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.Kidney Failure, Chronic: The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.Erythrocyte Count: The number of RED BLOOD CELLS per unit volume in a sample of venous BLOOD.Hemodialysis, Home: Long-term maintenance hemodialysis in the home.Imaging, Three-Dimensional: The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.Image Processing, Computer-Assisted: 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.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Tomography, Spiral Computed: Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.Bandages, Hydrocolloid: Dressings comprised of a self-adhesive matrix to which hydrophilic absorbent particles are embedded. The particles consist of CELLULOSE derivatives; calcium ALGINATES; PECTINS; or GELS. The utility is based on providing a moist environment for WOUND HEALING.Image Interpretation, Computer-Assisted: Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.Plethysmography, Impedance: Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the path of the current. (Stedman, 25th ed)Transducers, Pressure: Transducers that are activated by pressure changes, e.g., blood pressure.Thrombophlebitis: Inflammation of a vein associated with a blood clot (THROMBUS).Anterior Chamber: The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (Cline et al., Dictionary of Visual Science, 4th ed, p109)Electric Impedance: The resistance to the flow of either alternating or direct electrical current.Cardiac Electrophysiology: The study of the electrical activity and characteristics of the HEART; MYOCARDIUM; and CARDIOMYOCYTES.Electrophysiological Processes: The functions and activities of living organisms or their parts involved in generating and responding to electrical charges .BooksElectrophysiologic Techniques, Cardiac: Methods to induce and measure electrical activities at specific sites in the heart to diagnose and treat problems with the heart's electrical system.Epicardial Mapping: Recording the locations and measurements of electrical activity in the EPICARDIUM by placing electrodes on the surface of the heart to analyze the patterns of activation and to locate arrhythmogenic sites.Electrophysiology: The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.Models, Cardiovascular: Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.Coronary Artery Disease: Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.Enflurane: An extremely stable inhalation anesthetic that allows rapid adjustments of anesthesia depth with little change in pulse or respiratory rate.Heart Rate: The number of times the HEART VENTRICLES contract per unit of time, usually per minute.Coronary Vessels: The veins and arteries of the HEART.Coronary Angiography: Radiography of the vascular system of the heart muscle after injection of a contrast medium.

Ventricular pressure-volume curve indices change with end-diastolic pressure. (1/476)

Many indices have been proposed to describee the diastolic pressure-volume curve mathematically and permit quantification of the elastic properties of the myocardium itself in hopes that changes in the muscle caused by disease would b.e reflected in the diastolic pressure-volume curve. To date, none of the proposed indices has been shown convincingly to discriminate one group of patients from another. While this situation in part arises from the relatively large amount of noise introduced by the technical difficulties of measuring synchronous pressures and volumes during diastole in man, ther is a more fundamental difficulty. In practice, one can measure only a short segment of the entire pressure-volume curve, and the values of all diastolic pressure-volume curve parameters investigated change significantly when one uses different segments of the same pressure-volume curve to compute them. These results were derived from relatively noise-free pressure-volume curves obtained by filling nine excised dog left ventricles at a known rate and monitoring pressure-volume curve used to compute the parameter. Merely increasing measurement fidelity will not resolve this problem, because none of these parameters accurately characterizes the entire diastolic pressure-volume curbe from a segment like that which one can reasonably expect to obtain from humans.  (+info)

2,3,7,8-Tetrachlorodibenzo-p-dioxin alters cardiovascular and craniofacial development and function in sac fry of rainbow trout (Oncorhynchus mykiss). (2/476)

Hallmark signs of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) toxicity in rainbow trout sac fry, are yolk sac edema, hemorrhage, craniofacial malformation, and growth retardation culminating in mortality. Our objective was to determine the role of cardiovascular dysfunction in the development of this toxicity. An embryotoxic TCDD dose (385 pg/g egg) caused a progressive reduction in blood flow in rainbow trout sac fry manifested first and most dramatically in the 1st and 2nd branchial arches and vessels perfusing the lower jaw. Blood flow was reduced later in the infraorbital artery and occipital vein of the head as well as segmental vessels and caudal vein of the trunk. Reduced perfusion occurred last in gill branchial arteries involved with oxygen uptake and the subintestinal vein and vitelline vein involved with nutrient uptake. Although heart rate throughout sac fry development was not affected, heart size at 50 days post-fertilization (dpf) was reduced far more than body weight or length, suggesting that the progressive circulatory failure caused by TCDD is associated with reduced cardiac output. Craniofacial development was arrested near hatch, giving rise to craniofacial malformations in which the jaws and anterior nasal structures were underdeveloped. Unlike the medaka embryo, in which TCDD causes apoptosis in the medial yolk vein, endothelial cell death was not observed in rainbow trout sac fry. These findings suggest a primary role for arrested heart development and reduced perfusion of tissues with blood in the early-life stage toxicity of TCDD in trout.  (+info)

Left ventricular function in chronic renal failure. (3/476)

Left ventricular function was studied in 14 patients with end-stage chronic renal failure using non-invasive methods (echocardiography and systolic time intervals). Patients were divided into 3 groups. Group 1 consisted of 5 patients who were normotensive at the time of study and group 2 of 7 patients who were hypertensive when studied. Group 3 consisted of 2 patients: one was receiving propranolol and the other, studied 302 days after renal transplantation, was receiving digitalis for recurrent episodes of cardiac failure. All except the patient receiving propranolol had normal left ventricular function in systole with normal measurements of fractional fibre shortening (% delta S, EF) and normal measurements relating to the velocity of ventricular contraction (mean Vcf, mean velocity of posterior wall motion). Stroke volume and cardiac output were normal in some patients but were increased in patients with fluid overload. Early diastolic compliance of the left ventricle seemed to be normal except in the patient with recurrent cardiac failure. The study provided no evidence for the existence of a specific uraemic cardiomyopathy.  (+info)

Fetal pulmonary venous flow into the left atrium relative to diastolic and systolic cardiac time intervals. (4/476)

OBJECTIVE: To establish the nature and gestational age dependency of the pulmonary venous flow velocity pattern into the left atrium relative to systolic and diastolic phases of the cardiac cycle. DESIGN: This was a cross-sectional study of Doppler measurements of fetal pulmonary venous inflow velocities, which were correlated with simultaneous recordings of transmitral and aortic flow velocity waveforms based on an equal cardiac cycle length (+/- 5%). RESULTS: Successful recordings were obtained in 28 out of 60 (47%) normal singleton pregnancies at 20-36 weeks of gestation. Reproducibility of waveform analysis of the various phases of the cardiac cycle was satisfactory, within-patient variance ranging between 1.7% and 6.5%. A statistically significant increase (p < 0.05) in pulmonary venous time average velocity and velocity integral with advancing gestational age was established. A statistically significant increase (p < 0.05) of the pulmonary flow velocity integral was also found when related to each of the systolic and diastolic segments of the cardiac cycle, with the exception of isovolemic relaxation time. The duration of each of the diastolic and systolic segments of the cardiac cycle, as well as the pulmonary venous velocity integral expressed as a percentage of the cardiac cycle, remained constant with advancing gestational age. CONCLUSIONS: The second half of pregnancy is characterized by pulmonary venous inflow into the left atrium throughout the cardiac cycle. Pulmonary venous inflow into the left atrium occurs predominantly during the filling and ejection phases of the cardiac cycle. Absolute cardiac diastolic and systolic time intervals as well as the percentage distribution of pulmonary venous flow velocity integrals between these cardiac time intervals remain unchanged with advancing gestational age.  (+info)

Familial predisposition of left ventricular hypertrophy. (5/476)

OBJECTIVES: The study evaluated the contribution of familial predisposition to the risk of left ventricular hypertrophy (LVH). BACKGROUND: Left ventricular hypertrophy is a multifactorial condition that serves as an important predictor of cardiovascular mortality. At present it is unclear whether familial predisposition contributes to the manifestation of LVH. Thus, we determined whether siblings of subjects with LVH are at increased risk to present with an elevation of LV mass or an abnormal LV geometry. METHODS: Echocardiographic and anthropometric measurements were performed in 2,293 individuals who participated in the echocardiographic substudies of population-based MONICA Augsburg surveys. In addition, a total of 319 siblings of survey participants with echocardiographic evidence of LVH were evaluated. The risk of these siblings to present with LVH or abnormal LV geometry was estimated by comparison with 636 subjects matched for gender and age that were selected from the entire echocardiography study base. RESULTS: Blood pressure, body mass index, age, and gender (i.e., known determinants of LV mass) were comparable in LVH-siblings and the matched comparison group. However, septal and posterior wall thicknesses, relative wall thickness as well as LV mass index were significantly elevated in LVH-siblings (p < 0.001, each) whereas LV dimensions did not differ. Likewise, the prevalence of LVH was raised in LVH-siblings, as was the relative risk of LVH after adjustment for confounders (p < 0.05). More specifically, LVH-siblings displayed increased prevalences of concentric remodeling and concentric LVH (p < 0.05) but not of eccentric LVH. CONCLUSIONS: Familial predisposition appears to contribute to increased LV wall thickness, to the development of LV hypertrophy and abnormal LV geometry.  (+info)

Role of cardiac structural and functional abnormalities in the pathogenesis of hyperdynamic circulation and renal sodium retention in cirrhosis. (6/476)

The aim of this study was to assess the relationship between subtle cardiovascular abnormalities and abnormal sodium handling in cirrhosis. A total of 35 biopsy-proven patients with cirrhosis with or without ascites and 14 age-matched controls underwent two-dimensional echocardiography and radionuclide angiography for assessment of cardiac volumes, structural changes and systolic and diastolic functions under strict metabolic conditions of a sodium intake of 22 mmol/day. Cardiac output, systemic vascular resistance and pressure/volume relationship (an index of cardiac contractility) were calculated. Eight controls and 14 patients with non-ascitic cirrhosis underwent repeat volume measurements and the pressure/volume relationship was re-evaluated after consuming a diet containing 200 mmol of sodium/day for 7 days. Ascitic cirrhotic patients had significant reductions in (i) cardiac pre-load (end diastolic volume 106+/-9 ml; P<0.05 compared with controls), due to relatively thicker left ventricular wall and septum (P<0.05); (ii) afterload (systemic vascular resistance 992+/-84 dyn.s.cm(-5); P<0. 05 compared with controls) due to systemic arterial vasodilatation; and (iii) reversal of the pressure/volume relationship, indicating contractility dysfunction. Increased cardiac output (6.12+/-0.45 litres/min; P<0.05 compared with controls) was due to a significantly increased heart rate. Pre-ascitic cirrhotic patients had contractile dysfunction, which was accentuated when challenged with a dietary sodium load, associated with renal sodium retention (urinary sodium excretion 162+/-12 mmol/day, compared with 197+/-12 mmol/day in controls; P<0.05). Cardiac output was maintained, since the pre-load was normal or increased, despite a mild degree of ventricular thickening, indicating some diastolic dysfunction. We conclude that: (i) contractile dysfunction is present in cirrhosis and is aggravated by a sodium load; (ii) an increased pre-load in the pre-ascitic patients compensates for the cardiac dysfunction; and (iii) in ascitic patients, a reduced afterload, manifested as systemic arterial vasodilatation, compensates for a reduced pre-load and contractile dysfunction. Cirrhotic cardiomyopathy may well play a pathogenic role in the complications of cirrhosis.  (+info)

Patterns of body fat deposition in youth and their relation to left ventricular markers of adverse cardiovascular prognosis. (7/476)

