The specialty of ANALYTIC CHEMISTRY applied to assays of physiologically important substances found in blood, urine, tissues, and other biological fluids for the purpose of aiding the physician in making a diagnosis or following therapy.
Health care professionals, technicians, and assistants staffing LABORATORIES in research or health care facilities.
A subspecialty of pathology applied to the solution of clinical problems, especially the use of laboratory methods in clinical diagnosis. (Dorland, 28th ed.)
Techniques used to carry out clinical investigative procedures in the diagnosis and therapy of disease.
Facilities equipped to carry out investigative procedures.
The specialty related to the performance of techniques in clinical pathology such as those in hematology, microbiology, and other general clinical laboratory applications.
Devices for continuously measuring and displaying the arterial blood 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)
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.
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
The use of focused short radio waves to produce local hyperthermia in an injured person or diseased body area.
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
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.
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.
Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.
Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.
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.
The number of RED BLOOD CELLS per unit volume in a sample of venous BLOOD.
Long-term maintenance hemodialysis in the home.
Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.
The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)
The time span between the beginning of physical activity by an individual and the termination because of exhaustion.
A regimen or plan of physical activities designed and prescribed for specific therapeutic goals. Its purpose is to restore normal musculoskeletal function or to reduce pain caused by diseases or injuries.
The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)
Tumors in any part of the heart. They include primary cardiac tumors and metastatic tumors to the heart. Their interference with normal cardiac functions can cause a wide variety of symptoms including HEART FAILURE; CARDIAC ARRHYTHMIAS; or EMBOLISM.
Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.
Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES.
General increase in bulk of a part or organ due to CELL ENLARGEMENT and accumulation of FLUIDS AND SECRETIONS, not due to tumor formation, nor to an increase in the number of cells (HYPERPLASIA).
The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
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.
Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.
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.
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 using x-ray transmission and a computer algorithm to reconstruct the image.
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.
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.
The hollow, muscular organ that maintains the circulation of the blood.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities.
Abnormally low BLOOD PRESSURE that can result in inadequate blood flow to the brain and other vital organs. Common symptom is DIZZINESS but greater negative impacts on the body occur when there is prolonged depravation of oxygen and nutrients.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
The resistance to the flow of either alternating or direct electrical current.
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.
A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
A condition of fainting spells caused by heart block, often an atrioventricular block, that leads to BRADYCARDIA and drop in CARDIAC OUTPUT. When the cardiac output becomes too low, the patient faints (SYNCOPE). In some cases, the syncope attacks are transient and in others cases repetitive and persistent.
An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.
A subgroup of cyclic nucleotide-regulated ION CHANNELS of the superfamily of pore-loop cation channels that are opened by hyperpolarization rather than depolarization. The ion conducting pore passes SODIUM, CALCIUM, and POTASSIUM cations with a preference for potassium.
The field of information science concerned with the analysis and dissemination of data through the application of computers.
The physiological mechanisms that govern the rhythmic occurrence of certain biochemical, physiological, and behavioral phenomena.

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)

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
Dive into the research topics of Right ventricular volume measurement with single-plane Simpsons method based on a new half-circle model. Together they form a unique fingerprint. ...
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TY - JOUR. T1 - Right ventricular volume measurement by conductance catheter. AU - Danton, Mark H D. AU - Greil, Gerald F.. AU - Byrne, John G.. AU - Hsin, Michael. AU - Cohn, Lawrence. AU - Maier, Stephan E.. PY - 2003/10/1. Y1 - 2003/10/1. N2 - Continuous ventricular volume measurement by the conductance method assumes a homogeneous electrical field dispersed throughout and contained within the ventricle. Because of dense trabeculation and complex geometry, right ventricular (RV) volume description by this method may be seriously compromised. This study sought to determine the accuracy and limitations of RV volume measurement by conductance, with magnetic resonance (MR) imaging (MRI) used as a reference, in the porcine RV. Anesthetized pigs (n = 5, 45-55 kg) were placed in a 1.5-T magnet, and ECG-gated transverse MR images (5-mm slices) were acquired during the complete cardiac cycle. RV cavity volumes were subsequently determined by Simpsons technique. Animals were then instrumented with an ...
The 1.2 release of the ACUSON SC2000 volume imaging ultrasound system delivers nonstitched, real-time, full-volume imaging of the heart in one heart cycle. The system allows automatic extraction of reference planes from continuous cardiac volume imaging for measurement, analysis, and interpretation. New to the ACUSON SC2000 system is the IN Focus coherent imaging technology. Without the need to continuously set and select a given location of best focus, IN Focus technology sharpens the full-field image at all times without sacrificing frame rate. Siemens offer knowledge-based workflow applications, which are designed to automate measurements for rapid, accurate and reproducible results. syngo Velocity Vector Imaging (VVI) technology instantaneously measures motion at any point in the cardiac cycle. syngo Auto Left Heart (Auto LH) technology automatically generates left atrial and left ventricular volumes and ejection fractions rapidly and reliably. syngo Arterial Health Package (AHP) provides ...
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 ...
Product family includes biplane and floor single-plane angiography systems designed to improve interventional lab utilization and interdisciplinary usage
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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.
TY - JOUR. T1 - Feasibility and Accuracy of Automated Software for Transthoracic Three-Dimensional Left Ventricular Volume and Function Analysis. T2 - Comparisons with Two-Dimensional Echocardiography, Three-Dimensional Transthoracic Manual Method, and Cardiac Magnetic Resonance Imaging. AU - Tamborini, Gloria. AU - Piazzese, Concetta. AU - Lang, Roberto M.. AU - Muratori, Manuela. AU - Chiorino, Elisa. AU - Mapelli, Massimo. AU - Fusini, Laura. AU - Ali, Sarah Ghulam. AU - Gripari, Paola. AU - Pontone, Gianluca. AU - Andreini, Daniele. AU - Pepi, Mauro. PY - 2017/11/1. Y1 - 2017/11/1. N2 - Background Recently, a new automated software package (HeartModel) was developed to obtain three-dimensional (3D) left ventricular (LV) volumes using a model-based algorithm (MBA) with a one-button simple system and user-adjustable slider. The aims of this study were to verify the feasibility and accuracy of the MBA in comparison with other commonly used imaging techniques in a large unselected population, ...
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 ...
Sieslack AK, Dziallas P, Nolte I, et al. BMC Vet Res 2014;10:242. BackgroundRight ventricular (RV) volume and function are important diagnostic and prognostic
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
The relationship between R-wave amplitude and left ventricular volume was examined using two groups of patients, undergoing diagnostic cardiac catheterisation for investigation of chest pain, who had simultaneous R-wave recording and left ventricular angiography. R-wave amplitude was measured in leads 1, 2, 3 and V4-6. Left ventricular volume was altered by nitroglycerine (n = 18) and atrial pacing (n = 13). In both groups, increase or decrease in left ventricular volume was associated with a concomitant change of R-wave amplitude. We conclude that left ventricular volume is an important determinant of surface-recorded R waves with increased amplitude reflecting increased left ventricular volume and vice versa.
We report the first comparison of cardiovascular magnetic resonance imaging (CMR) at 1.5T, 3T and 7T field strengths using steady state free precession (SSFP) and fast low angle shot (FLASH) cine sequences. Cardiac volumes and mass measurements were assessed for feasibility, reproducibility and validity at each given field strength using FLASH and SSFP sequences. Ten healthy volunteers underwent retrospectively electrocardiogram (ECG) gated CMR at 1.5T, 3T and 7T using FLASH and SSFP sequences. B1 and B0 shimming and frequency scouts were used to optimise image quality. Cardiac volume and mass measurements were not significantly affected by field strength when using the same imaging sequence (P|0.05 for all parameters at 1.5T, 3T and 7T). SSFP imaging returned larger end diastolic and end systolic volumes and smaller left ventricular masses than FLASH imaging at 7T, and at the lower field strengths (P|0.05 for each parameter). However, univariate general linear model analysis with fixed effects for
Cardiac tamponade arises due to equalisation of cardiac pressures leading to impaired biventricular filling. The pericardial sack has some elasticity which is quickly reached with fluid accumulation. Cardiac volume becomes smaller during systole and venous return shifts to cardiac systole to reduce cardiac output. Normally, systemic venous return to the right side of the heart increases with inspiration and pulmonary venous return to the left heart decreases with inspiration so that systemic arterial pressure normally falls by ,10 mmHg during inspiration.. In cardiac tamponade, the rigid pericardium prevents the free wall from expanding. Thus, the distension of the right ventricle is limited to the interventricular septum and this causes the septum to bulge to the left, reducing left ventricular compliance and contributing to further decreased filling of the left ventricle during inspiration. This leads to an exaggerated drop in systolic blood pressure in inspiration called pulsus paradoxus. Our ...
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 ...
TY - JOUR. T1 - Intracardiac echocardiographic measurement of left ventricular volume. AU - Ding, C.. AU - Rao, L.. AU - Nagueh, Sherif. AU - Khoury, D. S.. PY - 2004/12/1. Y1 - 2004/12/1. N2 - We tested the utility of intracardiac echocardiography (ICE) in measuring left ventricular (LV) volume. In 4 normal dogs, a 10-F percutaneous sheath was placed inside the LV along its major axis. An ICE catheter (9 F, 9 MHz) was then inserted through the sheath into the LV. The ICE catheter was pulled back in 1-mm intervals starting from the apex, and 2-D tomographic images were continuously acquired. Subsequently, the ICE catheter was replaced in the LV by a conductance catheter to measure single-beat volume signals. Stroke volume was determined by thermodilution for validation. All measurements were made in each dog while pacing the atrium at two different cycle lengths (range=300-500 ms). The endocardium was segmented in the ICE images throughout the cardiac cycle, and LV volume was computed by ...
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 ...
Min Zi, a cardiovascular researcher from the University of Manchester uses PV Loop and hemodynamic analyses to investigate the molecular processes that lead to the development of cardiac hypertrophy with the goal to uncover new and effective treatments of the disease.
A pressure-volume (PV) loop for the left ventricle is generated as left ventricular pressure is plotted against left ventricular volume at multiple time points during a complete cardiac cycle. [More… ...
S in ventricular cross-sectional area to estimates of ventricular volume over the beat cycle.Automated In Vivo Hypercholesterolemia ScreenFigure 4. Waveform
Liver segmentation and volume determination using automatic vs. semi-automatic methods A. Emre Kavur, Naciye Sinem Gezer, Mustafa Barış, Yusuf Şahin, Savaş Özkan, Bora Baydar, Ulaş Yüksel, Çağlar Kılıkçıer, Şahin Olut, Gözde Bozdağı Akar, Gözde Ünal, Oğuz Dicle, M. Alper Selver. ...
We offer clinical cancer updates, treatment guidance, and research news to the oncology nursing community. Visit us often for drug therapy testing results, patient care information and more. Download our FREE app today.
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 ...