The patterns of body fat deposition in healthy youth and their relation to future development of cardiovascular disease remain incompletely understood. To further evaluate these patterns, we measured indirect indexes of central and general fat deposition in healthy adolescents (mean age 15.4+/-2.3 years) with family histories of hypertension. We examined the relation between these indexes and echocardiographic markers of adverse prognosis as well as the effect of gender and ethnicity. All 225 subjects (64% black and 48% female) had > or =1 biologic parent and 1 grandparent with hypertension. Skinfold thicknesses, waist-to-hip girth ratio, Quetelet index, Ponderal index, conicity, and Z score weight - Z score height were measured. Left ventricular (LV) mass, indexed LV mass, relative wall thickness (RWT), and midwall fractional shortening (MFS) were determined using echocardiography. In both black and white subjects, the adiposity indexes were significantly correlated with posterior wall thickness, total LV mass, and indexed LV mass (p <0.05 for all). Additionally, in black subjects, central adiposity was inversely related to MFS and directly related to RWT and septal thickness. General adiposity independently predicted indexed and nonindexed LV mass, whereas central adiposity predicted MFS and RWT. Compared with subjects with normal LV geometry, those with abnormal geometry were heavier and fatter based on every index of obesity (p <0.03 for all). Thus, indexes of fat deposition are significantly correlated with LV markers of adverse prognosis in healthy youth.  (+info)

Changes in left ventricular filling and left atrial function six months after nonsurgical septal reduction therapy for hypertrophic obstructive cardiomyopathy. (8/476)

OBJECTIVES: The purpose of this study was to evaluate changes in left ventricular (LV) filling, left atrial (LA) volumes and function six months after nonsurgical septal reduction therapy (NSRT) for hypertrophic obstructive cardiomyopathy (HOCM). BACKGROUND: Patients with HOCM frequently have enlarged left atria, which predisposes them to atrial fibrillation. Nonsurgical septal reduction therapy results in significant reduction in left ventricular outflow tract (LVOT) obstruction and symptomatic improvement. However, its effect on LV passive filling volume, LA volumes and function is not yet known. METHODS: Thirty patients with HOCM underwent treadmill exercise testing as well as 2-dimensional and Doppler echocardiography before and six months after NSRT. Data included clinical status, exercise duration, LVOT gradient, mitral regurgitant (MR) volume, LV pre-A pressure and LA volumes. Left atrial ejection force and kinetic energy (KE) were computed noninvasively and were compared with 12 age-matched, normal subjects. RESULTS: New York Heart Association (NYHA) class was lower and exercise duration was longer (p < 0.05) six months after NSRT. The LVOT gradient, MR volume and LV pre-A pressure were all significantly reduced. HOCM patients had larger atria, which had a higher ejection force and KE, compared with normal subjects (p < 0.01). After NSRT, LV passive filling volume increased (p < 0.01), whereas LA volumes, ejection force and KE decreased (p < 0.01). Reduction in LA maximal volume was positively related to changes in LV pre-A pressure (r = 0.8, p < 0.05) and MR volume (0.4, p < 0.05). Changes in LA ejection force were positively related to changes in LA pre-A volume (r = 0.7, p < 0.01) and KE (r = 0.81, p < 0.01). The increase in exercise duration paralleled the increase in LV passive filling volume (r = 0.85, p < 0.05). CONCLUSIONS: Nonsurgical septal reduction therapy results in an increase in LV passive filling volume and a reduction in LA size, ejection force and KE.  (+info)

*Frank-Starling law

As a larger volume of blood flows into the ventricle, the blood stretches the cardiac muscle fibers, leading to an increase in ... represents the relationship between stroke volume and end diastolic volume. The law states that the stroke volume of the heart ... MAESTRINI, D. (December 1958). "[Variations of cardiac volume dynamics in clinical practice, examined in the light of the law ... The decreased end-diastolic volume then leads to a reduction in stroke volume because of the Frank-Starling mechanism. The ...

*Strain rate imaging

Movements of the base of the ventricle and relative constancy of the cardiac volume. Am J Physiol 1932;102:559-65. Hoffman EA, ... Invariant total heart volume in the intact thorax. Am J Physiol 1985;249:883-90. Stoylen A, Heimdal A Bjornstad K, Wiseth R, ... It has an advantage over Ejection fraction (EF), it shows reduced cardiac function also in hypertrophic hearts with small ... In stress echocardiography (see Cardiac stress test), the regional dysfunction due to ischemia will become evident when the ...

*Cardiac magnetic resonance imaging

These volumetric scans capture multidirectional flow values anywhere within the imaged volume throughout the cardiac cycle, ... Initial attempts to image the heart were confounded by respiratory and cardiac motion, solved by using cardiac ECG gating, ... acquiring the entire cardiac volume at once. The key advantages are image quality, non-invasiveness, accuracy, versatility and ... cardiac ultrasound) cannot provide sufficient diagnostic information, 2) as an alternative to diagnostic cardiac ...

*Physical exercise

Specifically, high cardiac output has been shown to cause enlargement of the left and right ventricle volumes, increased ... Both aerobic and anaerobic exercise work to increase the mechanical efficiency of the heart by increasing cardiac volume ( ... Benito B, Gay-Jordi G, Serrano-Mollar A, Guasch E, Shi Y, Tardif JC, Brugada J, Nattel S, Mont L (2011). "Cardiac ... Another danger is overtraining, in which the intensity or volume of training exceeds the body's capacity to recover between ...

*Constrictive pericarditis

Echocardiography - the principal echographic finding is changes in cardiac chamber volume. CT and MRI - useful in select cases ... BNP blood test - tests for the existence of the cardiac hormone brain natriuretic peptide, which is only present in RCMP but ... not in CP Conventional cardiac catheterization Physical examination -can reveal clinical features including Kussmaul's sign and ...

*Reduced muscle mass, strength and performance in space

A significant decrement in cardiac stroke volume was associated with diminished exercise tolerance. It was not clear whether ... This, the observed diminished stroke volume (cardiac output) is certainly contributory and, in turn, is a reflection of ... and minute volume) measurements were made. For Apollo 15 to 17 missions, cardiac output measurements were obtained by the ... and then summing the segment volumes to obtain the volume of each extremity. The second study included the first muscle ...

*Pressure overload

Cardiac failure Afterload Volume overload Graham, T. P.; Lewis, B. W.; Jarmakani, M. M. (1970). "Left Heart Volume and Mass ... Pressure overload refers to the pathological state of cardiac muscle in which it has to contract while experiencing an ... Chronic pressure overload leads to concentric hypertrophy of the cardiac muscle, which can in turn lead to heart failure, ...

*Mica Endsley

Pediatric and Congenital Cardiac Care: Volume 2: Quality Improvement and Patient Safety. Springer. pp. 94-. ISBN 978-1-4471- ...

*Sodium thiopental

... decreases the cardiac stroke volume, which results in a decrease in cardiac output. The decrease in cardiac ... A coma is first induced by intravenous administration of 20 mg/kg thiopental sodium (Nesdonal) in a small volume (10 ml ... This pulmonary edema was not mediated by cardiac failure or by pulmonary hypertension but was due to increased pulmonary ...

*Admittance and conductance in cardiac performance

June 1981). "Continuous stroke volume and cardiac output from intra-ventricular dimensions obtained with impedance catheter". ... Gm is the measured conductance of the cardiac muscle (unwanted signal) Cm is the measured capacitance of the cardiac muscle ω ... of the electrical field and the dynamic nature of the cardiac cycle to give a more accurate representation of the blood volume ... Blood conductance can then be converted to volume using a linear (Baan) or a non-linear (Wei) relationship that relates ...

*Fixation (histology)

The fixative is injected into the heart with the injection volume matching cardiac output. The fixative spreads through the ... Immersion: The sample of tissue is immersed in fixative solution of volume at a minimum of 20 times greater than the volume of ... 1-4 mm thickness [0.5 cm] At least 15-20 times greater than tissue volume Increasing the temperature increases speed of ... but the disadvantages are that the subject dies and the cost of the volume of fixative needed for larger organisms is high. In ...

*Pulsus paradoxus

Guntheroth W, Morgan B, Mullins G (1967). "Effect of respiration on venous return and stroke volume in cardiac tamponade. ... Anatomically, these can be grouped into: cardiac causes, pulmonary causes and non-pulmonary and non-cardiac causes. Considered ... allows for the further reduction in volume, so cardiac output is reduced, leading to a further decline in BP. However, in ... reducing maximum volume. Reduced left-heart filling leads to a reduced stroke volume which manifests as a decrease in systolic ...

*Physiological response to water immersion

Plasma volume, stroke volume, and cardiac output remain higher than normal during immersion. The increased respiratory and ... cardiac workload causes increased blood flow to the cardiac and respiratory muscles. Stroke volume is not greatly affected by ... Lung volume decreases in the upright position due to cranial displacement of the abdomen due to hydrostatic pressure, and ... The fluid shift is largely from the extravascular tissues and the increased atrial volume results in a compensatory diuresis. ...

*Bainbridge reflex

Increased blood volume is detected by stretch receptors (Cardiac Receptors) located in both atria at the venoatrial junctions. ... "Effects on cardiac contractility and stroke volume are insignificant." The Bainbridge reflex and the baroreceptor reflex ... Increased blood volume results in increased venous return to the heart, which leads to increased firing of B-fibers. B-fibers ... In contrast, the Bainbridge reflex responds to changes in blood volume. The Bainbridge reflex is seen in dogs, but experiment ...

*Decatur Memorial Hospital

As of 2011, Fitch Ratings had stated that DMH's "weak profitability is a loss of market share in cardiac volume when its main ...

*Pressure-volume loop analysis in cardiology

This increases the contractile force of the cardiac muscle, resulting in increased stroke volume. Frank-Starling curves can be ... The increased ventricular stroke volume in this case includes the volume of blood ejected into the aorta as well as the volume ... Therefore, because end-diastolic volume decreases more than end-systolic volume decreases, the stroke volume decreases. Aortic ... end-systolic volume VED = end-diastolic volume V0 - theoretical volume when no pressure is generated There is a highly linear ...

*Continuous noninvasive arterial pressure

Further, the mathematical analysis of CNAP pulse waves enables the noninvasive estimation of stroke volume and cardiac output. ... As the volume of the finger artery is clamped on a constant diameter, the method is also known as "Volume Clamped Method". The ... Pulse oximeters can measure finger blood volume changes using light. These volume changes must be transformed into pressure, ... further pulse wave analysis provides additional cardiovascular parameters such as stroke volume, cardiac output and arterial ...

*Robert S. Poston

Poston's first year despite decreasing cardiac surgical volumes across the city. Operating times, length of stay in the ... The program grew quickly and cardiac surgical volumes significantly increased during Dr. ... The cardiac program results as reported to MASS-DAC, the state registry of CABG results, were recognized in 2009 by the Society ... Poston came to Boston Medical Center as the chief of Cardiac Surgery with a very aggressive plan to establish a program in ...

*Channichthyidae

... cardiac stroke volume, and power output. The presence of nitric oxide also can increase angiogenesis, mitochondrial biogenesis ... The high blood volume of icefishes is itself evidence that the loss of hemoglobin and myoglobin was not advantageous for the ... To compensate for the loss of hemoglobin, they have larger blood vessels (including capillaries), greater blood volumes (four ... This repeated loss suggests that cardiac myoglobin might be vestigial or even detrimental to icefishes. Sidell and O'Brien ( ...

*List of MeSH codes (G09)

... cardiac output MeSH G09.330.553.400.280.882 --- stroke volume MeSH G09.330.553.400.330 --- cardiac volume MeSH G09.330.553.400. ... blood volume MeSH G09.330.553.400.214.370 --- erythrocyte volume MeSH G09.330.553.400.214.610 --- plasma volume MeSH G09.330. ... blood volume MeSH G09.188.250.313.370 --- erythrocyte volume MeSH G09.188.250.313.610 --- plasma volume MeSH G09.188.250.340 ... expiratory reserve volume MeSH G09.772.765.850.390.820 --- residual volume MeSH G09.772.765.850.970 --- vital capacity MeSH ...

*Cardiovascular physiology

... end-diastolic volume - end-systolic volume) Ejection fraction (= stroke volume / end-diastolic volume) ((Cardiac Output)) is ... end-systolic volume + end-diastolic volume) Injection fraction (=suction volume / end-systolic volume) Cardiac input is ... Cardiac output (= heart rate * stroke volume. Can also be calculated with Fick principle.) Stroke volume (= ... heart Electrocardiogram Cardiac marker Cardiac action potential Frank-Starling law of the heart Wiggers diagram Pressure volume ...

*Biofluid dynamics

He also perfected optical manometers and capsules for the precise measurement of intra-cardiac pressures and volumes. A fluid ... In addition to these 55 to 60 percent of blood by volume consists of plasma. Plasma is the transparent, amber-colored liquid in ... In addition to the rate of shearing strain, the viscosity of blood is also dependent on temperature and on the volume ... for the same particle volume fraction. This is due to the fact that red blood cells can accommodate by deforming in order to ...

*Digitalis

Ultimately, digitalis increases cardiac output (Cardiac Output=Stroke Volume x Heart Rate). This is the mechanism that makes ... It is used to increase cardiac contractility (it is a positive inotrope) and as an antiarrhythmic agent to control the heart ... Digitalis also has a vagal effect on the parasympathetic nervous system, and as such is used in re-entrant cardiac arrhythmias ... The use of D. purpurea extract containing cardiac glycosides for the treatment of heart conditions was first described in the ...

*Pressure-volume loop experiments

"Measurement of cardiac function using pressure-volume conductance catheter technique in mice and rats". Nature Protocols. 3 (9 ... The volume at this point is the correction volume. Admittance techniques offer an alternative to the saline bolus as a means of ... It is only valid for volumes where the diameter of that volume is less than the distance between the measuring electrodes.) The ... For example, the end-diastolic pressure-volume relationship (EDPVR) and end-systolic pressure-volume relationship (ESPVR) are ...

*Cardiovascular fitness

... stroke volume, cardiac output, and maximal oxygen consumption. Understanding the relationship between cardiorespiratory ... stroke volume is improved, and the blood bed becomes more able to adapt readily to varying demands. Each of these results of ...