We postulated that changes in cardiac high-energy phosphate metabolism may underlie the myocardial dysfunction caused by hypobaric hypoxia. Healthy volunteers (n=14) were studied immediately before, and within 4 d of return from, a 17-d trek to Mt. Everest Base Camp (5300 m). (31)P magnetic resonance (MR) spectroscopy was used to measure cardiac phosphocreatine (PCr)/ATP, and MR imaging and echocardiography were used to assess cardiac volumes, mass, and function. Immediately after returning from Mt. Everest, total body weight had fallen by 3% (P|0.05), but left ventricular mass, adjusted for changes in body surface area, had disproportionately decreased by 11% (P|0.05). Alterations in diastolic function were also observed, with a reduction in peak left ventricular filling rates and mitral inflow E/A, by 17% (P|0.05) and 24% (P|0.01), respectively, with no change in hydration status. Compared with pretrek, cardiac PCr/ATP ratio had decreased by 18% (P|0.01). Whether the abnormalities were even greater at
We examined possible age- and gender-specific differences in the function and mass of left (LV) and right (RV) ventricles in 36 healthy volunteers using cine gradient-recalled echo magnetic resonance imaging. Subjects were divided into four groups (nine men and nine women in each): men aged under 45 years (32 +/- 7), women aged under 45 (27 +/- 6), men aged over 45 (59 +/- 8), and women aged over 45 (57 +/- 9). Functional analysis of cardiac volume and mass and of LV wall motion was performed by manual segmentation of the endocardial and epicardial borders of the end-diastolic and end-systolic frame; both absolute and normalized (per square meter body surface area) values were evaluated. With age there was a significant decrease in both absolute and normalized LV and RV chamber volumes (EDV, ESV), while LV and RV masses remained unchanged. Gender-specific differences were found in cardiac mass and volume (for men and women, respectively: LV mass, 155 +/- 18 and 110 +/- 16 g; LV EDV, 118 +/- 27 and 96 +/
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
Nuclear fuel technology - Tank calibration and volume determination for nuclear materials accountancy - Part 6: Accurate in-tank determination of liquid density in accountancy tanks equipped with dip tubes
TY - JOUR. T1 - Evaluation of myocardial volume heterogeneity during end-diastole and end-systole using cine MRI. AU - Swingen, Cory. AU - Wang, Xiaoen. AU - Jerosch-Herold, Michael. PY - 2004. Y1 - 2004. N2 - The aim of this study was to examine the difference in the myocardial volume between end-diastole and end-systole in 24 human volunteers, using steady-state free precession gradient-echo cine imaging of both long- and short-axis views of the left ventricle and a newly developed three-dimensional (3D) analysis method. In addition, we examined retrospectively the cine magnetic resonance imaging (MRI) studies from 20 of the subjects that included a stack of short-axis views, from base to apex, suitable for a standard two-dimensional (2D) analysis. With the 3D analysis method, no significant variance in the myocardial volume was found (mean difference=0.1%±9.1%, p=0.88) between end-diastole (ED) and end-systole (ES), while the 2D technique yielded significantly larger values for the LV ...
TY - JOUR. T1 - Accuracy of the long-axis area-length method for the measurement of left ventricular volumes and ejection fraction using multidetector computed tomography. AU - Lessick, Jonathan. AU - Ghersin, Eduard. AU - Abadi, Sobhi. AU - Yalonetsky, Sergey. PY - 2008. Y1 - 2008. N2 - Background: Multidetector computed tomography (MDCT) is useful for assessing left ventricular (LV) volumes and function. Validation has mainly been carried out using Simpsons method of summing up consecutive short-axis areas. Because the latter method is time-consuming, many users prefer using a quicker method, based on a single view or a pair of views. Objectives: To evaluate the accuracy of the long-axis area-length method (AL), which has not been validated for MDCT, using Simpsons method as the gold standard, as well as right anterior oblique LV angiography as a clinical standard. Methods: Twenty-three patients admitted with acute chest pain were clinically evaluated with electrocardiogram-gated MDCT and ...
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 - ...
Objetivos: Avaliar e descrever os desfechos maternos e neonatais de gestantes com diagnóstico de cervicodilatação precoce submetidas à cerclagem de emergência ou à conduta expectante com repouso. Avaliar...
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. ...
Gas adsorption analysis is not only used for the determination of BET-surface area but for the analysis of pore size distribution and total pore volume determination as well.
Bic Clic Stic Ecolution Pen Clic Stic Ecolutions Promotional Pens Made with 62% pre-consumer plastic Add a Recycled Symbol to your imprint at no additional charge.
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 ...
Cardiac output is dependent on stroke volume and heart rate. A significant portion (55-77%) of HFpEF patients are unable to ... the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when ... Cardiac macrophages are thought to play an important role in the development of fibrosis as they are increased in HFpEF and ... Estafanous, F.G. (2001). Cardiac anesthesia 2 Ed: Principles and clinical practice (2 ed.). Lippincott Williams & Wilkins. ISBN ...
Different calcium channels are present in vascular tissue and cardiac tissue; an in vitro study on human vascular and cardiac ... Volume 3: Cardiovascular Agents and Endocrines (6th ed.). Hoboken, N.J.: Wiley. ISBN 9780471270904. "Merck's Plendil ( ... Joshi, Gajanan S.; Burnett, James C.; Abraham, Donald J. (2003). "Cardiac Drugs: Antianginal, Vasodilators, Antiarrhythmic". In ... how selective various calcium channel blockers are for vascular compared to cardiac tissue found the following vascular/cardiac ...
"Impact of Medicaid Expansion on Cardiac Surgery Volume and Outcomes". Ann. Thorac. Surg. 104 (4): 1251-1258. doi:10.1016/j. ...
A widow maker cannot kill instantly but induces cardiac arrest which may do so within 10 to 20 minutes of no circulation. A ... Richard Beebe; Jeff Myers (11 December 2009). "34". Professional Paramedic, Volume I: Foundations of Paramedic Care. Cengage ... Heart attack Cardiac vessels Human heart with coronary arteries Heart coronary territories This article incorporates text in ... The LAD is frequently implicated in sudden cardiac death, predominantly in adult males. Clinicians often refer to the LAD as ...
Cardiac output is the product of stroke volume and heart rate. Stroke volume is influenced by 1) the end diastolic volume or ... In the short-term, the greater the blood volume, the higher the cardiac output. This has been proposed as an explanation of the ... The resultant increase in blood volume results in an increased cardiac output by the Frank-Starling law of the heart, in turn ... MAP is the average of blood pressure over a cardiac cycle and is determined by the cardiac output (CO), systemic vascular ...
Cardiac output (Lit./Min.): 6.26 Stoke Volume (Ml.): 75 Heart Rate (Per min.): 85 Blood Pressure: Unaffected Cardiac output ... Estrogen mediates this rise in cardiac output by increasing the pre-load and stroke volume, mainly via a higher overall blood ... During pregnancy the plasma volume increases by 40-50% and the red blood cell volume increases only by 20-30%. These changes ... and leads to a decrease in expiratory reserve volume and residual volume. This culminates in a 20% decrease in functional ...
Volume 56 of Advances in Protein Chemistry. Eds. Richards FM, Eisenberg DS, and Kim PS. Series Ed. Scolnick EM. Academic Press ... fatal cardiac events, and kidney injury. Dose reduction may be required when creatinine clearance is less than or equal to 30mL ... ISBN 978-0-07-176401-8. Reddi, Alluru (2018). "Disorders of ECF Volume: Nephrotic Syndrome". Fluid, Electrolyte and Acid-Base ... Cardiac Drug Therapy. New York: Springer. ISBN 978-1-61779-962-4. "Lisinopril". PubChem. Retrieved 6 June 2018. Patlak M (March ...
In cardiology, an Austin Flint murmur is a low-pitched rumbling heart murmur which is best heard at the cardiac apex. It can be ... The Topol Solution: Textbook of Cardiovascular Medicine, Third Edition with DVD, Plus Integrated Content Website, Volume 355. ... "On cardiac murmurs". American Journal of the Medical Sciences. 44: 29-54. Eric J. Topol. ...
Cardiac autoimmunity in HIV related heart muscle disease. Heart 1998;79:599-604. Lipshultz SE, Easley KA, Orav EJ, et al. ... Braunwald's, Heart Disease A Textbook of Cardiovascular Medicine, Volume II, 1793-1805. Bijl M, Dieleman JP, Simoons M, et al. ... Nutritional status and cardiac mass and function in children infected with the human immunodeficiency virus. Am J Clin Nutr ... Cardiac dysfunction in the HIV-1 transgenic mouse treated with zidovudine. Lab Invest 2000;80:187-97. Lewis W, Simpson JF, ...
Part 1". Annals of Cardiac Anaesthesia. 14 (3): 218-229. doi:10.4103/0971-9784.84030. PMID 21860197. Retrieved May 7, 2014. CS1 ... Volume 2. Elsevier Health Sciences. p. 8. ISBN 978-0323091619. Chauhan, S., Subin, S. (2011). "Extracorporeal membrane ...
Entomophaga 1990, Volume 35, Issue 3, pp 431-435 (abstract) Sztab, Lin; Henderson, Lesley (2015). "Rubber vine" (PDF). arc. ... ISBN 3-923381-27-1. Radford, Dorothy J.; Gillies, Andrew D.; Hinds, John A. and Duffy, Patrick; 'Naturally Occurring Cardiac ...
"Peripherally inserted veno-venous ultrafiltration for rapid treatment of volume overloaded patients". Journal of Cardiac ... Aug 1993). "Sustained cardiac diastolic changes elicited by ultrafiltration in patients with moderate congestive heart failure ... "Sustained improvement in functional capacity after removal of body fluid with isolated ultrafiltration in chronic cardiac ... Fluid balance Fluid overload Blood volume Diuretics Apheresis Congestive Heart Failure Hypervolemia Ultrafiltration (renal) ...
Afterload Cardiac output Frank-Starling law of the heart Passive leg raising test Volume overload "CV Physiology: Preload". www ... In cardiac physiology, preload is the amount of sarcomere stretch experienced by cardiac muscle cells, called cardiomyocytes, ... Sarcomere length can be approximated by the volume of the ventricle because each shape has a conserved surface-area-to-volume ... These are affected by venous tone and volume of circulating blood. Preload is related to the ventricular end-diastolic volume; ...
Estrogen mediates this rise in cardiac output by increasing the pre-load and stroke volume, mainly via a higher overall blood ... During pregnancy the plasma volume increases by 40-50% and the red blood cell volume increases only by 20-30%.[15] These ... and leads to a decrease in expiratory reserve volume and residual volume. This culminates in a 20% decrease in functional ... Cardiac output increases throughout early pregnancy, and peaks in the third trimester, usually to 30-50% above baseline.[3] ...
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 ... Bradycardia and cardiac output[edit]. Bradycardia is the response to facial contact with cold water: the human heart rate slows ... Cardiac arrhythmias are a common characteristic of the human diving response.[2][19] As part of the diving reflex, increased ...
The book was expanded into two volumes for a second edition published in 1960. Taussig later became an associate professor at ... Taussig, Helen B. (1988). "Evolutionary origin of cardiac malformations". Journal of the American College of Cardiology. 12 (4 ... "Congenital Malformations of the Heart, Volume I: General Considerations - Helen B. Taussig , Harvard University Press". www.hup ... Annals of Cardiac Anaesthesia. 20 (3): 323-330. doi:10.4103/aca.ACA_80_17. ISSN 0971-9784. PMC 5535574. PMID 28701598. Bailey, ...
Corno AF, Festa GP (2009). Congenital heart defects : decision making for cardiac surgery. Volume 3, CT-scan and MRI. Darmstadt ... In this case, cardiac catheterization can be done. Form a genetics perspective, it is important to screen for DiGeorge in all ... Pediatric Cardiac Surgery Annual. 12: 19-38. doi:10.1053/j.pcsu.2009.01.004. PMID 19349011. Fallot A (1888). Contribution à ... Additional reparative or reconstructive surgery may be done on patients as required by their particular cardiac anatomy. Timing ...
Cardiac volume increases 27-30%. Oxygen consumption is increased with exercise, and heart rate is increased at higher ... However, immersion can worsen effects in cases of valvular insufficiency due to this cardiac and stroke volume increase. The ... During immersion, blood is displaced upwards into heart and there is an increase in pulse pressure due to increased cardiac ... Muscle blood flow increases by about 225% during immersion, as increased cardiac output is distributed to skin and muscle ...
Cardiac output is the product of stroke volume and heart rate, and stroke volume is influenced by blood volume. In the short- ... The resultant increase in blood volume results in an increased cardiac output by the Frank-Starling law of the heart, in turn ... MAP is the average of blood pressure over a cardiac cycle and is determined by the cardiac output (CO), systemic vascular ... term, the greater the blood volume, the higher the cardiac output. This may explain in part the relationship between dietary ...
Domperidone: risks of cardiac side effects. Drug Safety Update 7 (10), A1. Moayyedi, P., Santana, J., Khan, M., et al., 2011. ... Laparoscopic bariatric surgery, Volume 1. William B. Inabnet, Eric J. DeMaria, Sayeed Ikramuddin. ISBN 0-7817-4874-7.[page ...
cardiac failure, nephrotic syndrome, and pregnancy. Schrier received awards from the American College of Physicians (John ... His research contributions center on autosomal dominant polycystic kidney disease, and pathogenesis of acute fluid volume in ...
... 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 ...