*Obstetric ultrasonography

... volume evaluation, fetal lung maturity, and general fetus well being. Second-trimester ultrasound screening for aneuploi- dies ... including number of amnionic sacs and chorionic sacs for multiple gestations Fetal cardiac activity Fetal position relative to ... including number of amnionic sacs and chorionic sacs for multiple gestations Embryonic/fetal cardiac activity Assessment of ... including site of umbilical cord insertion when possible Amnionic fluid volume Gestational age assessment Fetal weight ...
PURPOSE: To compare cardiac cine MR imaging using steady state free precession (SSFP) and fast low angle shot (FLASH) techniques at 1.5 and 3 T, and to establish their variabilities and reproducibilities for cardiac volume and mass determination in volunteers. To assess the feasibility of SSFP imaging in patients at 3 T and to determine comparability to volume data acquired at 1.5 T. MATERIALS AND METHODS: Ten healthy volunteers underwent cardiac magnetic resonance imaging using SSFP and segmented gradient-echo FLASH, using both a 1.5 and a 3 T MR system on the same day. Ten patients with impaired left ventricular (LV) function were also studied at both field strengths with SSFP. RESULTS: For both SSFP and FLASH, field strength had no effect on the quantification of LV and right ventricular (RV) volumes, mass, or function (P | or = 0.05 for field strength for all parameters). At both 1.5 and 3 T, SSFP yielded smaller LV mass (e.g., at 3 T 109 +/- 30 g vs. 142 +/- 37 g; P = 0.011) and larger LV volume (e
Total deaths from heart disease, stroke, diabetes and hypertension - known collectively as cardiometabolic disease, the leading cause of preventable death worldwide - have been increasing since 2011.
Anatomic validation of a novel method for left ventricular volume and mass measurements with use of real-time 3-dimensional echocardiography.
The paper describes an experimental activity on the spatial and temporal liquid- and vapor-phase distributions of diesel fuel at engine-like conditions. The influence of the k-factor (0 and 1.5) of a single-hole axial-disposed injector (0.100 mm diameter and 10 L/d ratio) has been studied by spraying fuel in an optically-accessible constant-volume combustion vessel. A high-speed imaging system, capable of acquiring Mie-scattering and Schlieren images in a near simultaneous fashion mode along the same line of sight, has been developed at the Michigan Technological University using a high-speed camera and a pulsed-wave LED system. The time resolved pair of schlieren and Mie-scattering images identifies the instantaneous position of both the vapor and liquid phases of the fuel spray, respectively. The studies have been performed at three injection pressures (70, 120 and 180 MPa), 23.9 kg/m3 ambient gas density and 900 K gas temperature in the vessel ...
The paper describes an experimental activity on the spatial and temporal liquid- and vapor-phase distributions of diesel fuel at engine-like conditions. The influence of the k-factor (0 and 1.5) of a single-hole axial-disposed injector (0.100 mm diameter and 10 L/d ratio) has been studied by spraying fuel in an optically-accessible constant-volume combustion vessel. A high-speed imaging system, capable of acquiring Mie-scattering and Schlieren images in a near simultaneous fashion mode along the same line of sight, has been developed at the Michigan Technological University using a high-speed camera and a pulsed-wave LED system. The time resolved pair of schlieren and Mie-scattering images identifies the instantaneous position of both the vapor and liquid phases of the fuel spray, respectively. The studies have been performed at three injection pressures (70, 120 and 180 MPa), 23.9 kg/m3 ambient gas density and 900 K gas temperature in the vessel ...
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Left heart volumes were determined angiographically in 50 subjects of whom 18 had no abnormality of the left heart, 12 had lesions causing pressure overload of the left ventricle, and 20 had lesions causing volume overload of the left ventricle. The left heart volumes were in the normal range in the presence of pressure overload, but, with volume overload, end-diastolic, end-systolic, and atrial volumes were in excess of normal. A linear relationship was demonstrated between end-diastolic and end-systolic volumes, regardless of the pressure load on the ventricle. Thus, for all but one of the cases studied, total left ventricular ejection volume formed a nearly constant proportion of end-diastolic volume.. ...
Measurement of acute serial changes in left ventricular volume is often desirable. Although left ventricular volumes estimated echocardiographically correlate well with results of angiographic methods, the sensitivity with which echocardiography can detect acute alterations in volume is unknown. Accordingly, the effect on transverse left ventricular dimension of interventions known to alter left ventricular volume (tilting and administration of nitroglycerin and phenylephrine) was studied in six normal subjects. Tilting significantly reduced end-diastolic dimension (from 48 ± 1.7 to 41.8 ± 1.5 mm, P , .01) and end-systolic dimension (from 32.2 ± 0.6 to 27.5 ± 0.8 mm, P , .001). Nitroglycerin also reduced end-diastolic dimension (from 44.8 ± 2.3 to 39.8 ± 2.1 mm, P , .02) and end-systolic dimension (from 30.2 ± 1.3 to 26.5 ± 1.2, P , .005). In contrast, phenylephrine increased end-diastolic dimension (from 42.3 ± 2.6 to 45.6 ± 2.6 mm, P , .025) but did not significantly alter ...
Semantic Scholar extracted view of Abstract 260: Quantitative Evaluation of Right Ventricular Volume and Its Ejection Fraction by 320 Slice Computed Tomography Compared With Three Dimensional Echocardiogram by Maiko Takahashi et al.
Total deaths from heart disease, stroke, diabetes and hypertension-known collectively as cardiometabolic disease-have been increasing since 2011, a new Northwestern Medicine study shows. Cardiometabolic disease is the ...
Experimental characterization of the burning behavior of gaseous mixtures has been carried out, analyzing spherical expanding flames. Tests were performed in the Device for Hydrogen-Air Reaction Mode Analysis (DHARMA) laboratory of Istituto Motori-CNR. Based on a high-pressure, constant-volume bomb, the activity is aimed at populating a systematic database on the burning properties of CH4, H2 and other species of interest, in conditions typical of internal combustion (i.c.) engines and gas turbines. High-speed shadowgraph is used to record the flame growth, allowing to infer the laminar burning parameters and the flame stability properties. Mixtures of CH4, H2 and air have been analyzed at initial temperature 293÷305 K, initial pressure 3÷18 bar and equivalence ratio = 1.0. The amount of H2 in the mixture was 0%, 20% and 30% (vol.). The effect of the initial pressure and of the Hydrogen content on the laminar burning velocity and the Markstein length has been evaluated: the relative weight and mutual
Cardiovascular magnetic resonance imaging (CMR), sometimes known as cardiac MRI, is a medical imaging technology for the non-invasive assessment of the function and structure of the cardiovascular system. It is derived from and based on the same basic principles as magnetic resonance imaging (MRI) but with optimization for use in the cardiovascular system. These optimizations are principally in the use of ECG gating and rapid imaging techniques or sequences. By combining a variety of such techniques into protocols, key functional and morphological features of the cardiovascular system can be assessed. In the investigation of cardiovascular disease the physician has a wide variety of tools available. The key disadvantages of CMR are limited availability, expense, and special skills/technical training needed to perform CMR (vs other types of MRI). New volumetric acquisitions can shorten and simplify the scan as they can replace several sequences, acquiring the entire cardiac volume at once. The ...
The value of the end systolic volume depends on the arterial blood pressure as well as on the force of ventricular contraction. The arterial blood pressure - especially in the large arteries leaving the heart - is not only pressure outwards against the arterial walls but also back pressure against the aortic valve and the pulmonary valve exerted by the arterial blood. An increased arterial blood pressure results in higher end systolic volume because of more afterload (more resistance to the outflow of blood from the ventricles). Contractility of the ventricular muscle can increase (e.g. from increased stimulation of the heart by the sympathetic nervous system), thereby causing more complete ejection of blood from the ventricle and a resultant lower end systolic volume. ...
The paper describes an experimental activity on the spatial and temporal liquid- and vapor-phase distributions of diesel fuel at engine-like conditions. The influence of the k-factor (0 and 1.5) of a single-hole axial-disposed injector (0.100 mm diameter and 10 L/d ratio) has been studied by spraying fuel in an optically-accessible constant-volume combustion vessel.A high-speed imaging system, capable of acquiring Mie-scattering and Schlieren images in a near simultaneous fashion mode along the same line of sight, has been developed at the Michigan Technological University using a high-speed camera and a pulsed-wave LED system. The time resolved pair of schlieren and Mie-scattering images identifies the instantaneous position of both the vapor and liquid phases of the fuel spray, respectively. The studies have been performed at three injection pressures (70, 120 and 180 MPa), 23.9 kg/m3 ambient gas density and 900 K gas temperature in the vessel. A pre-combustion of reactants filling the vessel ...
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The purpose of this article is to present our experience with normal and abnormal fetal cardiac structures reconstructed in the HDlive silhouette mode (GE Healthcare Japan, Tokyo, Japan) with spatiotemporal image correlation (STIC). Twenty-two fetuses with normal hearts and 1 fetus with a congenita...
Real-time three-dimensional echocardiography for determining right ventricular stroke volume in an animal model of chronic right ventricular volume overload.
In the present study, the right ventricles of 10 Beagle dogs were investigated by means of 3DE and CCT in comparison with the reference method CMRI. The major challenge for determining right ventricular volume is the right ventricle itself. The complex shape with its segmentation in body, inflow and outflow tract, the thin RV wall and the heavy trabeculation make the RV measurement in two-dimensional echocardiography difficult [6]. CMRI is the gold standard for RV volumetric quantification in human medicine [18] and overcomes the limitation of 2D echocardiography by using a three-dimensional volume set, as well as the 3D modalities 3DE and CCT. Although the assessment of left ventricular function using two- and three-dimensional volume estimation is part of various veterinary publications [27]-[30], there are to the best knowledge of the author no veterinary studies concerning the evaluation of right ventricular function either by means of two-dimensional volume calculation or even ...
Purpose:To compare indexed right ventricular (RV) end-diastolic volume (RVEDVi) and the ratio of RV volume to left ventricular (LV) volume (RV/LV ratio) in prediction of significant pulmonary regurgitation (PR) after tetralogy of Fallot (TOF) repair
LONDON - In the past year, total sales of heart failure (HF) therapeutics across the 7 major markets (including Japan, the US and 5EU) were estimated at around USD 3.2 billion. This figure is predicted to increase in the years to come, registering a 13.5% CAGR. By 2025, total heart failure therapeutics sales across 7MM are likely to touch USD 11.5 billion.. Meantime, the chronic heart failure therapeutics market across 7MM is expected to increase from USD 3.1 billion in the previous year up to USD 10.1 billion by 2025, posting a CAGR of 12.7%. In 2015, the US dominated the chronic heart failure therapies market, accounting for a share of over 60% of total sales. The uptake of Novartis Entresto is anticipated to perform as a strong driver of the chronic heart failure and also total heart failure markets in the 7MM; in 2022 it will likely reach peak sales worth of USD 5.9 billion.. The acute heart failure therapeutics market is expected to grow from USD 188.1 million in the past year to around ...
By combining conventional methods for recording pressures from the left ventricle and pleural cavity with a new procedure for estimating end-diastolic volume (EDV) and end-systolic volume (ESV) of the left ventricle it was found in the closed-chest dog that plethora increased EDV, ESV and stroke volume while hemorrhage had the opposite effect. There were linear relationships between EDV and ESV, and between EDV and stroke volume. There was little change in left ventricular "effective" end-diastolic pressure when the EDV changed over a wide range, beginning with the smallest EDV consistent with life; but after a certain large EDV had been reached, large increases in effective end-diastolic pressure were associated with little or no further increase in EDV.. ...
TY - JOUR. T1 - Three-dimensional echocardiography for left ventricular quantification: fundamental validation and clinical applications. AU - van der Heide, J.A.. AU - Kleijn, S.A.. AU - Aly, M.F.A.. AU - Slikkerveer, J.. AU - Kamp, O.. PY - 2011. Y1 - 2011. U2 - 10.1007/s12471-011-0160-y. DO - 10.1007/s12471-011-0160-y. M3 - Article. VL - 19. SP - 423. EP - 431. JO - Netherlands Heart Journal. JF - Netherlands Heart Journal. SN - 1568-5888. IS - 10. ER - ...
Robert M. Hansen, Christian E. Viquerat, Michael A. Matthay, Jeanine P. Wiener-Kronish, Teresa DeMarco, Satinder Bahtia, James D. Marks, Elias H. Botvinick, Kanu Chatterjee; Poor Correlation Between Pulmonary Arterial Wedge Pressure and Left Ventricular End-diastolic Volume after Coronary Artery Bypass Graft Surgery. Anesthesiology 1986;64(6):764-770. Download citation file:. ...
BACKGROUND: Whether the myocardium in nonischemic heart failure experiences oxygen limitation remains a long-standing controversy. We addressed this question in patients with dilated cardiomyopathy (DCM) using a dual approach. First, we tested the changes in myocardial oxygenation between rest and stress states, using oxygenation-sensitive cardiovascular magnetic resonance. Second, we sought to assess the functional consequences of oxygen limitation at rest by measuring myocardial energetics before and after short-term oxygen supplementation. METHODS AND RESULTS: Twenty-six subjects (14 DCM and 12 normal) underwent cardiac magnetic resonance imaging at 3 Tesla to assess cardiac volumes, function, oxygenation, and first-pass perfusion (0.03 mmol/kg Gd-DTPA bolus) at stress and rest (4-6 minutes IV adenosine, 140 μg/kg per minute). Signal intensity change (SIΔ) and myocardial perfusion reserve index (MPRI) were measured from oxygenation and perfusion images, respectively. Furthermore, the effect of
The assessment of left ventricular (LV) volume and ejection fraction (EF) is vital to the practice of cardiology. These measures are used to inform prognosis in most cardiac patient populations, determine treatment decisions for a variety of therapies, and function as eligibility criteria in many clinical trials (1-5). Despite their importance, there is no consensus on the best method to routinely measure EF and volumes.. Two-dimensional echocardiography (2DE) is the most ubiquitous tool for assessing LV size and systolic function. Measurement of EF is the most common reason for referring a patient for an echocardiogram (6). This test is noninvasive, portable, inexpensive, radiation free, and quick. It does not, however, provide reliable, reproducible, and accurate measures of EF or volumes (7). Traditionally, 2DE has used the method of disks to calculate LV volumes based on areas in only 2 imaging planes (6). This method is subject to errors due to foreshortening, poor endocardial definition, ...