Ugander M, Carlsson M, Arheden H (February 2010). "Short-axis epicardial volume change is a measure of cardiac left ventricular ... Pumping volume[edit]. The typical healthy adult heart pumping volume is ~5 liters/min, resting. Maximum capacity pumping volume ... including end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV) and ejection fraction (Ef). ... Wiggers diagram of various events of a cardiac cycle, showing left ventricular volume as a red trace. ...
Cardiac output (CO), the volume of blood being pumped by the heart per time unit ...
Pressure-volume relationships in patients with transthyretin (ATTR) cardiac amyloidosis secondary to V122I mutations and wild- ... Transthyretin cardiac amyloid study (TRACS). Circ.: Heart Failure 4, 121-128. Miller, A. L., Falk, R. H., Levy, B. D. & ... Cardiac involvement is often identified with the presence of conduction system disease (sinus node or atrioventricular node ... Prog Cardiovasc Dis 52, 262-3. Snyder, M. E., Haidar, G. R., Spencer, B. & Maurer, M. S. (2011). Transthyretin cardiac ...
Cardiac output is dependent on stroke volume and heart rate. A significant portion (55-77%) of HFpEF patients are unable to ... the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when ... Cardiac macrophages are thought to play an important role in the development of fibrosis as they are increased in HFpEF and ... The benefit patients seem to derive from exercise does not seem to be a direct cardiac effect but rather is due to changes in ...
Cardiac output is the product of stroke volume and heart rate. Afterload is a determinant of stroke volume (in addition to ... As afterload increases, cardiac output decreases. Cardiac imaging is a somewhat limited modality in defining afterload because ... This may start a vicious circle, in which cardiac output is reduced as oxygen requirements are increased. Afterload can also be ... Cardiac output Hemodynamics Preload Mohrman, David E. (2018). Cardiovascular Physiology, 9e. McGraw-Hill Education LLC. ISBN ...
He died in 1995 from cardiac arrest. His large abstract sculptures build on inspiriation of empty spaces delimited by volume. ...
... has been used experimentally to treat cardiac hypertrophy[24][57] (an increase in cell volume). ... allows for reversal of cardiac hypertrophy caused in the original cardiac response.[27] Decreasing the release of cytochrome C ... CsA (cyclosporin A) has been shown to decrease cardiac hypertrophy by affecting cardiac myocytes in many ways. CsA binds to ... cause inappropriate MPTP opening leading to a decrease in the cardiac range of function, leading to cardiac hypertrophy as an ...
The increase in pulmonary blood volume along with a decrease in cardiac output will increase the pulmonary transudative ... Pulmonary edema, especially when sudden (acute), can lead to respiratory failure or cardiac arrest due to hypoxia. It is a ... It is possible for cardiogenic pulmonary edema to occur together with cardiogenic shock, in which the cardiac output is ... The negative pressure causes a significant increase in preload, thereby increasing pulmonary blood volume. There is also a ...
The official cause of death was cardiac arrhythmia, although toxicology reports strongly suggested that polypharmacy was the ... Elvis' Gold Records Volume 5. *Amazing Grace: His Greatest Sacred Performances. *Command Performances: The Essential 60s ...
Main article: Cardiac PET. Cardiology, atherosclerosis and vascular disease study: In clinical cardiology, FDG-PET can identify ... This necessitates frequent recalibration of the remaining dose (determination of activity per unit volume) and careful planning ... then reconstruct the entire volume together (3D). ...
Boyle, P. R. (2013). "Neural Control of Cephalopod Behavior". In Dennis Willows, A.O. The Mollusca, Volume 8: Neurobiology and ... "The control of ventilatory and cardiac responses to changes in ambient oxygen tension and oxygen demand in Octopus". The ...
e.g. mentioned on p. 167 in [1] Econ Journal Watch, Volume 5, Number 2, pp. 163-168. Retrieved 19 November 2009. ... A 2012 meta-analysis found that smoke-free legislation was associated with a lower rate of hospitalizations for cardiac, ... tobacco industry volume. Smokers facing these restrictions consume 11%-15% less than average and quit at a rate that is 84% ... "Association between smoke-free legislation and hospitalizations for cardiac, cerebrovascular, and respiratory diseases: a meta ...
... operates the North America's 18th-largest university research library with a combined collection of over 5.8 million volumes. ... Cardiac & Cardiovascular Systems. 88 Chemistry. 143 Clinical Medicine. 45 Computer Science. 181 ...
Individuals with early disseminated or late Lyme infection may have symptomatic cardiac disease, Lyme arthritis, or neurologic ... CS1: long volume value. *CS1 Polish-language sources (pl). *Wikipedia articles incorporating text from the Centers for Disease ... "Detection of Borrelia bissettii in cardiac valve tissue of a patient with endocarditis and aortic valve stenosis in the Czech ...
CS1: long volume value. *All articles with unsourced statements. *Articles with unsourced statements from August 2020 ...
Brown began having heart problems in 1968 after suffering a severe heart attack, and underwent cardiac surgery. He died from ... Volume 49, page 1. ...
... since density is defined as mass per unit volume. The first factor depends on the volume of the atom and thus the atomic radius ... and acute cardiac arrest,[242] but such amounts would not ordinarily be encountered in natural sources.[243] As such, caesium ... and thus the only relevant factors are the number of atoms that can fit into a certain volume and the mass of one of the atoms ... which increases going down the group; thus, the volume of an alkali metal atom increases going down the group. The mass of an ...
The physical examination typically includes an assessment of volume state, blood pressure, heart, lungs, peripheral arteries, ... and blood volume and electrolyte disturbance may need correction. ...
Biology of the Reptilia is an online copy of the full text of a 22 volume 13,000 page summary of the state of research of ... cardiac involuntary muscles.[68] The main structures of the heart are the sinus venosus, the pacemaker, the left atrium, the ... In large reptiles, like leatherback turtles, the low surface-to-volume ratio allows this metabolically produced heat to keep ...
Volume 37, Issue 2, P. 289-294 ... Cardiac MRI/Cardiac MRI perfusion. *MR angiography. *MR ...
Infants in cardiac ICUsEdit. In studies on music therapy with infants in the cardiac intensive care unit, music therapy has ... Kobialka is a type of new age music that produces large volume music that has violins playing over the background of ... Yurkovich, Jennifer (March 5, 2018). "The Effect of Music Therapy Entrainment on Physiologic Measures of Infants in the Cardiac ...
editors, volume; Besedovsky, Hugo; Chrousos, George; Rey, Adriana Del (2008). The hypothalamus-pituitary-adrenal axis (1st ed ... Whereas maternal care improves cardiac response, sleep/wake rhythm, and growth hormone secretion in the neonate, it also ...
In one series of famous experiments on the cardiac ganglion in lobsters, Bullock demonstrated that neurons can communicate not ... In 1965 together with Adrian Horridge, Bullock published the seminal two-volume "bible of invertebrate neurobiology": Structure ...
regulation of heart rate by cardiac conduction. • membrane depolarization during cardiac muscle cell action potential. • ... "Effects of the CACNA1C risk allele for bipolar disorder on cerebral gray matter volume in healthy individuals". The American ... membrane depolarization during atrial cardiac muscle cell action potential. • cardiac muscle cell action potential involved in ... It depolarizes at -30mV and helps define the shape of the action potential in cardiac and smooth muscle.[8] The protein encoded ...
a flow-volume loop, which graphically depicts the rate of airflow on the Y-axis and the total volume inspired or expired on the ... and to distinguish respiratory from cardiac disease as the cause[5] ... Forced expiratory volume in 1 second (FEV1)[edit]. FEV1 is the volume of air that can forcibly be blown out in one second, ... Tidal volume (TV)[edit]. Tidal volume is the amount of air inhaled or exhaled normally at rest. ...
Richardson, L (November 2014). "Cardiac tamponade". JAAPA : official journal of the American Academy of Physician Assistants. ... low blood volume) ଥଲେ ଶିରାଭ୍ୟନ୍ତର ତରଳ ପଦାର୍ଥ ଦିଆଯାଏ ।[୨] ଅଳ୍ପ ଲକ୍ଷଣ ଥିଲେ ବା ଚିନ୍ତାଜନ‌କ ଲକ୍ଷଣ ନଥିଲେ ଅନୁଧାବନ କରାଯାଇପାରେ ।[୧] ରୋଗର ... Spodick, DH (Aug 14, 2003). "Acute cardiac tamponade". The New England Journal of Medicine. 349 (7): 684-90. doi:10.1056/ ... କାର୍ଡ଼ିଆକ ଟାମ୍ପୋନେଡ (ଇଂରାଜୀ ଭାଷାରେ Cardiac tamponade ବା pericardial tamponade) ନାମ ଦିଆଯାଏ ଯେତେବଳେ ହୃତ୍‌ପିଣ୍ଡ ଚାରିପାଖରେ ଥିବା ...
Eccentric contractions and cardiac output: With lower cost of oxygen how would eccentric exercise affect the heart? A study was ... Early, high-force eccentric training can be used to increase muscle strength and volume without damage to the ACL graft, ... The unique trait of greater overloads to the muscle with less strenuous impact on the body, as well as cardiac and respiratory ... Add to these factors disease and cardiac and respiratory illness. Eccentric training enables the elderly, and those with the ...
Tobacco Smoke and Involuntary Smoking, IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, Volume 83 (2004). ... Acharya, PV Narasimh; Irreparable DNA-Damage by Industrial Pollutants in Pre-mature Aging, Chemical Carcinogenesis and Cardiac ... "Agents Classified by the IARC Monographs, Volumes 1-110" (PDF). http://monographs.iarc.fr/. 2014년 8월 19일에 확인함.. ,publisher=. 에 ...
Pressure control ventilation is more versatile than volume control, although breaths should be volume limited, to prevent ... Gas exchange is affected by increases in the dispersion of both alveolar ventilation and cardiac output because bronchial and ... Given the volume and ease of chlorine for industrial and commercial use, exposure could occur from an accidental spill or a ... reduces resting lung volumes (decreased compliance), increasing ventilation-perfusion mismatch, right to left shunt and the ...
cardiac muscle contraction. • muscle cell cellular homeostasis. • neuromuscular process controlling posture. • locomotory ...
Spider-Girl battled her once again and finally took her down.[volume & issue needed] ... Cardiac. *Carlie Cooper. *Daredevil/Matt Murdock. *Jean DeWolff. *Fantastic Four *Mr Fantastic ...
Main article: Volume expander. There are two main types of volume expander: crystalloids and colloids. Crystalloids are aqueous ... Advanced cardiac life support (ACLS). *Advanced trauma life support (ATLS). *Neonatal Resuscitation Program (NRP) ... The volume to be infused (VTBI) of the mainline IV bag is usually programmed for about 50 milliliters less than the stated ... Volume expanders may either be isotonic, hypotonic, or hypertonic. Hypotonic fluids are not generally recommended in children ...
When the treatment volume conforms to the shape of the tumor, the relative toxicity of radiation to the surrounding normal ... Taylor CW, Nisbet A, McGale P, Darby SC (December 2007). "Cardiac exposures in breast cancer radiotherapy: 1950s-1990s". ... The aim of simulation is to accurately target or localize the volume which is to be treated. This technique is well established ... The radiation dose intensity is elevated near the gross tumor volume while radiation among the neighboring normal tissues is ...
CS1: long volume value. *CS1 errors: missing periodical. *CS1 maint: uses authors parameter ... Cardiac diet. *Diabetic diet. *Fluid restriction diet. *Gluten-free. *Gluten-free and casein-free ...
This can happen in response to a decrease in blood volume (through dehydration or bleeding), or an unexpected change in blood ... Unstable means that either important organ functions are affected or cardiac arrest is about to occur. In those that are ... Atrial fibrillation is one of the most common cardiac arrhythmias. In general, it is an irregular, narrow complex rhythm. ... Ventricular tachycardia (VT or V-tach) is a potentially life-threatening cardiac arrhythmia that originates in the ventricles. ...
CS1: long volume value. *Articles needing additional medical references from May 2015 ...
In 1951, he published The Mudd Family of the United States, an encyclopedic two-volume history of the Mudd family in America, ... On the episode "Swiss Diplomacy" on The West Wing, the first lady and cardiac surgeon, Dr. Abby Bartlet commented on the duty ... Volume 1 (Second ed.). Saginaw, Michigan: Dr. Richard D. Mudd. pp. 520 ff.. .mw-parser-output cite.citation{font-style:inherit ...
... esophagus has a mucous membrane and the epithelium which has a protective function is continuously replaced due to the volume ...
Volume 31-2 - 1st Edition. Print Book & E-Book. ISBN 9781455770656, 9781455771585 ... Purchase Cardiac Anesthesia, An Issue of Anesthesiology Clinics, ... Cardiac Anesthesia, An Issue of Anesthesiology Clinics, Volume ...
Volume 34-1 - 1st Edition. Print Book & E-Book. ISBN 9780323287104, 9780323287111 ... Purchase Cardiac Markers, An Issue of Clinics in Laboratory Medicine, ... Cardiac Markers, An Issue of Clinics in Laboratory Medicine, Volume 34-1 1st Edition. ... Topics in this clinically focused publication devoted to Cardiac Markers include: Overview of cardiac markers in heart disease ...
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 ...
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 ...
O2max improvement with the HIAT was greater than with the CAT despite the HIAT being performed with a far lower volume and in ... Effects of a low-volume aerobic-type interval exercise on VO2max and cardiac mass Med Sci Sports Exerc. 2014 Jan;46(1):42-50. ... Purpose: The aim of this study was to compare the effects of time-efficient, low-volume interval exercises on cardiorespiratory ... stroke volume (SV), and resting HR in both the SIT (LV mass, 6.5% ± 8.3%; SV, 5.3% ± 8.3%; HR, -7.3% ± 11.1%; all P , 0.05) and ...
Researchers studied the relationship between volume of cardiac catheterization procedures and major adverse events in patients ... major adverse events were highest in centers with the lowest volume, according to new data from the IMPACT registry. ... In patients with congenital heart disease undergoing cardiac catheterization, ... of procedures at low-volume centers, 1.5% of procedures at medium-volume centers, 2% of procedures at high-volume centers and ...
Early High-Volume Hemofiltration versus Standard Care for Post-Cardiac Surgery Shock. The HEROICS Study.. Combes A1, Bréchot N1 ... High-Volume Hemofiltration in Post-Cardiac Surgery Shock. A Heroic Therapy? [Am J Respir Crit Care Med. 2015] ... Post-cardiac surgery shock is associated with high morbidity and mortality. By removing toxins and proinflammatory mediators ... 4 Cardiac Surgery Department, Institute of Cardiometabolism and Nutrition, Hôpital de la Pitié-Salpêtrière, Assistance Publique ...
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, ...
Aortocaval fistula in rat: a unique model of volume-overload congestive heart failure and cardiac hypertrophy.. Abassi Z1, ... Aortocaval Fistula in Rat: A Unique Model of Volume-Overload Congestive Heart Failure and Cardiac Hypertrophy ... Aortocaval Fistula in Rat: A Unique Model of Volume-Overload Congestive Heart Failure and Cardiac Hypertrophy ... Aortocaval Fistula in Rat: A Unique Model of Volume-Overload Congestive Heart Failure and Cardiac Hypertrophy ...
... hospital volume ,100/surgeon volume ,75, hospital volume ,100/surgeon volume ,75, and so forth). Then, observed and risk- ... First, both hospital volume and surgeon volume are available as measures of provider volume, whereas Jenkins et al had access ... The same information is reported for two surgeon volume groups (annual volume ,75, annual volume 75 or more) in the bottom half ... Pediatric Cardiac Surgery: The Effect of Hospital and Surgeon Volume on In-hospital Mortality. Edward L. Hannan, Michael Racz, ...
Manchester uses PV Loop and hemodynamic analyses to investigate the molecular processes that lead to the development of cardiac ... Min explains that during the early stages of cardiac hypertrophy, the changes in ventricular pressure and volume cause the PV ... Cardiac hypertrophy is the abnormal enlargement, or thickening of the heart muscle, in response to an increase in cardiac ... Min regularly uses ventricular pressure-volume (PV) analyses to characterize and study cardiac hypertrophy. ...
Causes of Cardiac failure due to excessive volume overload, alternative diagnoses, rare causes, misdiagnoses, patient stories, ... Cardiac failure due to excessive volume overload. Cardiac failure due to excessive volume overload:*Causes: Cardiac failure due ... Cardiac failure *Cardiac *Cardiac symptoms (2927 causes) *Cardiac disease *Cardiac disorder *Failure *more symptoms...» Broaden ... Cardiac failure due to excessive volume overload *Cardiac failure due to excessive volume overload: Add a 2nd symptom *Cardiac ...
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 ...
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 ...
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. ...
... 2014-07-23 21:11:03 , BioPortfolio ... Home » Topics » Cardiology » Research » Molecular Mechanisms of Volume Overload-Aim 1(SCCOR in Cardiac Dysfunction and Disease) ... More From BioPortfolio on "Molecular Mechanisms of Volume Overload-Aim 1(SCCOR in Cardiac Dysfunction and Disease)". *Related ... Cardiac electrophysiology : Study of the electrical properties and conduction diseases of the heart. Echocardiography : The use ...
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 ...
Recently, the estimated continuous cardiac output (esCCO) system, which can monitor cardiac output (CO)... ... Hemodynamic monitoring is mandatory for perioperative management of cardiac surgery. ... Comparison of the ability of esCCO and volume view to measure trends in cardiac output in patients undergoing cardiac surgery. ... Cardiac output and stroke volume variation measured by the pulse wave transit time method: a comparison with an arterial ...
The aim of this study was to characterise the development of cardiac dilatation induced by chronic volume overload in 12 dogs. ... The aim of this study was to characterise the development of cardiac dilatation induced by chronic volume overload in 12 dogs. ... 19165175 - Uremic cardiac hypertrophy is reversed by rapamycin but not by lowering of blood pressure.. 1414945 - Age-related ... Title: Acta veterinaria Hungarica Volume: 55 ISSN: 0236-6290 ISO Abbreviation: Acta Vet. Hung. Publication Date: 2007 Mar ...
By and large, the same results were found in pediatric cardiac surgery, for which a more thorough analysis has shown that this ... A significant inverse relationship of surgical institutional and surgeon volumes to outcome has been demonstrated in many high- ... Lower-volume programs tend to underperform larger-volume programs as case complexity increases. High-volume pediatric cardiac ... Surgical volume-to-outcome relationship and monitoring of technical performance in pediatric cardiac surgery Pediatr Cardiol. ...
Measuring Cardiac Output and Stroke Volume Using the Physioflow Impedance Device in Pregnant Patients. This study has been ... Pilot Study Measuring Cardiac Output and Stroke Volume Using Non-Invasive Thoracic Impedance With the Physioflow Impedance ... Continuous measurement of cardiac output (CO), stroke volume (SV) and/or systemic vascular resistance (SVR) changes. [ Time ... The etiology of hypotension is multi-factorial,and it is postulated that decreases in cardiac output (CO), stroke volume (SV) ...
Volume 19, Number 3-March 2013 Letter. Mycobacterium fortuitum Endocarditis Associated with Cardiac Surgery, Serbia On This ... None of them had previous cardiac surgery. The same patch, SJM Pericardial Patch with EnCap Technology (St. Jude Medical, St. ... Mycobacterium fortuitum Endocarditis Associated with Cardiac Surgery, Serbia. Emerging Infectious Diseases. 2013;19(3):517-519 ... Mycobacterium fortuitum Endocarditis Associated with Cardiac Surgery, Serbia. ...
In this paper, a data communications model based Volume ... The research of the communication between implanted Cardiac ... Implanted Cardiac Pacemaker Mathematical Modeling and Research based on the Volume Conduction: 10.4018/IJCINI.2017070105: ... "Implanted Cardiac Pacemaker Mathematical Modeling and Research based on the Volume Conduction," International Journal of ... "Implanted Cardiac Pacemaker Mathematical Modeling and Research based on the Volume Conduction." IJCINI 11.3 (2017): 69-84. Web ...
cardiac output. RAo. right aortic arch. Rsys. systemic resistance. Rven. venous resistance. Vb. blood volume. Vp. plasma volume ... indicating equal cardiac capacities - consistent with the lack of cardiac growth. Volume loading also eliminated any influence ... 1986). Blood volume, the venous system, preload, and cardiac output. Can. J. Physiol. Pharmacol. 64, 383-387. doi:10.1139/y86- ... Effects of volume loading in steps of 10% body mass and a 15% blood volume depletion on various parameters in Python regius. (A ...
Right Ventricular Mitral Regurgitation Cardiac Hypertrophy Volume Overload Pressure Overload These keywords were added by ... Molecular characterization of angiotensin II-induced hypertrophy of cardiac myocytes and hyperplasia of cardiac fibroblasts. ... Cardiac hypertrophy: Useful adaptation or pathologic process. Am J Med 69:576-584.PubMedCrossRefGoogle Scholar ... Cardiac myocyte necrosis induced by angiotensin II. Circ Res 69:1185-1195.PubMedCrossRefGoogle Scholar ...
Abstract 14311: Congestive Heart Failure Upregulates Volume-Dependent Chloride Currents in c-Kit+ Endogenous Cardiac Stem Cells ... Abstract 14311: Congestive Heart Failure Upregulates Volume-Dependent Chloride Currents in c-Kit+ Endogenous Cardiac Stem Cells ... Abstract 14311: Congestive Heart Failure Upregulates Volume-Dependent Chloride Currents in c-Kit+ Endogenous Cardiac Stem Cells ... Abstract 14311: Congestive Heart Failure Upregulates Volume-Dependent Chloride Currents in c-Kit+ Endogenous Cardiac Stem Cells ...
... cardiac output and stroke volume are, as well as how they change during sport and physical exercise. ... Cardiac volumes. Cardiac volumes describe the amount of blood moved by the heart. ... Cardiac output (CO) = Stroke volume (SV) / Heart rate (HR). *This can range from 5,000ml/min at rest to 35,000ml/min during ... Here we explain heart rate, cardiac output, stroke volume, and how they change during physical exercise. ...
... .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 ...
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 ...
Antidiuretic hormone response to volume depletion in diabetic patients with cardiac autonomic dysfunction André Grimaldi; André ... 4. These results suggest that, in humans, cardiac receptors and vagal pathways play a role in ADH response to volume depletion. ... Antidiuretic hormone response to volume depletion in diabetic patients with cardiac autonomic dysfunction. Clin Sci (Lond) 1 ... 3. Volume depletion estimated from the rise in plasma protein (+ 11.9 and + 12.2% in denervated and intact patients ...