In 10 normal dogs, the right and left ventricular volumes and compliances were determined in the fresh post-mortem heart. With the use of a SigmaMotor pump, Ringers solution at 23°C was simultaneously infused into both ventricles within an hour after death. When the ventricles were full but open to atmospheric pressure, the mean volumes were 35.8 ml/m2 for the right and 23.1 ml/m2 for the left ventricle; when the transmural pressure was increased by 10 mm Hg, the mean volumes were 56.9 ml/m2 for the right and 41.9 ml/m2 for the left ventricle; at 20 mm Hg, the values were 60.8 and 48.5 ml/m2, respectively. The initial volumes and the increases in volume produced by increase in transmural pressure were affected by the position of the ventricular septum and by the presence of rigor mortis. With infusions into only one ventricle, right and left ventricular volumes were 20 to 74% greater at 10 mm Hg than the values when both ventricles were filled simultaneously. Compliance began to decrease 40 to ...
ABSTRACT: Ventricular pressure-volume area (PVA) is a specific area in the pressure-volume diagram, which represents the total mechanical energy generated by each contraction, consisting of stroke work and mechanical potential energy at end-systole. Animal experiments have shown that PVA is correlated linearly with the ventricular oxygen consumption (Vo2) per beat under a variety of loading conditions in a stable contractile state. The slope of the Vo2-PVA line has been shown to remain constant in different contractile states, implying a constant stoichiometry between Vo2 and PVA. As a first step to understand the nature of this Vo2-PVA relation, we devised a new crossbridge (CB) model to theoretically relate PVA with the total enthalpy change associated with the ATP hydrolysis for all CB cycles. One of the most important assumptions on which this model analysis depended was that the time-varying elasticity model could simulate the instantaneous pressure-volume relation. The result of this ...
Data & statistics on Relationship between heart rate and oxygen consumption: Relationship between heart rate and oxygen consumption, Cardioplegia volume ( A ) , total heart oxygen consumption (LV MVO,, in milliliters of oxygen; B), and arterial-venous oxygen content diferences (C) during each delivey interval. Duration of induction was 5 minutes at 4
Effects of new single-nucleotide polymorphisms (SNPs) on genome-wide association study results. In both cases, the phenotype being used is total heart weight af
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In the professional opinion of one person who I was reading the confusion on the subject of kettlebells vs. dumbbells comes from a lack of proper instruction regarding how to practice with kettlebells. As a direct result many people make the critical mistake of attempting to use kettlebells as if they were traditional weights.. Traditional weight lifting is what is single-plane static. This refers to how your body is in a fixed position while moving weight towards and away from you in a linear manner through a direct line of applied force. All the while attempting not to use any momentum and targeting an isolated muscle or muscle group. Whats more traditional weight lifting builds muscles differently. Generally speaking the goal of bodybuilding is muscle hypertrophy meaning an increase in muscle size. Unfortunately most people associate size with strength. What most people do not know is that 50-70-percent of hypertrophy size is from fluid called Sarcoplasm. Sarcoplasmic Volume accounts for ...
Biography: Dr. Teeters research focuses on image-based orthopedic implant design and evaluation, including 3D printing technologies and imaging techniques such as micro-CT, CT, RSA, and single-plane fluoroscopy. He has a particular interest in implant wear, and directs the Implant Retrieval Laboratory at LHSC. ...
Eventbrite - ADInstruments Limited presents Pressure-Volume Techniques & Analysis Practical Workshop, Prague: Day 1 - Thursday, 22 June 2017 at IKEM. Find event and registration information.
The LogoRevealer volume in the Motion Design Elements Collection comes onscreen, covers a predefined area and then animates offscreen to reveal something underneath. This volume can be used to reveal not only text but logos and other graphics as well ...
TY - JOUR. T1 - Reference range for fetal interventricular septum area by means of four-dimensional ultrasonography using spatiotemporal image correlation. AU - Nardozza, Luciano Marcondes Machado. AU - Rolo, Liliam Cristine. AU - Araujo Júnior, Edward. AU - Hatanaka, Alan Roberto. AU - Rocha, Luciane Alves. AU - Simioni, Christiane. AU - Ruano, Rodrigo. AU - Moron, Antonio Fernandes. PY - 2013/1/1. Y1 - 2013/1/1. N2 - Objective: To determine reference range for fetal interventricular septum area by means of 3-dimensional ultrasonography (3DUS) using the spatiotemporal image correlation (STIC) method. Methods: A prospective, cross-sectional study was conducted on 328 normal pregnant women between the 18th and 33rd gestational weeks. To obtain the interventricular septum area, a virtual plane was used, with the green line (region of interest) adjacent to the external margin of the septum, which was manually delimited. To evaluate the correlation of the septum area with the gestational age, ...
Milani, R. V., Davis, C. T., Lavie, C. J. and Mehra, M. R. (2005). Importance of left atrial volume in predicting reduced peak aerobic capacity in advanced systolic dysfunction. In: Journal of Heart and Lung Transplantation. , , (S129-S130). . doi:10.1016/j.healun.2004.11.292 ...
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
The functions of neurons and the nervous system can be understood through an analogy (the parallel conductance model) with electrical circuits. This chapter provides an introduction to the electrical terms and concepts that undergird this analogy. It begins with brief descriptions of the components that make up electrical circuits; namely, batteries, resistors, conductors, and capacitors. The basic quantities that describe these circuits are current, voltage, resistance, and capacitance. Ohms law is introduced and together with Kirchhoffs rules, applied to electrical circuits constructed from the elemental components. Finally, equations that are fundamental for understanding the parallel conductance model and its relationship to cell membrane potentials are derived.
Summary: The strange and secretive habits of the inhabiters of the Black Order come into light. First Habit: What could Lavi possibly be doing so early in the morning?!. Disclaimer: If I owned D. Gray-Man, I wouldnt be writing my story HERE would I? Id be putting them down in bonus pages of the manga! --rolls eyes-- I probably dont even own this idea, I got this sometime while reading "Ask Rabi" and "Reasons Why Exorcists DONT Have Internet" .... Note: Lavi/Rabi/Ravi, Ill just be using the spelling I found in the official manga... Ill write about 2 to 3 chapters and if I only get like 0-2 reviews, Ill drop this before my self-esteem does... Well, hope you enjoy!. -------------------------------. Lavi was lying down on his bed trying to find something interesting to look at, or anything in general that would make it feel as if time moved faster. He glanced over at the clock once more that was miraculously still visible and functioning under the unbelievably huge stacks of paper he and ...
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S.F. Amalraj, D. Sharon, M. Talianker, C.M. Julien, L. Burlaka, R. Lavi, E. Zhecheva, B. Markovsky, E. Zinigrad, D. Kovacheva, R. Stoyanova et D. Aurbach, Electrochim. Acta, 97, 259-270 (2013). ...
To estimate changes in compliance, we evaluated the effects of sepsis on the end-diastolic pressure-volume relationship (EDPVR) in the left ventricle of rats that had undergone an open thorax procedure. Sepsis was induced in male Wistar Hannover rats (n = 7; 240 to 270 g) by intraperitoneal administration of a slurry of cecal contents; control rats (n = 7) were given 5% dextrose only. On the third day after induction of sepsis, left ventricular (LV) pressure and LV dimensions were recorded simultaneously in animals of both groups. Using a micromanometer and ultrasonic crystals, measurements were obtained at baseline and during the increase of afterload. Blood samples were taken for determination of complete blood count, white blood cell differential count, and lactate concentration, and for bacteriologic examination. Septic rats lost weight, and developed changes in body temperature, ascites, and abscesses in the abdominal and thoracic cavities, gram-negative bacteremia, and increase in heart ...
Aims The aims of the study were to explore the effects of long-term endurance exercise on atrial and ventricular size and function in adolescents and to examine whether these changes are related to maximal oxygen uptake (VO2max). Methods and results Twenty-seven long-term endurance-trained adolescents aged 13-19 years were individually matched by age and gender with 27 controls. All participants, 22 girls and 32 boys, underwent an echocardiographic examination at rest, including standard and colour tissue Doppler investigation. VO2max was assessed during treadmill exercise. All heart dimensions indexed for body size were larger in the physically active group compared with controls: left ventricular end-diastolic volume 60 vs. 50 mL/m(2) (P amp;lt; 0.001), left atrial volume 27 vs. 19 mL/m(2) (P amp;lt; 0.001), and right ventricular (RV) and right atrial area 15 vs. 13 and 9 vs. 7 cm(2)/m(2), respectively (P amp;lt; 0.001 for both). There were strong associations between the size of the cardiac ...
Volume overload refers to the state of one of the chambers of the heart in which too large a volume of blood exists within it for it to function efficiently. Ventricular volume overload is approximately equivalent to an excessively high preload. It is a cause of cardiac failure. In accordance with the Frank-Starling law of the heart, the myocardium contracts more powerfully as the end-diastolic volume increases. Stretching of the myofibrils in cardiac muscle causes them to contract more powerfully due to a greater number of cross-bridges being formed between the myofibrils within cardiac myocytes. This is true up to a point, however beyond this there is a loss of contractile ability due to loss of connection between myofibrils; see figure. Various pathologies, listed below, can lead to volume overload. Different mechanisms are involved depending on the cause, however the common theme is that of a high cardiac output with a low or normal afterload. The output may be high due to the inefficiency ...
An apparatus is provided for determining a calibration coefficient of a blood property sensor located in a blood system, wherein the blood system can include a vascular portion and an extracorporeal portion. The blood property sensor can be located in the extracorporeal portion to measure the change in a blood property corresponding to the passing of an indicator. The indicator can include a known amount of an introduced dilution indicator. The controller is provided for determining the calibration coefficient of the blood property sensor corresponding to the introduced dilution indicator in the measured change in the blood property.
The dataset contains 72 RNA-seq samples obtained from adult (P150) C57BL/6JCrl mice. Samples are from total heart, liver and kidney tissue. Four different genotypes are included in the data: 1) wild type, 2) transgenic Ciona intestinalis AOX in Rosa26 locus (Szibor et al. 2017, DOI: 10.1242/dmm.027839), 3) respiratory chain complex III deficient Bcs1lp.S78G knock-in mice (a GRACILE syndrome patient mutation, Leveen et al. 2011, DOI: 10.1002/hep.24031) and 4) a cross between the AOX transgenic and Bcs1lp.S78G mice (Rajendran et al. EMBO Mol Med. In press).
PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.
PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.
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f(1)= 20, f(3)=13, f(5)=15, f(7)=16, f(9)=11, on [0,6] a, used midpint rule with n=5 to estimate intergral form 0 to 10 f(x)dx b, use trapezoidal rule with n=4 to estimate intergral from 1 to 9 f(x)dx c, used simpsons rule with n=4 to estimate intergal from 1 to 9 (x)dx ...
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 ...
Left ventricular volumes Several studies compared 2D echocardiography and CMR for assessment of left ventricular volumes and LVEF.[5, 11-14] These studies differ in number of included patients, aetiology of heart disease and left ventricular function and volume, but all consistently show underestimation of EDV and ESV by 2D echocardiography compared with CMR. Reported mean differences vary considerably between studies and range from 10 to 94 ml for ESV and from 11 to 131 for EDV.[5, 19] We found the discrepancy between the two imaging modalities to be strongly related to left ventricular volume, with increasing differences in larger hearts. This finding is supported by a smaller study by Gruszczynska et al. in ischaemic heart failure patients.[13] It is further corroborated by the observation that studies in hearts with predominantly (near) normal volumes report lower differences, whereas studies including dilated hearts are at the higher end of the spectrum.[5, 11, 14, 20]. The underestimation ...
BACKGROUND: Left ventricular (LV) ejection fraction (EF) measured by two-dimensional echocardiographic (2DE) imaging is an important correlate of survival. Real-time three-dimensional echocardiographic (3DE) imaging has addressed some of the limitations of 2DE imaging. The aim of this study was to determine whether 3DE imaging is more predictive of outcomes than 2DE imaging. METHODS: A total of 529 patients undergoing LV assessment with 2DE and 3DE imaging in 2003 and 2004 at a tertiary referral cardiac center were studied. Patients had a high frequency of cardiovascular risk factors. Images were gathered over four cardiac cycles using a matrix-array transducer, with measurements performed offline. Follow-up (all-cause mortality or cardiac hospitalization) was obtained over 6.6 ± 3.4 years in 455 of 486 patients with images suitable for measurement (94%). RESULTS: There were 194 events (43%), including 75 deaths (16.4%). Larger LV volumes and lower EF were associated with worse outcomes ...
The intracranial pressure-volume function as determined by brain elasticity is reported in normal dogs. Rapid subarachnoid infusions clearly define an exponential relationship between pressure and volume. An aliquot technique to measure elastance (dP/dV) at multiple intracranial pressures demonstrates a linear relationship between elastance and pressure. This follows mathematically from the exponential nature of the basic pressure-volume function. The clinical significance of brain elastance measurements is discussed. It is emphasized that the effects of pressure on CSF dynamics are superimposed on the pressure-volume function of brain elasticity and probably account for the process of spatial compensation for an expanding mass lesion. It is not apparent that elastance measurements can serve as indicators of impending decompensation, since the pressure-volume function of brain elasticity provides no direct information about CSF dynamics. Accordingly, the clinical usefullness of elastance measurements is