  • Aortocaval fistula in rat: a unique model of volume-overload congestive heart failure and cardiac hypertrophy. (nih.gov)
  • Therefore, development of reliable experimental models of CHF and cardiac hypertrophy is essential to better understand disease progression and allow new therapy development. (nih.gov)
  • These include Na+-retention, cardiac hypertrophy and increased activity of both vasoconstrictor/antinatriureticneurohormonal systems and compensatory vasodilating/natriuretic systems. (nih.gov)
  • Cardiac hypertrophy expressed as heart weight/body weight ratio (HW/BW%) in rats with compensated and decompensated CHF, one week after the placement of AV fistula. (nih.gov)
  • a) A scheme showing pathological cardiac remodeling, eccentric versus concentric hypertrophy. (nih.gov)
  • Notice that rats with AV fistula exhibited cardiac hypertrophy dilation compared with sham controls. (nih.gov)
  • A deeper understanding of the molecular processes that lead to cardiac hypertrophy offers hope for millions of individuals worldwide. (adinstruments.com)
  • Cardiac hypertrophy is the abnormal enlargement, or thickening of the heart muscle, in response to an increase in cardiac workload. (adinstruments.com)
  • If left untreated, cardiac hypertrophy will eventually progress to heart failure (HF), a condition where the heart is no longer able to pump enough blood to meet the body's needs. (adinstruments.com)
  • Because cardiac hypertrophy develops gradually, there is a relatively long time frame between the onset of the disease to the development of HF. (adinstruments.com)
  • A fundamental problem in the effective treatment of cardiac hypertrophy is our limited understanding of the key molecular processes involved in the development of the disease. (adinstruments.com)
  • Using a variety of techniques including animal models of ventricular hypertrophy, gene knockouts, and hemodynamic analyses - Min and collegues have successfully identified some key proteins involved in the development of cardiac hypertrophy as well as potential drug targets and therapies for treating the disease 3,4,5 . (adinstruments.com)
  • Min regularly uses ventricular pressure-volume (PV) analyses to characterize and study cardiac hypertrophy. (adinstruments.com)
  • Min explains that during the early stages of cardiac hypertrophy, the changes in ventricular pressure and volume cause the PV Loop data to take on a distinctive shape. (adinstruments.com)
  • To accommodate the pronounced metabolic response to digestion, pythons increase heart rate and elevate stroke volume, where the latter has been ascribed to a massive and fast cardiac hypertrophy. (biologists.org)
  • However, in spite of this failure to reduce cardiac hypertrophy or to prevent the remodeling associated with this model of chronic volume overload, there was functional improvement in the animals, as determined by the lower left ventricular filling pressures and pulmonary artery pressures in the treated animals compared with the controls. (springer.com)
  • Our results suggest that diastolic wall stress activates the cardiac renin-angiotensin system (RAS) and that angiotensin (Ang) II and angiotensin-converting enzyme (ACE) may play a functional role in the eccentric pattern of hypertrophy observed in the volume overload model of MR in the dog heart. (springer.com)
  • Thus, the mechanisms by which the RAS may mediate eccentric hypertrophy in the low pressure volume overload of MR is open to question. (springer.com)
  • Molecular characterization of angiotensin II-induced hypertrophy of cardiac myocytes and hyperplasia of cardiac fibroblasts. (springer.com)
  • The present study was performed to investigate whether PKC-isozymes are differentially regulated during the development of volume-overload cardiac hypertrophy. (semanticscholar.org)
  • Protein kinase C mRNA and protein expressions in hypobaric hypoxia-induced cardiac hypertrophy in rats. (semanticscholar.org)
  • Signaling pathways in cardiac myocyte hypertrophy. (semanticscholar.org)
  • Cytoplasmic signaling pathways that regulate cardiac hypertrophy. (semanticscholar.org)
  • We have reported previously that thyroid hormone activates the circulating and tissue renin-angiotensin systems without involving the sympathetic nervous system, which contributes to cardiac hypertrophy in hyperthyroidism. (bioscientifica.com)
  • This study examined whether the circulating or tissue renin-angiotensin system plays the principal role in hyperthyroidism-induced cardiac hypertrophy. (bioscientifica.com)
  • Despite stabilization of the circulating renin-angiotensin system, thyroid hormone induced cardiac hypertrophy (5.0+/-0.5 vs 3.5+/-0.1 mg/g) in conjunction with the increases in cardiac expression of renin mRNA, cardiac renin and cardiac angiotensin II (74+/-2 vs 48+/-2%, 6.5+/-0.8 vs 3.8+/-0.4 ng/h per g, 231+/-30 vs 149+/-2 pg/g respectively). (bioscientifica.com)
  • These results indicate that the local renin-angiotensin system plays the primary role in the development of hyperthyroidism-induced cardiac hypertrophy. (bioscientifica.com)
  • Severe cardiac hypertrophy has been produced experimentally in rats by long-term, lowdose treatment with tri-iodothyroacetic acid. (bioscientifica.com)
  • We also provide examples of hemodynamics measurements obtained from normal mice/rats, and from animals with cardiac hypertrophy/heart failure, and describe values for various useful load-dependent and load-independent indexes of LV function obtained using different types of anesthesia. (elsevier.com)
  • These data demonstrate that perinatal exposure to DDT causes hypertension and cardiac hypertrophy in adult offspring. (nih.gov)
  • We continuously measured cardiac output (electromagnetic flowmeter), aortic blood pressure, right atrial blood pressure, intrapericardial pressure, and respirations. (ahajournals.org)
  • Although the risk [for major adverse events] after cardiac catheterization in patients with [congenital heart disease] is low at all hospitals, it is higher among hospitals with fewer than 150 cases annually," Natalie M. Jayaram, MD, pediatric cardiologist at Children's Mercy Hospitals and Clinics, Kansas City, Missouri, and colleagues wrote in an abstract. (healio.com)
  • ABSTRACT This study aimed to evaluate the compliance of daily meals served to hypertensive and cardiac inpatients in Jordan according to WHO guidelines and the Therapeutic Lifestyle Changes (TLC) and Dietary Approach to Stop Hypertension (DASH) diets plans. (who.int)
  • Abstract: Primary ageing markedly attenuates cutaneous vasodilatation and the increase in cardiac output during passive heating. (nebraska.edu)
  • These results support the notion that performing congenital cardiac catheterization procedures at higher-volume centers may be associated with improved patient outcomes. (healio.com)
  • For patients with post-cardiac surgery shock requiring high-dose catecholamines, the early HVHF onset for 48 hours, followed by standard volume until resolution of shock and recovery of renal function, did not lower Day-30 mortality and did not impact other important patient-centered outcomes compared with a conservative strategy with delayed CVVHDF initiation only for patients with persistent, severe acute kidney injury. (nih.gov)
  • Only one study in the literature has investigated the relationship between adverse outcomes and the volume of pediatric cardiac surgery. (aappublications.org)
  • Does Volume of Cardiac Catheterizations Correlate With Better Outcomes? (chop.edu)
  • In many types of cardiology procedures, there is an association between higher institutional volume and improved outcomes. (chop.edu)
  • See Stroke Volume Optimisation and Improved Outcomes . (deltexmedical.com)
  • In patients with moderate-to-severe heart failure and an intraventricular conduction delay, does cardiac resynchronization improve clinical outcomes? (acpjc.org)
  • MedStar's response statistics and patient outcomes for cardiac arrest victims ( patients whose heart has stopped beating and require CPR on scene ) continues to be concerning. (medstar911.org)
  • Swedish performs a high volume of procedures which translates into better outcomes and fewer complications. (swedish.org)
  • Severe recurrent angina, acute MI, death caused by cardiac ischemia, and combined outcomes (double end point of angina plus MI, and triple end point of angina plus MI plus death). (acponline.org)
  • In a pilot study, patients who received roxithromycin after unstable angina or non-Q-wave myocardial infarction benefited in 1 of 10 outcomes for individual and combined cardiac end points. (acponline.org)
  • stroke volume (SV) decreased from 108 +/- 36 to 86 +/- 33 ml (p less than 0.001) without change in ejection fraction (from 0.73 +/- 0.09 to 0.74 +/- 0.11). (ahajournals.org)
  • In spite of a significant cardiac chamber dilatation over the 12-week period, left ventricular systolic functional variables (fractional shortening, FS % and ejection fraction, EF %), and also the left ventricular systolic and diastolic free wall thickness remained unchanged. (biomedsearch.com)
  • Furthermore, to evaluate the possible involvement of an augmented ejection fraction on the increased stroke volume during digestion, we address whether the contractile properties in vitro and enzymatic properties of the ventricles are influenced by digestion. (biologists.org)
  • In systolic dysfunction an increase in end-systolic volume would occur with a reduced ejection fraction. (wyzant.com)
  • So another helpful measurement is the ejection fraction, which is the stroke volume divided by the end-diastolic volume, Ejection fraction = Stroke Volume / End- Diastolic Volume. (osmosis.org)
  • There were no age-related changes in cardiac output, end-diastolic or end-systolic volumes, or ejection fraction at rest. (elsevier.com)
  • The inherent error of each model was determined to allow for more precise calculation of stroke volume and cardiac output. (frontiersin.org)
  • Essentially, the conventional prolate spheroid shape model provides the simplest measurement with lowest variability of stroke volume and cardiac output. (frontiersin.org)
  • Cardiac resynchronization therapy: an established pacing therapy for heart failure and mechanical dyssynchrony provides basic knowledge about congestive heart failure and also covers the evolution of cardiac resynchronization therapy. (eurekaselect.com)
  • As cardiac resynchronization therapy (CRT) is a new therapy which still undergoes rapid advancement, it is imperative to provide updates on key issues. (eurekaselect.com)
  • Cardiac resynchronization therapy is an exciting new option for a growing number of heart failure patients, but CRT systems present special challenges to clinicians, even those accustomed to working with pacemakers. (eurekaselect.com)
  • Cardiac resynchronization in chronic heart failure. (acpjc.org)
  • All patients received implantation of a cardiac-resynchronization device (InSync model 8040, Medtronic, Minneapolis, MN, USA) with 3 pacing leads: a standard right atrial lead, a standard right ventricular lead, and a specialized left ventricular lead. (acpjc.org)
  • In patients with moderate-to-severe heart failure and an intraventricular conduction delay, cardiac resynchronization reduced death or worsening of heart failure and improved quality of life and walking ability. (acpjc.org)
  • Techniques are described for estimating a rate of blood flow from a heart, such as a stroke volume or a cardiac output, as a function of a pressure in the heart. (google.com)
  • The pressure monitor may calculate the stroke volume or cardiac output using the velocity-time integral. (google.com)
  • The pressure monitor may control a delivery of therapy by an implantable medical device as a function of the stroke volume or cardiac output. (google.com)
  • 4. The device of claim 1 , wherein the rate is a cardiac output. (google.com)
  • Effect of hemodialysis on blood volume distribution and cardiac output. (ahajournals.org)
  • Effects of hemodialysis on extracellular fluid volume distribution, left ventricular volumes, and cardiac output were determined in patients with end-stage renal disease (n = 19). (ahajournals.org)
  • There results suggest that, although intravascular volume was the major determinant of cardiac output in dialyzed patients, the postdialysis reduction in cardiac output might be related more to the relocation of blood volume than to the absolute degree of blood volume contraction. (ahajournals.org)
  • Effects of volume expansion on cardiac output in the preterm infant. (biomedsearch.com)
  • 7 days presenting without cardiac dysfunction and with a low cardiac output. (biomedsearch.com)
  • All infants increased significantly their cardiac output (CO) (from a median of 177 to 283 ml kg-1 min-1). (biomedsearch.com)
  • Although considered to be a model of high-output heart failure, its long-term renal and cardiac manifestations are similar to those seen in patients with low-output CHF. (nih.gov)
  • Recently, the estimated continuous cardiac output (esCCO) system, which can monitor cardiac output (CO) non-invasively based on pulse wave transit time, has been developed. (springer.com)
  • Comparison of FloTrac cardiac output monitoring system in patients undergoing coronary artery bypass grafting with pulmonary artery cardiac output measurements. (springer.com)
  • Zoremba N, Bickenbach J, Krauss B, Rossaint R, Kuhlen R, Schalte G. Comparison of electrical velocimetry and thermodilution techniques for the measurement of cardiac output. (springer.com)
  • McLeans AS, Needham A, Stewart D, Parkin R. Estimation of cardiac output by noninvasive echocardiographic techniques in the critically ill subjects. (springer.com)
  • Estimated continuous cardiac output based on pulse wave transit time in off-pump coronary artery bypass grafting: a comparison with transpulmonary thermodilution. (springer.com)
  • Cardiac output measurements based on the pulse wave transit time and thoracic impedance exhibit limited agreement with thermodilution method during orthotopic liver transplantation. (springer.com)
  • Pregnant patients having a cesarean section (CS) under spinal anesthesia experience a variety of hemodynamic changes, such as hypotension due to decreases in cardiac output (CO), stroke volume (SV) and/or systemic vascular resistance (SVR). (clinicaltrials.gov)
  • Continuous measurement of cardiac output (CO), stroke volume (SV) and/or systemic vascular resistance (SVR) changes. (clinicaltrials.gov)
  • The etiology of hypotension is multi-factorial,and it is postulated that decreases in cardiac output (CO), stroke volume (SV) and/or systemic vascular resistance (SVR) may precede decreases in blood pressure. (clinicaltrials.gov)
  • Here we explain heart rate, cardiac output, stroke volume, and how they change during physical exercise. (teachpe.com)
  • Cardiac Output (CO) is the amount of blood the heart pumps from each ventricle per minute. (deltexmedical.com)
  • Cardiac index (CI) is the cardiac output proportional to the body surface area (BSA). (deltexmedical.com)
  • Heart rate and stroke volume contribution to cardiac output in swimming yellowfin tuna: response to exercise and temperature. (biologists.org)
  • Blood flow measurements revealed a mean increase in relative cardiac output of 13.6 +/- 3.0% with exercise (mean velocities 1.23-2.10 FLs-1) caused by an 18.8 +/- 5.4% increase in fH and a 3.9 +/- 2.3% decrease in stroke volume. (biologists.org)
  • These results indicate that, unlike most other fishes, cardiac output in yellowfin tuna is regulated primarily through increases in fH. (biologists.org)
  • Acute reductions in ambient temperature at slow swimming velocities resulted in decreases in cardiac output (Q10 = 1.52) and fH (Q10 = 2.16), but increases in stroke volume (Q10 = 0.78). (biologists.org)
  • It is currently uncertain which hemodynamic monitoring device reliably measures stroke volume and tracks cardiac output changes in pediatric cardiac surgery patients. (ovid.com)
  • Intravascular indicators are stimulated, and emissions patterns detected for computation of cardiac output, cardiac index, blood volume and other indicators of cardiovascular health. (google.com)
  • No. 10/153,387, filed May 21, 2002, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution. (google.com)
  • No. 10/487,480, filed May 17, 2004, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution," attorney docket 64693-100. (google.com)
  • No. 60/292,580, filed May 21, 2001, entitled "Method and Apparatus for Measurement of Cardiac Output by Transcutaneous Detection of Fluorescent Indicator. (google.com)
  • If someone has systemic hypertension, what happens to their cardiac output, end-diastolic volume (EDV), end-systolic volume (ESV)? (wyzant.com)
  • With established systemic hypertension it is likely to see normal or decreased cardiac output combined with increased total peripheral resistance. (wyzant.com)
  • Sometimes in mild early hypertension an increase in cardiac output may be seen. (wyzant.com)
  • This means that in chronic hypertension one could expect the cardiac output would decrease and both the end-systolic and end-diastolic volumes would increase. (wyzant.com)
  • However, one of the drawbacks of TEE compared to pulmonary artery catheters is the inability to measure real time stroke volume (SV) and cardiac output (CO) continuously. (elsevier.com)
  • Key points: Age-related changes in cutaneous microvascular and cardiac functions limit the extent of cutaneous vasodilatation and the increase in cardiac output that healthy older adults can achieve during passive heat stress. (nebraska.edu)
  • However, it is unclear if these age-related changes in microvascular and cardiac functions maximally restrain the levels of cutaneous vasodilatation and cardiac output that healthy older adults can achieve during heat stress. (nebraska.edu)
  • We observed that rapid volume loading, performed during passive heat stress, augments both cutaneous vasodilatation and cardiac output in healthy older humans. (nebraska.edu)
  • Furthermore, healthy older humans can augment cardiac output when cardiac pre-load is increased during heat stress. (nebraska.edu)
  • We hypothesized that rapid volume loading performed during heat stress would increase cardiac output in older adults without parallel increases in cutaneous vasodilatation. (nebraska.edu)
  • Twelve young (Y: 26 ± 5 years) and ten older (O: 69 ± 3 years) healthy adults were passively heated until core temperature increased by 1.5°C. Cardiac output (thermodilution), forearm vascular conductance (FVC, venous occlusion plethysmography) and cutaneous vascular conductance (CVC, laser-Doppler) were measured before and after rapid infusion of warmed saline (15 mL kg −1 , ∼7 min). (nebraska.edu)
  • These results demonstrate that healthy older adults can achieve greater levels of cutaneous vasodilatation and cardiac output during passive heating. (nebraska.edu)
  • The ability of the heart to pump blood out to the body, called cardiac output or stroke volume, is determined by three characteristics, according to the University of Virginia School of Medicine. (livestrong.com)
  • For the most part, increased preload results in increased cardiac output, decreased preload results in decreased cardiac output. (livestrong.com)
  • Dehydration or blood loss decreases preload and decreases cardiac output. (livestrong.com)
  • Cardiac preload is just one of four factors that determine cardiac output. (reference.com)
  • Cardiac output refers to the volume of blood pumped out from the heart every minute. (reference.com)
  • Faster heart rates typically lead to greater cardiac output. (reference.com)
  • Greater contractility, which can be stimulated using drugs such as epinephrine, generally leads to higher cardiac output. (reference.com)
  • The final factor that determines cardiac output is afterload. (reference.com)
  • Increased afterload usually leads to lower cardiac output and decreased afterload to higher cardiac output. (reference.com)
  • Cardiac output measurements in transparent fish larvae and other vertebrates have long been made by analyzing videos of the beating heart, and modeling this structure using a conventional simple prolate spheroid shape model. (frontiersin.org)
  • However, the larval fish heart changes shape during early development and subsequent maturation, but no consideration has been made of the effect of different heart geometries on cardiac output estimation. (frontiersin.org)
  • However, when these values of stroke volume multiplied by heart rate to calculate cardiac output, no significant differences between models emerged because of considerable variability in heart rate. (frontiersin.org)
  • However, assessment of heart function-especially if stroke volume is the focus of the study-should consider larval heart shape, with different models being applied on a species-by-species and developmental stage-by-stage basis for best estimation of cardiac output. (frontiersin.org)
  • These findings indicate that although aging does not limit cardiac output per se in healthy community-dwelling subjects, the hemodynamic profile accompanying exercise is altered by age and can be explained by an age-related diminution in the cardiovascular response to β-adrenergic stimulation. (elsevier.com)
  • The aim of the present proof of concept study was to validate a novel method of SV estimation, based on pulse wave velocity (PWV) in patients undergoing cardiac surgery. (elsevier.com)
  • Current cardiovascular magnetic resonance (CMR) T1 mapping techniques such as Modified Look-Locker inversion recovery (MOLLI) imaging have limited resolution, but accelerated and navigator-gated Look-Locker imaging for cardiac T1 estimation (ANGIE) is a novel CMR sequence with spatial resolution suitable for T1 mapping of the RV. (biomedcentral.com)
  • A single-center prospective observational cohort study in children undergoing cardiac surgery with cardiopulmonary bypass (CPB) was conducted. (ovid.com)
  • In patients undergoing cardiac surgery, determination of ITBVI* revealed close agreement with measurements derived by ITBVI. (qxmd.com)
  • While PV Loops may appear to be a relatively simple-looking graph, they can provide you with a wide array of information regarding cardiac function and performance, and can even be used to evaluate certain cardiac diseases. (adinstruments.com)
  • In this study we demonstrated that chronic progressive volume overload resulted in gradual dilatation of the canine heart, and that the pathological process can be monitored successfully by serial echocardiography. (biomedsearch.com)
  • Both pulsus paradoxus and right ventricular diastolic collapse detected by two-dimensional echocardiography are noninvasive markers of impaired cardiac function in cardiac tamponade, yet the reliability of each may vary with the patient's state of hydration. (ahajournals.org)
  • BACKGROUND: Fractional shortening (FS) by echocardiography is considered to represent the short-axis contribution to the stroke volume (SV), also called short-axis function. (lu.se)
  • Cardiac magnetic resonance (CMR) is the 'gold standard' for quantifying pulmonic regurgitation (PR) in adults with congenital heart disease, but remains costly and is less readily available than echocardiography. (icr-heart.com)
  • The indexed right ventricular end-systolic volume (RVESVi) correlated closely with cardiac MRI-monitored PR (p = 0.011 by analysis of variance), but not with that monitored with echocardiography (p = 0.081). (icr-heart.com)
  • To investigate the accuracy of measurement of intrathoracic blood volume index by single thermodilution (ITBVI*) and its sensitivity to detect changes in preload after cardiac surgery compared with conventional transpulmonary arterial dye dilution ITBVI and with conventional monitoring (central venous pressure [CVP] and left ventricular end-diastolic area index [EDAI] by transesophageal echocardiography). (qxmd.com)
  • Recent advances in real-time three-dimensional (3D) echocardiography provide the automated measurement of mitral inflow and aortic stroke volume without the need to assume the geometry of the heart. (elsevier.com)
  • The aim of this study is to explore the ability of 3D full volume color Doppler echocardiography (FVCDE) to quantify aortic regurgitation (AR). (elsevier.com)
  • Effects of intravascular volume state on the value of pulsus paradoxus and right ventricular diastolic collapse in predicting cardiac tamponade. (ahajournals.org)
  • Early High-Volume Hemofiltration versus Standard Care for Post-Cardiac Surgery Shock. (nih.gov)
  • 4 Cardiac Surgery Department, Institute of Cardiometabolism and Nutrition, Hôpital de la Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Université Pierre et Marie Curie-Paris 6, Paris, France. (nih.gov)
  • Post-cardiac surgery shock is associated with high morbidity and mortality. (nih.gov)
  • This prospective, multicenter randomized controlled trial included patients with severe shock requiring high-dose catecholamines 3-24 hours post-cardiac surgery who were randomized to early HVHF (80 ml/kg/h for 48 h), followed by standard-volume continuous venovenous hemodiafiltration (CVVHDF) until resolution of shock and recovery of renal function, or conservative standard care, with delayed CVVHDF only for persistent, severe acute kidney injury. (nih.gov)
  • To examine the relationship between annual provider (hospital and surgeon) volume of pediatric cardiac surgery and in-hospital mortality. (aappublications.org)
  • The 16 acute care hospitals in New York with certificate of need approval to perform pediatric cardiac surgery. (aappublications.org)
  • Probably one of the reasons for this is that pediatric cardiac surgery involves a myriad of different procedures, involving different surgical challenges and entailing a wide range of risks to patients. (aappublications.org)
  • The purpose of this study is to examine the relationship between in-hospital mortality and provider (hospital and surgeon) volume for pediatric cardiac surgery in New York State between 1992 and 1995. (aappublications.org)
  • Second, clinical data from New York's Cardiac Surgery Reporting System (CSRS) are available for conducting risk-adjustments rather than having to rely on administrative data collected for other purposes. (aappublications.org)
  • The database used in the study is the part of New York's CSRS dedicated to pediatric cardiac surgery. (aappublications.org)
  • The Cardiac Surgery in Pennsylvania 2005 report provides information for coronary artery bypass graft (CABG) and valve surgeries. (phc4.org)
  • The following open heart volume tables provide volume figures for all types of open heart surgery. (phc4.org)
  • Hemodynamic monitoring is mandatory for perioperative management of cardiac surgery. (springer.com)
  • We describe a cardiac surgery-related outbreak of endocarditis caused by M. fortuitum in 3 children. (cdc.gov)
  • None of them had previous cardiac surgery. (cdc.gov)
  • Background Existing large-animal, ex vivo, cardiac perfusion models are restricted in their ability to establish an ischemia/reperfusion condition as seen in cardiac surgery or transplantation. (uni-muenchen.de)
  • We have explored the effect of passive containment surgery using the Acorn Cor Cap Cardiac Support Device in heart failure patients with ischemic or idiopathic dilated cardiomyopathy. (ki.se)
  • Echocardiographic findings using tissue velocity imaging following passive containment surgery with the Acorn CorCap cardiac support device. (ki.se)
  • Midterm results of passive containment surgery using the Acorn Cor CapTM Cardiac Support Device in dilated cardiomyopathy. (ki.se)
  • Nineteen patients immediately after cardiac surgery. (qxmd.com)
  • Stroke volume variations for assessment of cardiac responsiveness to volume loading in mechanically ventilated patients after cardiac surgery. (qxmd.com)
  • Trendelenburg positioning after cardiac surgery: effects on intrathoracic blood volume index and cardiac performance. (qxmd.com)
  • Central venous pressure, pulmonary capillary wedge pressure and intrathoracic blood volumes as preload indicators in cardiac surgery patients. (qxmd.com)
  • Cardiac tamponade can happen acutely, such as from a stab wound, from surgery, or from the heart muscle rupturing. (doctorslounge.com)