The burden of cardiovascular disease is growing faster than our ability to combat it, and our new report indicates it could get much worse in the coming years," Houser said.. Total heart disease costs across all conditions are projected to more than triple among people aged 80 or older. Heart disease costs are also expected to more than double among those aged 65 to 79, the report found.. The United States will spend $749 billion in direct medical costs treating heart-related diseases in 2035. Thats more than double the $318 billion now spent annually, the report revealed.. Indirect costs tied to lost productivity also will increase by an estimated 55 percent. That will drive those costs up to $368 billion in 2035 from $237 billion today.. On average, a worker with heart disease costs their employer nearly 60 hours and over $1,100 more in lost productivity per year than a healthy employee, the AHA estimated.. Heart disease survivor Shane Mandel provided a personal example of those indirect ...
Contrast-enhanced three-dimensional echocardiography (3D-Echo) may be another option for detecting and measuring scars left on heart muscle after a myocardial infarction, researchers have found.
The RVA (Right Ventricular Analysis) workflow offers analysis of the right ventricle. The workflow offers two contour detection methods for the right ventricle. For calculation of ventricular volume, seven volume models are implemented.
A label is a user-friendly name that is assigned to a volume, usually by an end user, to make it easier to recognize. A volume can have a label, a drive letter, both, or neither. To set the label for a volume, use the SetVolumeLabel function.
We have tried this here before - what happens in real world test is the leeward sail gets too blanketed from the windward sail, so that second sail doesnt give you any performance advantage at all. Only downwind do both sails actually get wind - so its not a product that we would try and develop, sorry ...
Quantification of ventricular pump function is fundamental to the practice of cardiology and is required for research into most aspects of cardiac physiology, disease, and therapeutics. Drawing an analogy between the heart and a steam engine, Otto Frank (1) introduced the pressure-volume diagram as a means of characterizing left ventricular properties in the 1890s. Nearly 80 years later, Suga (2) formalized the idea that the relationship between pressure and volume at end systole was relatively independent of loading conditions and that the slope of the curve, called Emax or Ees, was a sensitive measure of contractility. At nearly the same time, several investigators demonstrated how the relationship between pressure and volume at end diastole similarly provided the framework for quantifying passive properties of the myocardium (3,4). In the decades to follow, there was intensive research into the characteristics of the end-systolic pressure-volume relation (ESPVR) and end-diastolic ...
The percentage of patients that fall within versus outside the normal range in HFNEF is critically dependent on the inclusion and exclusion criteria used to define the population, and details of the methods, procedures, and technology used by a core echocardiography laboratory. For example, depending on the inclusion and exclusion criteria used, even data from the Cardiovascular Health Study have considerable variation (1,12,13). In 2 previous Cardiovascular Health Study publications, the mean LV EDD in patients with HFNEF was not statistically different from the mean LV EDD in the control group. In addition, when data from 3 Cardiovascular Health Study publications are compared, there is a difference between the mean values of LV EDD in the control groups reported in each study. Therefore, even using a carefully run core laboratory, differences in inclusion and exclusion criteria may create enough variability that the small differences in the mean value of LV EDD in the HFNEF patients versus ...
I offer training plans to cyclists, triathletes and runners through TrainingPeaks.com. While I describe in most of my books how to set ones training zones, I still get lots of questions about how to do it from those who are new to my plans. So rather than answering all of those emails I will just point athletes to this post from now on. Even if you dont have any intentions to use a plan of mine, this may help you get your trining zone set up effectively.. This Quick Guide will help you get the intensity of your training plan workouts right whether you use only a heart rate monitor or also train with a power meter and/or a runners speed and distance device such as a GPS or accelerometer. Swimming pace is also described here for Triathletes. For a more complete guide to training with heart rate, power and pace please see my book Total Heart Rate Training. You will also find more detailed information on the subject of measuring intensity in my Triathletes Training Bible, Cyclists Training ...
KYOLIC� Aged Garlic Extract begins with 100% organically� grown garlic bulbs. They are then aged to perfection in a unique extraction process to eliminate odor and create beneficial compounds found only in Kyolic. Aged Garlic Extract [250 mg]; Vitamin B6 [12.5 mg]; Vitamin B12 [100 mcg]; Folic acid [300 mcg]; L-Arginine [100mg] (per capsule). Kyolic� Formula 108 contains Aged Garlic Extract with Vitamins B6, B12, Folic Acid and L-Arginine patented to promote healthy homocysteine, and supports cholesterol, blood pressure and circulation for total heart health.* Take the best-KYOLIC� Aged Garlic Extract , the most scientifically researched, highest quality and best-selling odorless Sociable Garlic�. ...
Introduction: The pathophysiology of ischemia involves the cellular effect of myocardial ischemia, reactive oxygen species, and reactive inflammatory enzymes. Left atrial (LA) ischemia has been shown to have several mechanisms through which it can lead to abnormalities in left ventricular filling in early diastole and thus reduces LA passive functional reserve. In this review, we evaluated the physiological mechanisms of LA during myocardial ischemia, as previously demonstrated in experimental and clinical studies.Methods: Several databases were searched in order to find related articles. The outcome of interest included LA function measurements (measurement of LA volume) during ischemia. By applying a standardized protocol, reviewers independently extracted and assessed the studies.Results: The literature review indicated 50 publications, among which 15 studies were eligible for analysis. Assessment of LA dimension and function is essential for clinical evaluation and prognostic purposes. ...
The present study investigates for the first time the relationship of LA volumes and reservoir function with subclinical cerebrovascular disease. We demonstrated that greater LA volumes and smaller LA reservoir function are associated with SBI and WMHV. In addition, we showed that LAVmin is a stronger predictor of silent cerebrovascular lesions than the commonly used LAVmax, and that its significant association with subclinical brain disease persisted after controlling for potential confounders and risk factors.. The mechanisms linking an increase in LA volume with cerebrovascular disease are not completely understood, but it is reasonable to hypothesize that the mechanisms suggested for the relationship between LA size and stroke may, at least in part, apply to silent cerebrovascular disease as well. This is biologically plausible considering that: 1) subjects with subclinical brain lesions are more likely to experience an overt cerebrovascular event; and 2) subclinical and overt ...
TY - JOUR. T1 - α2cDel322-325 and β1Arg389 Adrenergic Polymorphisms Are Not Associated With Reduced Left Ventricular Ejection Fraction or Increased Left Ventricular Volume. AU - Canham, Russell M.. AU - Das, Sandeep R.. AU - Leonard, David. AU - Abdullah, Shuaib M.. AU - Mehta, Sameer K.. AU - Chung, Anne K.. AU - Li, Jia Ling. AU - Victor, Ronald G.. AU - Auchus, Richard J.. AU - Drazner, Mark H.. PY - 2007/1/16. Y1 - 2007/1/16. UR - http://www.scopus.com/inward/record.url?scp=33846029483&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=33846029483&partnerID=8YFLogxK. U2 - 10.1016/j.jacc.2006.10.016. DO - 10.1016/j.jacc.2006.10.016. M3 - Article. C2 - 17222742. AN - SCOPUS:33846029483. VL - 49. SP - 274. EP - 276. JO - Journal of the American College of Cardiology. JF - Journal of the American College of Cardiology. SN - 0735-1097. IS - 2. ER - ...
Here is a reach sport. So if January alleged lawyer Mohsen al-Alawi who will be stronger in the world-wide Natural Bodybuilding Federation championshipsShe is now superior to the point of examining plus for yourself. The FDA recommends that consumers not overstep more than a regular volume can and for all that you get a minimum […]. ...
TY - JOUR. T1 - Accuracy of cardiac output estimation with biplane transesophageal echocardiography.. AU - Hozumi, T.. AU - Shakudo, M.. AU - Applegate, Richard Lee. AU - Shah, P. M.. PY - 1993/1. Y1 - 1993/1. N2 - To evaluate the accuracy of cardiac output measurements with biplane transesophageal Doppler echocardiography, we examined 26 sets of observations in 14 patients using thermodilution technique as the standard. A mitral inflow method by single-plane combined the time-velocity integral of mitral inflow at the mitral annulus with the area of mitral annulus, assuming it to be a circular shape, by use of either the four- or the two-chamber view. With both views, a mitral inflow method by biplane combined the average of time-velocity integral of mitral inflow from the four- and the two-chamber views with the area of mitral annulus, assuming it to be an ellipsoid shape. The correlation coefficients between thermodilution and single-plane method of cardiac output were 0.81 (SEE = 0.72 L/min) ...
We determined whether chronic treatment with nipradilol, a β-blocker with vasodilating action, reduces left ventricular cavity dilation (LV remodeling) following myocardial infarction and improves cardiac performance. Myocardial infarction was produced by coronary artery ligation in 16-week-old female rats and then the rats were treated for 3-4 months with nipradilol (10 mg/kg/day) or vehicle (0.5% carboxymethylcellulose). The effect of nipradilol on LV remodeling was evaluated by assessing the left ventricular end-diastolic volume index (LVEDVI)and passive pressure-volume relation curve. Since LVEDVI depends on the infarct size, LVEDVI was compared between the vehicle and nipradilol-treated rats with similar infarct size (10-40%). At 3-4 months after myocardial infarct production, the left ventricular end-diastolic volume index in the vehicle-treated rats with myocardial infarction was significantly increased, compared with that in the sham-operated rats without infarction. The ...
Objective: To determine the accuracy of volumetric analysis of teeth in vivo using cone-beam computed tomography (CBCT). Materials and Methods: The physical volume (Vw) of 24 bicuspids extracted for orthodontic purposes (16 were imaged with the I-CAT and 8 with the CB MercuRay) were determined using the water displacement technique. Corresponding pretreatment CBCT image data were uploaded into Amira 4.0 for segmentation and radiographic volume (Va). All measurements were performed twice by two observers. The statistical difference between Vw and Va was assessed using a paired Hest. The intraobserver and interobserver reliability were determined by calculating Pearson correlation coefficients and intraclass correlation coefficients. Results: The overall mean Vw of teeth specimens was 0.553 +/- 0.082 cm(3), while the overall mean Va was 0.548 +/- 0.079 cm(3) (0.529 +/- 0.078 cm(3) for observer 1 and 0.567 +/- 0.085 cm(3) for observer 2). There were statistically significant differences between Va ...
Right ventricular (RV) function is known to predict survival in pulmonary hypertension (PH). Furthermore, increasing right ventricular volumes (RVEDVI, RV end diastolic volume and RVESVI, RV end systolic volume index) and falling ejection fraction (RVEF) whilst on treatment have been shown to determine poorer outcome.1 Measurement of RV function by cardiac MRI (CMR) is not widely available and often poorly tolerated in very breathless patients. Monitoring of PH patients traditionally focuses on serial 6 min walk testing (6MWD) and N terminal pro brain natriuretic peptide (NTproBNP), a biomarker that has been shown to reflect RV function and structure.2 We hypothesised that ∆NTproBNP is a superior non invasive marker of ∆RV function than ∆6MWD, and predicts survival.. ...
In this study we will investigate a method combining transoesophageal echocardiography and non-invasive finger arterial blood pressure waveforms to non-invasively construct pressure-volume (P-V) loops to describe the end-systolic pressure-volume relations in the heart. This may provide a method to obtain more insight on cardiac contractile function and the interaction of the heart with the vasculature during surgery ...
The present invention relates generally to medical measurement systems for evaluation of organ function and understanding symptom and pain mechanisms. This model takes into account a number of factors such as volume and properties of the fluid and the surrounding tissue. Particular emphasis is on a multifunctional probe that can provide a number of measurements including volume of refluxate in the esophagus and to what level it extents. The preferred embodiments of the invention relate to methods and apparatus for measuring luminal cross-sectional areas of internal organs such as blood vessels, the gastrointestinal tract, the urogenital tract and other hollow visceral organs and the volume of the flow through the organ. It can also be used to determine conductivity of the fluid in the lumen and thereby it can determine the parallel conductance of the wall and geometric and mechanical properties of the organ wall.
Around 1900, the Friesians were crossbred in order to be more suitable for agricultural work. Unfortunately, this development reduced the lung and heart volume of the breed. As a result, during the 1960s, Friesian horses disappeared from international driving and dressage arenas. Therefore, some breeders decided to return to the roots of a more original Friesian breed. These experts began to search for the best desert Arabian blood, which was first introduced into the breed 400 years before, to breed to carefully selected Friesian mares. They chose the well-known, elite stallion, "Gharib", a straight Egyptian stallion at Marbach State Stud, in order to improve the following athletic characteristics ...
Final elution volumes of 60 µl, 85 µl, 110 µl, or 165 µl can be selected using the QIAsymphony Virus Blood 200 protocol. Please note that the initial elution volumes are 95 µl, 120 µl, 145 µl, or 200 µl. When calculating the amount of internal control(s) as well as the titer of the processed sample, it is necessary to take into consideration the initial volume of elution buffer that is used for each sample. ...
Architect: Simon Vierpyl Simpsons Hospital was founded in 1779 under the terms of a Mr George Simpsons will, a Dublin merchant who left bequests to many
Learn about a Stress Cardiac MRI, including how to get ready for the test, what is done during the test and how long it will take.
Jessica Simpsons odd antics on HSN left many talking about it -- even Nick Lachey! An insider EXCLUSIVELY revealed to HollywoodLife.com that Jessicas ex-husband felt embarrassed for her after he saw the designers appearance on the show.