  • Background: The aim of this study was to develop two novel risk prediction scores for transfusion and bleeding that would be used to inform treatment decisions, quality assurance, and clinical trial design in cardiac surgery. (bris.ac.uk)
  • Conclusions: Two new risk scores for any RBC transfusion or LVBT among cardiac surgery patients have excellent discrimination, and could inform clinical decision making. (bris.ac.uk)
  • 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)
  • Publications] Ishihara, K.: 'Inward rectifier K+ current under physiological cytoplasmic conditions in guinea-pig cardiac ventricular cells. (nii.ac.jp)
  • Cardiac preload stretches heart muscles, which are also known as cardiomyocytes, to their fullest extent depending on physiological demands. (reference.com)
  • Understanding cardiac function in developing larval fishes is crucial for assessing their physiological condition and overall health. (frontiersin.org)
  • In patients with congenital heart disease undergoing cardiac catheterization, major adverse events were highest in centers with the lowest volume, according to new data from the IMPACT registry. (healio.com)
  • Researchers studied the relationship between volume of cardiac catheterization procedures and major adverse events in patients with congenital heart disease based on data from the IMPACT registry for procedures performed between 2011 and March 2015. (healio.com)
  • The CAC is a group of cardiac surgeons, cardiologists, health services researchers, and consumers charged with advising the Department of Health on issues related to the quality of and access to cardiac care, and the prevention of coronary heart disease. (aappublications.org)
  • For example, Angiotensin-converting-enzyme, or ACE inhibitors, are commonly used to reduce blood volume and pressure, lowering the overall demand on the heart to pump blood. (adinstruments.com)
  • PV Loops are generated by inserting a pressure-volume catheter into the left or right ventricle of the heart and plotting the real-time ventricular pressure against ventricular volume over a complete cardiac cycle. (adinstruments.com)
  • As the demand on the heart increases, the cardiac tissue responds by remodeling itself and growing more biomass. (adinstruments.com)
  • As the disease progresses, the ability of the cardiac tissue to relax and fill up with blood weakens, resulting in reduced diastolic function of the heart, as measured by the EDPVR line on the graph. (adinstruments.com)
  • We investigated the correlation of delta heart volume in field (dHVIF) and sternal excursion with dose sparing in heart and left anterior descending artery (LAD) to develop quantitative predictive models for expected dose to heart and LAD. (nih.gov)
  • Dynamic volume rendering of the beating heart is an important element in cardiac disease diagnosis and therapy planning, providing the clinician with insight into the internal cardiac structure and functional behavior. (spie.org)
  • The resultant values are composited together using a boundary color adjustment technique, which acts as "coding" the segmented anatomical structure information into the rendered source volume of the beating heart. (spie.org)
  • However, numerous recent studies show that heart mass rarely increases, even upon ingestion of large meals, and we therefore explored the possibility that a rise in mean circulatory filling pressure (MCFP) serves to elevate venous pressure and cardiac filling during digestion. (biologists.org)
  • Cardiac volumes describe the amount of blood moved by the heart. (teachpe.com)
  • It is calculated by multiplying the stroke volume and the heart rate (beats per minute). (teachpe.com)
  • Stroke Volume (SV) is the volume of blood in millilitres ejected from the each ventricle due to the contraction of the heart muscle which compresses these ventricles. (deltexmedical.com)
  • Stroke Volume Index (SVI) relates SV to body surface area (BSA), thus relating heart performance to the size of the individual. (deltexmedical.com)
  • 1. Thirty-three insulin-dependent diabetic patients were separated into two groups from the results of three different tests for cardiac vagal neuropathy: heart rate response to deep breathing, Valsalva manoeuvre and heart rate response to postural change. (portlandpress.com)
  • 3. Volume depletion estimated from the rise in plasma protein (+ 11.9 and + 12.2% in 'denervated' and 'intact' patients respectively) and heart rate response (+ 10.6 and + 14.7%) were similar in both groups. (portlandpress.com)
  • This observation suggests that the lack of an increase in stroke volume during exercise is not due to the tuna heart operating at maximal anatomical limits. (biologists.org)
  • Other working heart systems only challenge one ventricle or require a substantially larger priming volume. (uni-muenchen.de)
  • The SV is the sum of the volumes generated by 1) reduction in outer volume of the heart, and 2) inner AVPD. (lu.se)
  • The long-axis contribution to the SV is generated by AVPD, and thus the short-axis contribution is the remaining outer volume change of the heart, which should be unrelated to myocardial wall thickness. (lu.se)
  • Cardiac ventricular diastolic phase and papillary muscle lusitropic response to Aurelia venom in abdominal arteriovenous fistulas induced murine circulation volume overloading heart. (alliedacademies.org)
  • The advent of cardiac computational modeling in the last 5 decades has aided the understanding of heart function significantly. (begellhouse.com)
  • This article will discuss how cellular models of electrophysiology, cell signaling, and metabolism have been used to investigate pharmacologic therapies for cardiac diseases including arrhythmia, ischemia, and heart failure. (begellhouse.com)
  • Effect of metformin therapy on cardiac function and survival in a volume-overload model of heart failure in rats. (semanticscholar.org)
  • The study aim was to determine whether cardiac MRI provides additional benefit in the assessment of PR in adults with congenital heart disease. (icr-heart.com)
  • Ventricular pressure-volume relationships have become well established as the most rigorous and comprehensive ways to assess intact heart function. (elsevier.com)
  • Heart volumes and other relative parameters were compared by the SPSS software package, version 19.0. (biomedcentral.com)
  • None of the potential explanatory variables correlated with heart volume changes. (biomedcentral.com)
  • The heart volume changes observed on 3DCT and 4DCT were consistent during radiotherapy. (biomedcentral.com)
  • The changes in heart volume, blood pressure and heart rate may be valuable indicators of cardiac impairment and target dose changes. (biomedcentral.com)
  • A reduction in heart volume suggests that subclinical cardiac damage may have occurred. (biomedcentral.com)
  • The Acorn Cor Cap Cardiac Support Device is a mesh-like polyester device designed to arrest and reverse these processes thereby facilitating left ventricular reversed remodelling in heart failure. (ki.se)
  • In heart failure patients with ventricular dilatation the Acorn Cor Cap Cardiac Support Device represents a novel and interesting amendment to current surgical treatment options with likely beneficial effects. (ki.se)
  • too much volume can cause heart failure. (livestrong.com)
  • According to the Frank-Starling relationship, the volume of blood in the right or left ventricles determines heart pressure. (reference.com)
  • Cardiac muscle is a specialized muscle with high strength and endurance that is present only in the heart, says InnerBody. (reference.com)
  • For example, a stroke volume of 50 milliliters might be absolutely fine for a small person with a small heart volume, but may be low for a large person with a bigger heart volume. (osmosis.org)
  • The present study assessed the validity of three different heart models (the "standard" prolate spheroid model as well as a cylinder and cone tip + cylinder model) applied to digital images of complete cardiac cycles in larval mahi-mahi and red drum. (frontiersin.org)
  • Our heart surgeons perform more pediatric cardiac procedures than any other providers in the Washington, Wyoming, Alaska, Montana and Idaho (WWAMI) region. (seattlechildrens.org)
  • Cardiac lead extraction is safer in high volume centres, according to the largest study of contemporary practice in Europe, published in European Heart Journal . (cardiacrhythmnews.com)
  • We begin with the location of the heart inside the mediastinum, position of cardiac chambers, pericardial space and neighboring structures of the heart. (intechopen.com)
  • The cardiac action potential is a brief change in voltage (membrane potential) across the cell membrane of heart cells. (wikipedia.org)
  • One infant had an haemodynamically significant ductus arteriosus revealed by volume expansion, another one developed myocardial dysfunction. (biomedsearch.com)
  • However, there is no conclusive evidence showing a contribution of RVLM-C1 neurons to the development of cardiac dysfunction in the setting of HF. (portlandpress.com)
  • Seventeen patients were considered as without ('intact' patients) and 16 as with ('denervated' patients) cardiac autonomic dysfunction. (portlandpress.com)
  • In diastolic dysfunction an increase in end-diastolic volume would occur due to enlargement of the left ventricle. (wyzant.com)
  • Cardiac overexpression of Epac1 in transgenic mice rescues lipopolysaccharide-induced cardiac dysfunction and inhibits Jak-STAT pathway. (semanticscholar.org)
  • A schematic description of the creation of aortocaval fistula (ACF) in rats, an experimental model of volume-overload CHF. (nih.gov)
  • Taken together, activation of the adrenergic nervous system early in the course of volume overload contributes to increased production of reactive inflammatory species (RIS) and that one mechanism underlying the salutary effects of ß-blockade may relate to attenuation of myocardial formation of RIS with subsequent beneficial effects on MMP activation and ECM and LV remodeling and function. (bioportfolio.com)
  • Echocardiographic characterisation of cardiac dilatation induced by volume overload in a canine experimental model. (biomedsearch.com)
  • The aim of this study was to characterise the development of cardiac dilatation induced by chronic volume overload in 12 dogs. (biomedsearch.com)
  • The beneficial effect of converting enzyme inhibitor on myocardial function in this model of volume overload, but in the absence of morphological improvement, remains speculative but may be related to alterations in the RAS in the cardiac muscle produced by the treatment. (springer.com)
  • Catecholaminergic (C1) neurons located in the rostral ventrolateral medulla (RVLM) are known to modulate sympathetic outflow and are hyperactivated in volume overload HF. (portlandpress.com)
  • leaving little capacity for further reductions in end-diastolic volume. (biologists.org)
  • SV is the difference between end diastolic volume (EDV) and end systolic volume (ESV). (deltexmedical.com)
  • 100 μl volume challenge with Aurelia venom or CfTX-1 analogue reduced 10% diastolic pressures, however systolic pressure did not significantly increased with significant enhancing of pulse pressure. (alliedacademies.org)
  • Global end-diastolic volume as an indicator of cardiac preload in patients with septic shock. (qxmd.com)
  • It occurs at the end of filling or diastole, also called the end-diastolic point, and the volume of blood within the left ventricle is called the end-diastolic volume, and it's about 120 milliliters. (osmosis.org)
  • So, end-diastolic volume minus end-systolic volume, gives us the stroke volume , which is the volume of blood that the left ventricle ejects with every heartbeat, or stroke. (osmosis.org)
  • End-diastolic and stroke volumes modeled by just a simple cylinder shape were 30-50% higher compared to the conventional prolate spheroid. (frontiersin.org)
  • 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)
  • This article aims to review and illustrate advances in parametric mapping methods, in particular T1 mapping in cardiac diseases and to appraise their clinical potential in the context of established CMR methods. (biomedcentral.com)
  • In a multivariable analysis, extraction in a low volume centre was associated with a doubled risk of death from all causes during the hospital stay and a doubled risk of clinical failure of the procedure. (cardiacrhythmnews.com)
  • High volume centres achieved radiological (96.2% vs 93.4%) and clinical (97.3% vs. 94.3%) success more frequently than low volume centres. (cardiacrhythmnews.com)
  • Andrew C. Glatz, MD , and colleagues investigated whether such a relationship occurs in congenital cardiac catheterization. (chop.edu)
  • Relationship between hospital procedure volume and complications following cardiac catheterization: a report from the IMPACT Registry. (chop.edu)
  • In 2016, we completed 738 procedures in the cardiac catheterization labs at Seattle Children's. (seattlechildrens.org)
  • Read more about cardiac catheterization at Seattle Children's. (seattlechildrens.org)
  • Jayaram told Cardiology Today that "because of the small absolute differences in rates of major adverse events based upon center volume, it would be difficult to make definitive recommendations regarding regionalization of care based upon our study results alone. (healio.com)
  • it is measured clinically by the volume of blood in the left ventricle, the main pumping chamber, when it is most relaxed. (livestrong.com)
  • Cardiovascular Physiology Concepts, a website managed by Richard E. Klabunde, Ph.D., the author of a book by the same name, states changing the volume inside the left ventricle is the most important method of changing preload. (livestrong.com)
  • Drugs that decrease afterload either by decreasing volume such as diuretics or by decreasing blood pressure including angiotensin converting enzyme inhibitors and nitrates can secondarily decrease preload because less blood is left in the left ventricle after pumping. (livestrong.com)
  • In other words, at least half of the blood volume in the left ventricle should get pumped out during each heartbeat. (osmosis.org)
  • 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)