Reduced cardiac volumes in chronic fatigue syndrome associate with plasma volume but not length of disease: a cohort study -...Reduced cardiac volumes in chronic fatigue syndrome associate with plasma volume but not length of disease: a cohort study -...

The relationship between plasma volume and severity of fatigue symptoms suggests a potential therapeutic target in CFS. ... Reduced cardiac volumes in chronic fatigue syndrome associate with plasma volume but not length of disease: a cohort study. By ... Reduced cardiac volumes in chronic fatigue syndrome associate with plasma volume but not length of disease: a cohort study. ... Conclusions: This study confirms an association between reduced cardiac volumes and blood volume in CFS. Lack of relationship ...
more infohttps://www.prohealth.com/library/reduced-cardiac-volumes-in-chronic-fatigue-syndrome-associate-with-plasma-volume-but-not-length-of-disease-a-cohort-study-5914

Patent US7024244 - Estimation of stroke volume cardiac output using an intracardiac pressure sensor - Google PatentsPatent US7024244 - Estimation of stroke volume cardiac output using an intracardiac pressure sensor - Google Patents

The pressure monitor may calculate the stroke volume or cardiac output using the velocity-time integral. The pressure monitor ... such as a stroke volume or a cardiac output, as a function of a pressure in the heart. A pressure monitor may measure pressure ... may control a delivery of therapy by an implantable medical device as a function of the stroke volume or cardiac output. ... Stroke volume is the volume of blood pumped out of the heart in one beat. Cardiac output is the volume of blood pumped out of ...
more infohttp://www.google.com/patents/US7024244?dq=6,272,646

Displaying articles by keyword Cardiac volumeDisplaying articles by keyword Cardiac volume

Cardiac cycle Cardiac disease prevention Cardiac magnetic resonance imaging Cardiac output Cardiac rhythms Cardiac volume ... Stroke volume Structure Sudden cardiac death Surface friction Symbolic dynamics Syndrome decoding Systolic Telemedicine The ... The results of phase blood volume measurement and the numerical values that characterize the metabolic processes in heart ... Minute volume Mission to Mars Mortality Myocardial infarction Myocardium Nonequilibrium Non HLA antibodies Noninvasive analyzer ...
more infohttps://www.cardiometry.net/keywords/cardiac-volume

Understanding Cardiac Pressure-Volume Loops (PVLOOPS) Free DownloadUnderstanding Cardiac Pressure-Volume Loops (PVLOOPS) Free Download

Understanding Cardiac Pressure-Volume Loops (PVLOOPS) Download. Description of Understanding Cardiac Pressure-Volume Loops ( ... Understanding Cardiac Pressure-Volume Loopsconsiders the main physiological aspects of cardiac pressure-volume loops and their ... Understanding Cardiac Pressure-Volume Loops (PVLOOPS) Related Software:. *Celexis 1.02. Celexis - speed reading computerised ... Understanding Cardiac Pressure-Volume Loops (PVLOOPS). Interactive learning module to aid understanding of cardiopulmonary ...
more infohttp://www.aptrio.com/Education/Miscellaneous/understanding-cardiac-pressure-volume-loops-pvloops-10982.html

Total Open Heart Volume | Cardiac Surgery in Pennsylvania 2005 | PHC4Total Open Heart Volume | Cardiac Surgery in Pennsylvania 2005 | PHC4

Cardiac Surgery in Pennsylvania 2005 - Total Open Heart Volume The Cardiac Surgery in Pennsylvania 2005 report provides ... The following open heart volume tables provide volume figures for all types of open heart surgery. These numbers provide a more ...
more infohttp://www.phc4.org/reports/cabg/05/volumereports.htm

Changes in cardiac volume determined with repeated enhanced 4DCT during chemoradiotherapy for esophageal cancer | Radiation...Changes in cardiac volume determined with repeated enhanced 4DCT during chemoradiotherapy for esophageal cancer | Radiation...

None of the potential explanatory variables correlated with heart volume changes. Cardiac volume reduced significantly from an ... The changes in heart volume, blood pressure and heart rate may be valuable indicators of cardiac impairment and target dose ... We performed repeated four-dimensional computed tomography (4DCT) to detect changes in cardiac volume during radiotherapy for ... Heart volumes and other relative parameters were compared by the SPSS software package, version 19.0. Compared with its initial ...
more infohttps://ro-journal.biomedcentral.com/articles/10.1186/s13014-018-1121-z

Stroke Volume and Cardiac OutputStroke Volume and Cardiac Output

... .entry-title {display:none;}. .site-info {display: none;}. STROKE VOLUME AND CARDIAC OUTPUT ... See Stroke Volume Optimisation and Improved Outcomes.. Stoke Volume Index. Stroke Volume Index (SVI) relates SV to body surface ... Stroke Volume. Stroke Volume (SV) is the volume of blood in millilitres ejected from the each ventricle due to the contraction ... Cardiac Index. Cardiac index (CI) is the cardiac output proportional to the body surface area (BSA). The unit of measurement is ...
more infohttp://www.deltexmedical.com/decision_tree/stroke-volume-and-cardiac-output/

Does Volume of Cardiac Catheterizations Correlate With Better Outcomes? | Childrens Hospital of PhiladelphiaDoes Volume of Cardiac Catheterizations Correlate With Better Outcomes? | Children's Hospital of Philadelphia

Glatzs research discusses the relationship between hospital procedure volume and complications following cardiac ... Does Volume of Cardiac Catheterizations Correlate With Better Outcomes?. Published on Nov 17, 2014 in CHOP News ... "Relationship between hospital procedure volume and complications following cardiac catheterization: a report from the IMPACT ... In many types of cardiology procedures, there is an association between higher institutional volume and improved outcomes. ...
more infohttps://www.chop.edu/news/does-volume-cardiac-catheterizations-correlate-better-outcomes

US Patent # 5,391,190. Variation in cardiac chamber volume or pressure as a controlling
     parameter - Patents.comUS Patent # 5,391,190. Variation in cardiac chamber volume or pressure as a controlling parameter - Patents.com

A rate adaptive cardiac pacer is described in which the impedance versus time information derived using impedance ... Variation in cardiac chamber volume or pressure as a controlling parameter Abstract. A rate adaptive cardiac pacer is described ... For example, the beat-by-beat variation in end-diastolic volume, end-systolic volume, average ventricular volume, or stroke ... 4,686,987, there is described a rate adaptive cardiac pacer in which means are provided for measuring stroke volume by ...
more infohttp://patents.com/us-5391190.html

Role of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension | Clinical ScienceRole of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension | Clinical Science

Role of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension. P.I. Korner ... Role of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension ... Role of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension ... Role of Cardiac Output, Volume and Resistance Factors in the Pathogenesis of Hypertension ...
more infohttp://www.clinsci.org/content/57/s5/77s

Effect of hemodialysis on blood volume distribution and cardiac output. | HypertensionEffect of hemodialysis on blood volume distribution and cardiac output. | Hypertension

Effects of hemodialysis on extracellular fluid volume distribution, left ventricular volumes, and cardiac output were ... Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo, S ... Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo and S ... Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo and S ...
more infohttp://hyper.ahajournals.org/content/3/3/327

Effects of volume expansion on cardiac output in the preterm infant.Effects of volume expansion on cardiac output in the preterm infant.

7 days presenting without cardiac dysfunction and with a low cardiac output. They received 10% albumin solution (20 ml ... Clinical and echocardiographic haemodynamic evaluations of response to volume expansion are described in 12 preterm neonates ... 7 days presenting without cardiac dysfunction and with a low cardiac output. They received 10% albumin solution (20 ml kg-1) ... Cardiac Output, Low / physiopathology, therapy*. Echocardiography, Doppler. Gestational Age. Hemodynamics*. Humans. Infant, ...
more infohttp://www.biomedsearch.com/nih/Effects-volume-expansion-cardiac-output/9401521.html

High-quality anatomical structure enhancement for cardiac image dynamic volume rendering | (2008) | Zhang |  Publications | SpieHigh-quality anatomical structure enhancement for cardiac image dynamic volume rendering | (2008) | Zhang | Publications | Spie

Dynamic volume rendering of the beating heart is an important element in cardiac disease diagnosis and therapy planning, ... High-quality anatomical structure enhancement for cardiac image dynamic volume rendering Author(s): Qi Zhang; Roy Eagleson; ... and multiple TFs are designed for each of the MVs and the source cardiac volume respectively, mapping the voxels intensity to ... Most clinical applications tend to focus upon a particular set of organ structures, and in the case of cardiac imaging, it ...
more infohttp://spie.org/Publications/Proceedings/Paper/10.1117/12.773225

US5391190A - Variation in cardiac chamber volume or pressure as a controlling parameter 
        - Google PatentsUS5391190A - Variation in cardiac chamber volume or pressure as a controlling parameter - Google Patents

A rate adaptive cardiac pacer is described in which the impedance versus time information derived using impedance ... derived from a pressure transducer in a ventricular chamber is signal processed to recover a modulating envelope due to volume ... Demand-based cardiac function therapy US7392084B2 (en) 2003-09-23. 2008-06-24. Cardiac Pacemakers, Inc.. Demand-based cardiac ... Cardiac Pacemakers, Inc.. Rate adaptive cardiac pacing systems and methods US8406879B2 (en) 2006-12-20. 2013-03-26. Cardiac ...
more infohttps://patents.google.com/patent/US5391190

Controversies in Electrophysiology, An Issue of the Cardiac Electrophysiology Clinics, Volume 7-3 - 1st EditionControversies in Electrophysiology, An Issue of the Cardiac Electrophysiology Clinics, Volume 7-3 - 1st Edition

Volume 7-3 - 1st Edition. Print Book & E-Book. ISBN 9780323399067, 9780323399050 ... Controversies in Electrophysiology, An Issue of the Cardiac Electrophysiology Clinics, Volume 7-3 1st Edition. ... Controversies in Cardiac Electrophysiology are examined in this issue of Cardiac Electrophysiology Clinics. Difficult cases are ... An Issue of the Cardiac Electrophysiology Clinics, ... View all volumes in this series: The Clinics: Internal Medicine ...
more infohttps://www.elsevier.com/books/controversies-in-electrophysiology-an-issue-of-the-cardiac-electrophysiology-clinics/daoud/978-0-323-39906-7

Epicardial Interventions in Electrophysiology, An Issue of Cardiac Electrophysiology Clinics, Volume 2-1 - 1st EditionEpicardial Interventions in Electrophysiology, An Issue of Cardiac Electrophysiology Clinics, Volume 2-1 - 1st Edition

Volume 2-1 - 1st Edition. Print Book & E-Book. ISBN 9781437717983, 9781455700172 ... Epicardial Interventions in Electrophysiology, An Issue of Cardiac Electrophysiology Clinics, Volume 2-1 1st Edition. ... This issue of Cardiac Electrophysiology Clinics is one of the first collections of articles on this cutting edge technique. ...
more infohttps://www.elsevier.com/books/epicardial-interventions-in-electrophysiology-an-issue-of-cardiac-electrophysiology-clinics/shivkumar/978-1-4377-1798-3

Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery - Volume 26, Number 3-March 2020 -...Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery - Volume 26, Number 3-March 2020 -...

Volume 26, Number 3-March 2020 Letter. Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery ... Scriven JE, Scobie A, Verlander NQ, Houston A, Collyns T, Cajic V, et al. Mycobacterium chimaera infection following cardiac ... We have observed considerable variation in risk between cardiac centers, from 0 cases rising to 1 per 100 patients for 1 center ... Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery. Emerging Infectious Diseases. 2020;26( ...
more infohttps://wwwnc.cdc.gov/eid/article/26/3/18-0452_article

Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery - Volume 26, Number 3-March 2020 -...Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery - Volume 26, Number 3-March 2020 -...

Volume 26, Number 3-March 2020 Letter. Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery ... Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery. Emerging Infectious Diseases. 2020;26( ... Global health estimate of invasive Mycobacterium chimaera infections associated with heater-cooler devices in cardiac surgery. ... Invasive Mycobacterium chimaera Infections and Heater-Cooler Devices in Cardiac Surgery. Emerg Infect Dis. 2020;26(3):632-633. ...
more infohttps://wwwnc.cdc.gov/eid/article/26/3/19-1818_article

Total bile acid levels are associated with left atrial volume and cardiac output in patients with cirrhosisTotal bile acid levels are associated with left atrial volume and cardiac output in patients with cirrhosis

... ... Total serum BA levels are associated with enlarged left atrial volume and markers of the hyperdynamic circulation in patients ... BA pool alteration in cirrhosis may contribute toward the development of hemodynamic and cardiac disturbances. We aimed to ... Cirrhotic patients were enrolled prospectively in this hypothesis-generating study and evaluated for cardiac and hemodynamic ...
more infohttps://insights.ovid.com/ejghe/201804000/00042737-201804000-00006

Regulation of protein kinase C isozymes in volume overload cardiac hypertrophy - Semantic ScholarRegulation of protein kinase C isozymes in volume overload cardiac hypertrophy - Semantic Scholar

A significant upregulation of PKC-δ both on the protein and on the mRNA-level was also noted in volume-overload induced left ... After 2, 7 and 30 days of sham or aortocaval shunt operation in male Wistar rats, PKC-activity and the expression of cardiac ... characterizes in the left and right ventricle a differential regulation of the dominant PKC-isozymes in volume-overload cardiac ... performed to investigate whether PKC-isozymes are differentially regulated during the development of volume-overload cardiac ...
more infohttps://www.semanticscholar.org/paper/Regulation-of-protein-kinase-C-isozymes-in-volume-Braun-Larosee/063d82662f20b739ac2d426257ab4a1826855fc9

OBSERVATIONS ON THE INDIVIDUAL EFFECTS OF SMOKING ON THE BLOOD PRESSURE, HEART RATE, STROKE VOLUME AND CARDIAC OUTPUT OF...OBSERVATIONS ON THE INDIVIDUAL EFFECTS OF SMOKING ON THE BLOOD PRESSURE, HEART RATE, STROKE VOLUME AND CARDIAC OUTPUT OF...

OBSERVATIONS ON THE INDIVIDUAL EFFECTS OF SMOKING ON THE BLOOD PRESSURE, HEART RATE, STROKE VOLUME AND CARDIAC OUTPUT OF ... OBSERVATIONS ON THE INDIVIDUAL EFFECTS OF SMOKING ON THE BLOOD PRESSURE, HEART RATE, STROKE VOLUME AND CARDIAC OUTPUT OF ... STROKE VOLUME AND CARDIAC OUTPUT OF HEALTHY YOUNG ADULTS*†) CAROLINE BEDELL THOMAS, F.A.C.P.; JOHN LAURENS BATEMAN; EVAN ... STROKE VOLUME AND CARDIAC OUTPUT OF HEALTHY YOUNG ADULTS*†)(OBSERVATIONS ON THE INDIVIDUAL EFFECTS OF SMOKING ON THE BLOOD ...
more infohttp://annals.org/aim/article-abstract/676212/observations-individual-effects-smoking-blood-pressure-heart-rate-stroke-volume

Alterations in Stroke Volume during Cardiac Output Determination by Thermodilution | Anesthesiology | ASA PublicationsAlterations in Stroke Volume during Cardiac Output Determination by Thermodilution | Anesthesiology | ASA Publications

Alterations in Stroke Volume during Cardiac Output Determination by Thermodilution. Anesthesiology 9 1994, Vol.81, 786. doi: ... Alterations in Stroke Volume during Cardiac Output Determination by Thermodilution You will receive an email whenever this ... Toshiaki Nishikawa; Alterations in Stroke Volume during Cardiac Output Determination by Thermodilution. Anesthesiology 1994;81( ...
more infohttp://anesthesiology.pubs.asahq.org/article.aspx?articleid=1949756

Evaluating cardiac physiology through echocardiography in bottlenose dolphins: using stroke volume and cardiac output to...Evaluating cardiac physiology through echocardiography in bottlenose dolphins: using stroke volume and cardiac output to...

The volume of blood leaving the left heart (the cardiac output, CO) is a product of the volume of blood ejected per heart beat ... Evaluating cardiac physiology through echocardiography in bottlenose dolphins: using stroke volume and cardiac output to ... Evaluating cardiac physiology through echocardiography in bottlenose dolphins: using stroke volume and cardiac output to ... Evaluating cardiac physiology through echocardiography in bottlenose dolphins: using stroke volume and cardiac output to ...
more infohttp://jeb.biologists.org/content/218/22/3604?ijkey=220bf60b183e9f9a84d63463fe89abedb506bd6a&keytype2=tf_ipsecsha

Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure | Clinical ScienceAblation of brainstem C1 neurons improves cardiac function in volume overload heart failure | Clinical Science

Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure. David C Andrade, Camilo Toledo, ... Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure ... Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure ... Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure ...
more infohttp://www.clinsci.org/content/early/2019/01/09/CS20180589.article-info

Ablation of brainstem C1 neurons improves cardiac function in volume overload heart failure | Clinical Science | Portland PressAblation of brainstem C1 neurons improves cardiac function in volume overload heart failure | Clinical Science | Portland Press

Ablation of RVLM-C1 neurons improves cardiac function in volume overload HF rats. Cardiac function was evaluated through ... Reduction of cardiac arrhythmias following selective ablation of RVLM-C1 is independent of cardiac hypertrophy and cardiac ... Reduction of cardiac arrhythmias following selective ablation of RVLM-C1 is independent of cardiac hypertrophy and cardiac ... Reduction of cardiac arrhythmias following selective ablation of RVLM-C1 is independent of cardiac hypertrophy and cardiac ...
more infohttps://portlandpress.com/clinsci/article/133/3/393/111056/Ablation-of-brainstem-C1-neurons-improves-cardiac
  • Therefore, the aim of this study was to determine the role of RVLM-C1 neurons in cardiac autonomic control and deterioration of cardiac function in HF rats. (portlandpress.com)
  • RVLM-C1 neurons were selectively ablated using cell-specific immunotoxin (dopamine-β hydroxylase saporin [DβH-SAP]) and measures of cardiac autonomic tone, function, and arrhythmia incidence were evaluated. (portlandpress.com)
  • These software modules are intended for use by students in the areas of allopathic and osteopathic medicine, physician assistant, dentistry, pharmacy, optometry and nursing.This module,Understanding Cardiac Pressure-Volume Loopsconsiders the main physiological aspects of cardiac pressure-volume loops and their relationship to ventricular, atrial and arterial pressures, afterload, preload and cardiac contractility. (aptrio.com)
  • Heart volumes and other relative parameters were compared by the SPSS software package, version 19.0. (biomedcentral.com)
  • In patients with reduced LV function, all volume and mass measurements were again similar for SSFP sequences at 1.5 vs. 3 T. In volunteers and patients, measurement variabilities for LV parameters were small for both field strength and sequences, ranging between 3.7% and 10.7% for mass. (ox.ac.uk)
  • Determination of cardiac volumes and mass with FLASH and SSFP cine sequences at 1.5 vs. 3 Tesla: a validation study. (ox.ac.uk)
  • PURPOSE: To compare cardiac cine MR imaging using steady state free precession (SSFP) and fast low angle shot (FLASH) techniques at 1.5 and 3 T, and to establish their variabilities and reproducibilities for cardiac volume and mass determination in volunteers. (ox.ac.uk)
  • Using transthoracic ultrasound Doppler at the level of the aortic valve, we compared blood flow velocities in the left ventricle and cardiac frequencies during rest and at 1, 3 and 4 min after a bout of exercise in 13 adult bottlenose dolphins ( Tursiops truncatus , six male and seven female, body mass range 143-212 kg). (biologists.org)
  • Total volume (TV), red cell volume (RCV) and plasma volume (PV) measurements were performed (41 CFS and 10 controls) using the indicator dilution technique using simultaneous 51-chromium labelling of red blood cells and 125-iodine labelling of serum albumin. (prohealth.com)
  • There were no relationships between any MR or volume measurements and length of history, suggesting that deconditioning was unlikely to be the cause of these abnormalities. (prohealth.com)
  • Measurements were made before infusion, at volumes 5, 12.5 and 20 ml kg-1 and 1 h later. (biomedsearch.com)
  • Most clinical applications tend to focus upon a particular set of organ structures, and in the case of cardiac imaging, it would be helpful to embed anatomical features into the dynamic volume that are of particular importance to an intervention. (spie.org)
  • Mycobacterium chimaera infection following cardiac surgery in the United Kingdom: clinical features and outcome of the first 30 cases. (cdc.gov)
  • SV is the difference between end diastolic volume (EDV) and end systolic volume (ESV). (deltexmedical.com)
  • Due to the Frank-Starling mechanism, the next ventricular contraction is more forceful, leading to the ejection of the larger than normal volume of blood, and bringing the LV end-systolic volume back to baseline. (wikipedia.org)
  • Since the next ventricular contraction occurs at its regular time, the filling time for the LV increases, causing an increased LV end-diastolic volume. (wikipedia.org)
  • This reduced compliance results in an inadequate filling of the ventricle and a decrease in the end-diastolic volume. (wikipedia.org)
  • Relationship between hospital procedure volume and complications following cardiac catheterization: a report from the IMPACT Registry. (chop.edu)
  • However, after adjusting for patient- and procedure-level factors, there was no significant association between center volume and outcome. (chop.edu)
  • The Cardiac Surgery in Pennsylvania 2005 report provides information for coronary artery bypass graft (CABG) and valve surgeries. (phc4.org)
  • Global health estimate of invasive Mycobacterium chimaera infections associated with heater-cooler devices in cardiac surgery. (cdc.gov)
  • Lamagni T , Charlett A , Phin N , Zambon M , Chand M. Invasive Mycobacterium chimaera infections hand heater-cooler devices in cardiac surgery. (cdc.gov)
  • As a larger volume of blood flows into the ventricle, the blood stretches the cardiac muscle fibers, leading to an increase in the force of contraction. (wikipedia.org)
  • In contrast, the normal point of cardiac muscle cells, in a resting individual, is lower than the optimal length for contraction. (wikipedia.org)
  • The stretching of the muscle fibers augments cardiac muscle contraction by increasing the calcium sensitivity of the myofibrils, causing a greater number of actin-myosin cross-bridges to form within the muscle fibers. (wikipedia.org)
  • In many types of cardiology procedures, there is an association between higher institutional volume and improved outcomes. (chop.edu)
  • citation needed] An increase in filling of the ventricle increases the load experienced by each cardiac muscle fiber, stretching the fibers toward their optimal length. (wikipedia.org)
  • Field strength does not have an influence on quantification of cardiac volume or mass, but the systematic overestimation of LV mass and underestimation of LV volume by FLASH compared to SSFP is present at both 1.5 and 3 T. Normal values for cardiac volumes and mass established at 1.5 T can be applied to scans obtained at 3 T. (ox.ac.uk)
  • Our algorithm produces high image quality in real-time without introducing intermixing artifacts in the rendered 4-dimensional (4D) cardiac volumes. (spie.org)
  • This study confirms an association between reduced cardiac volumes and blood volume in CFS. (prohealth.com)
  • The study team identified all congenital cardiac catheterizations from 2011 to 2013 at 64 institutions in the IMPACT (Improving Pediatric and Adult Congenital Treatment) Registry. (chop.edu)
  • Lack of relationship between length of disease, cardiac and plasma volumes suggests findings are not secondary to deconditioning. (prohealth.com)
  • A significant correlation was found between total blood volume (TBV) and EDV before (r = 0.66, p less than 0.005) and after dialysis (r = 0.61, p less than 0.001). (ahajournals.org)
  • The relationship between plasma volume and severity of fatigue symptoms suggests a potential therapeutic target in CFS. (prohealth.com)
  • Andrew C. Glatz, MD , and colleagues investigated whether such a relationship occurs in congenital cardiac catheterization. (chop.edu)
  • His data was analyzed on a pressure-volume diagram, which resulted in his description of peak isovolumic pressure and its affects on ventricular volume. (wikipedia.org)
  • CMR is currently the reference method to assess cardiac volumes but has not been used to assess LV remodeling after MitraClip™ implantation so far. (biomedcentral.com)