  • Both hospital volume and surgeon volume are significantly associated with in-hospital mortality, and these differences persist for both high-complexity and low-complexity pediatric cardiac procedures. (aappublications.org)
  • The cardiac papillary muscle velocity attenuation after active stretching was significantly accelerated in severe stretched higher preload muscle. (alliedacademies.org)
  • Increasing the volume with fluids or blood products increases preload and, therefore, the amount of blood pumped out into the body. (livestrong.com)
  • Assessment of intrathoracic blood volume as an indicator of cardiac preload: single transpulmonary thermodilution technique versus assessment of pressure preload parameters derived from a pulmonary artery catheter. (qxmd.com)
  • Assessment of cardiac preload and extravascular lung water by single transpulmonary thermodilution. (qxmd.com)
  • What is cardiac preload? (reference.com)
  • Cardiac preload refers to pressure in the left or right ventricles immediately after end-diastole or before systole, notes the Columbia Center for New Media Teaching and Learning. (reference.com)
  • Cardiac preload is one component of the Frank-Starling relationship, notes CCNMTL. (reference.com)
  • Stroke volume is affected by preload and afterload, according to Cheetah Medical. (reference.com)
  • The Physioflow Impedance device employs a continuous non-invasive method of measuring ten cardiac hemodynamic parameters including flow, resistance, contractility and fluid content. (clinicaltrials.gov)
  • eCSCs express volume-dependent Cl - channels ( I Cl,vol ) activated under hemodynamic stress. (ahajournals.org)
  • The end result is hemodynamic compromise, low stroke volume and shock. (doctorslounge.com)
  • We investigated whether pre-procedural MPV could predict major adverse cardiac events (MACE) in candidates for elective percutaneous coronary intervention (PCI). (sid.ir)
  • Fluvastatin for prevention of cardiac events following successful first percutaneous coronary intervention: a randomized controlled trial. (acpjc.org)
  • In patients having percutaneous coronary intervention (PCI), does cholesterol lowering with fluvastatin prevent major adverse cardiac events (MACEs) more than placebo? (acpjc.org)
  • Reducing lung liquid volume increases biventricular outputs and systemic arterial blood flows despite decreased cardiac filling pressures in fetal lambs. (edu.au)
  • Increments in cardiac stroke volume were strongly positively correlated with those in arterial plasma NE (r = 0. (thefreedictionary.com)
  • Hereby, we will focus on the neurohormonal, renal, and cardiac manifestations of the ACF model in rats, with special emphasis on our own experience. (nih.gov)
  • This change in contractility can be measured by the slope and position of the end-systolic pressure-volume relationship (ESPVR) on the PV loop graph (as depicted on the right). (adinstruments.com)
  • In vitro measurements of force development of paced ventricular strips also failed to reveal signs of increased contractility, but the postprandial hearts had higher activities of cytochrome oxidase and pyruvate kinase, which probably serves to sustain the rise in cardiac work during digestion. (biologists.org)
  • Cardiac irradiation increases the risk of coronary artery disease in patients with left-sided breast cancer. (nih.gov)
  • Paired ICP-elastance measurements may offer benefit as an adjunct "early warning monitor" alerting to the risk of untoward ICP elevation in brain-injured patients that is induced by small increases in intracranial volume. (thejns.org)
  • This provides a window of opportunity to slow or even reverse the progression of cardiac remodeling in these patients displaying the early stages of the disease. (adinstruments.com)
  • As a consequence, in the first stages of the disease, the strength of each contraction may be more forceful than normal during the systolic phase of the cardiac cycle. (adinstruments.com)
  • Lack of relationship between length of disease, cardiac and plasma volumes suggests findings are not secondary to deconditioning. (prohealth.com)
  • This cardiac magnetic resonance study was performed to assess myocardial fibrosis by evaluating T1-relaxation time (T1), to measure left ventricular (LV) strain, and to determine epicardial fat volume (EFV) in hypertensive patients with no history of cardiovascular (CV) events and to relate the results to the presence of coronary atherosclerotic artery disease (CAD) in these patients. (ovid.com)
  • Recently, these models increasingly have been applied toward designing and understanding therapies for cardiac disease. (begellhouse.com)
  • However, the molecular mechanisms underlying disease development in these patients have not been elucidated, and the acute cardiac events that lead to an accumulation of cardiac damage are not well understood. (nature.com)
  • Perfusion cardiac MRI (CMR) is a radiation-free and noninvasive imaging tool which has gained increasing interest for the diagnosis of coronary artery disease. (umn.edu)
  • To assess the effect of age on cardiac volumes and function in the absence of overt or occult coronary disease, we performed serial gated blood pool scans at rest and during progressive upright bicycle exercise to exhaustion in 61 participants in the Baltimore Longitudinal Study of Aging. (elsevier.com)
  • The subjects ranged in age from 25 to 79 years and were free of cardiac disease according to their histories and results of physical, resting and stress electrocardiographic, and stress thallium scintigraphic examinations. (elsevier.com)
  • Intrathoracic blood volume index was measured by dye dilution (ITBVI) and thermodilution (ITBVI*) immediately before and after volume loading. (qxmd.com)
  • Exclusion criteria included use of pacemakers or cardioverter-defibrillators, a cardiac or cerebral ischemic event in the previous 3 months, and atrial arrhythmia in the previous month. (acpjc.org)
  • Rate dependence of the action potential is a fundamental property of cardiac cells and alterations can lead to severe cardiac diseases including cardiac arrhythmia and sometimes sudden death. (wikipedia.org)
  • A uniform transfer function (TF), such as is generally employed in volume rendering, cannot effectively isolate such structures because of the lack of spatial information and the small intensity differences between adjacent tissues. (spie.org)
  • Background: Mean platelet volume (MPV) has been introduced as a simple and accurate method for assessing platelet function, which can be used as a prognostic marker for cardiovascular events. (sid.ir)
  • We examined the association between cardiovascular reactions to a standard stress task, the paced auditory serial arithmetic rest, and forced expiratory volume in one second, an effort, hence motivation, dependent assessment of lung function measured by spirometry. (stir.ac.uk)
  • Short-axis epicardial volume change is a measure of cardiac left ventricular short-axis function which is independent of myocardial wall thickness. (lu.se)
  • Left ventricular long-axis function was measured as the portion of the stroke volume, in ml, generated by AVPD. (lu.se)
  • The aim of the present study was to examine whether MET would improve cardiac function and survival also in non-diabetic HF. (semanticscholar.org)
  • No acute effect on hemodynamics, coronary vasomotor function, Endothelin- I levels or infarction size was demonstrated following application of the Acorn Cor Cap Cardiac Support Device at induction of acute experimental myocardial infarction. (ki.se)
  • Here, we show that NF-κB is activated in murine dystrophic ( mdx) hearts, and that cardiomyocyte ablation of NF-κB rescues cardiac function. (nature.com)
  • In this respect, in DMD hearts, NF-κB acts differently from its established role as a transcriptional activator, instead promoting global changes in the chromatin landscape to regulate calcium genes and cardiac function. (nature.com)
  • Reproducibility of double indicator dilution measurements of intrathoracic blood volume compartments, extravascular lung water, and liver function. (qxmd.com)
  • Seismocardiography is a method for detecting cardiac function by measuring the vibrations of the sternum. (aalto.fi)
  • The failure of ADH to respond significantly to the volume stimulus in 'denervated' patients was confirmed by the results of the time-course study. (portlandpress.com)
  • Cardiac volume reduced significantly from an early treatment stage and maintained the reduction until the middle stage. (biomedcentral.com)
  • With volume loading, ITBVI and ITBVI* increased significantly from 877 +/- 195 mL/m(2) to 967 +/- 180 mL/m(2) and from 889 +/- 195 mL/m(2) to 954 +/- 185 mL/m(2). (qxmd.com)
  • The conventional prolate spheroid and cone tip + cylinder models yielded significantly different stroke volume values at 56 hpf in red drum and from 56 to 104 hpf in mahi. (frontiersin.org)
  • High volume centres had significantly lower overall in-hospital major complications (2.4% vs. 4.1%) and deaths (1.2% vs. 2.5%) compared to low volume centres. (cardiacrhythmnews.com)
  • 1991. Cardiac myocyte necrosis induced by angiotensin II. (springer.com)
  • The standard model used to understand the cardiac action potential is that of the ventricular myocyte. (wikipedia.org)
  • The research of the communication between implanted Cardiac Pacemaker and external devices is a focus. (igi-global.com)
  • Cardiac Pacemaker is a kind of typical implanted medical electronic devices (Berger et al. (igi-global.com)
  • A Cardiac Pacemaker with Activity-Dependent Rate Regulation", H. D. Funke, Jun. (patents.com)
  • This invention relates generally to a cardiac pacing system in which the pacing rate tracks metabolic need, and more particularly to a rate adaptive pacemaker employing a sensor for detecting variations in cardiac chamber volume or pressure due to respiration and producing a control signal related to the respiration frequency and depth for adjusting the pacing rate relative to a baseline value. (google.com)
  • The primary outcome was a composite end point (development of a MACE) defined as cardiac death, nonfatal myocardial infarction (MI), or a reintervention (CABG, repeated PCI, or PCI for a new lesion). (acpjc.org)
  • The acute effects of application of the Acorn Cor Cap Cardiac Support Device in experimental porcine myocardial infarction were investigated. (ki.se)
  • Passive ventricular remodelling using the Acorn Cor CapTM Cardiac Support Device does not influence porcine acute myocardial infarction. (ki.se)
  • To evaluate the effectiveness of roxithromycin for reducing severe recurrent angina, acute myocardial infarction (MI), and death caused by cardiac ischemia in patients with unstable angina or non-Q-wave MI. (acponline.org)
  • 30%) underwent cine cardiac magnetic resonance imaging. (lu.se)
  • CS) was determined with dedicated cardiac magnetic resonance software (feature tracking). (ovid.com)
  • AR volume was measured by (1) two-dimensional-CDE, using the proximal isovelocity surface area (PISA) and (2) real-time 3D-FVCDE with (3) phase-contrast cardiac magnetic resonance imaging (PC-CMR) as the reference method. (elsevier.com)
  • Techniques exist to reduce cardiac irradiation, but the optimum technique depends on individual patient anatomy and physiology. (nih.gov)
  • The recent development of catheter ablation was possible, thanks to a rigorous understanding of cardiac anatomy. (intechopen.com)
  • We performed repeated four-dimensional computed tomography (4DCT) to detect changes in cardiac volume during radiotherapy for esophageal cancer patients, and explored potential factors responsible for those changes. (biomedcentral.com)
  • prospectively investigated the changes in cardiac volume in esophageal cancer patients treated with neoadjuvant chemoradiation. (biomedcentral.com)
  • This has been thought to be due to compensatory changes in cardiac stroke volume and/or central vasoconstriction [21]. (thefreedictionary.com)
  • In this study, we investigated Aurelia venom and its analogue intervene induced cardiovascular hemodynamics variations in cardiac cycle in vivo and cardiac papillary muscle passive tension responsiveness in vitro . (alliedacademies.org)
  • 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)
  • We describe a novel biventricular cardiac perfusion system with reduced priming volume. (uni-muenchen.de)
  • Measurements were made before infusion, at volumes 5, 12.5 and 20 ml kg-1 and 1 h later. (biomedsearch.com)
  • To explore potential mechanisms that underpin the cardiac abnormalities seen in chronic fatigue syndrome (CFS) using non-invasive cardiac impedance, red cell mass and plasma volume measurements. (prohealth.com)
  • 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)
  • Cardiac-gated elastance measurements had markedly lower variance within swine compared with non-cardiac-gated measures. (thejns.org)
  • 1993. Identification of functionl angiotensin II receptors in rat cardiac fibroblasts. (springer.com)
  • 1993. Angiotensin II is mitogenic in neonatal rat cardiac fibroblasts. (springer.com)
  • Serum free tri-iodothyronine, plasma renin activity, plasma angiotensin II, cardiac renin and cardiac angiotensin II were measured with RIAs. (bioscientifica.com)
  • Early results with cardiac support device implant in patients with ischemic and non-ischemic cardiomyopathy. (ki.se)
  • To examine the relative value of these noninvasive markers at various states of hydration, we studied five chronically prepared, conscious mongrel dogs during 37 episodes of cardiac tamponade at three different intravascular volumes. (ahajournals.org)
  • The rate of in-hospital procedure-related major complications (the primary endpoint) was 1.7%, including a mortality rate of 0.5%, with no significant differences between high and low volume centres. (cardiacrhythmnews.com)
  • In the event of cardiac major complications occurring after the procedure, patients may often be saved, if complications are recognised and treated promptly. (cardiacrhythmnews.com)
  • Appropriate cardiac structure knowledge is relevant to avoid or minimize complications during catheter placement and RF application. (intechopen.com)