Alteration of Systolic Time Intervals in Right Ventricular
... The reported value for each interval was the average of 35 separate determinations for patients in normal sinus rhythm and ten determinations for patients in atrial fibrillation. Atrial fibrillation occurred only in patients with mitral stenosis. Nine of the ten patients with right ventricular failu ...
... The reported value for each interval was the average of 35 separate determinations for patients in normal sinus rhythm and ten determinations for patients in atrial fibrillation. Atrial fibrillation occurred only in patients with mitral stenosis. Nine of the ten patients with right ventricular failu ...
Nelson – pedi cardiology MURMURS ONLY
... • Due to turbulence in the major brachiocephalic arteries as these vessels arise from the aorta • High-pitched, systolic ejection murmur heard best in the right supraclavicular fossa • Decreases with raising of the chin, throwing back the shoulders, or firm pressure on the ...
... • Due to turbulence in the major brachiocephalic arteries as these vessels arise from the aorta • High-pitched, systolic ejection murmur heard best in the right supraclavicular fossa • Decreases with raising of the chin, throwing back the shoulders, or firm pressure on the ...
Pathogenesis of ventricular hypertrophy
... Important stimuli of cardiac hypertrophy include increased systolic force or tension generated by the myocardial fibers (pressure overload), increased end-diastolic wall stress (volume overload) and neurohumoral factors such as increased circulating catecholamines or discharge of cardiac sympathetic ...
... Important stimuli of cardiac hypertrophy include increased systolic force or tension generated by the myocardial fibers (pressure overload), increased end-diastolic wall stress (volume overload) and neurohumoral factors such as increased circulating catecholamines or discharge of cardiac sympathetic ...
Downloaded
... The patients were studied in the early morning, in the postabsorptive state, in recumbency and without sedation. The cardiac output was determined by the dye injection method of Hamilton and co-workers (2) with minor modifications as reported previously (1). The dye was injected into an antecubital ...
... The patients were studied in the early morning, in the postabsorptive state, in recumbency and without sedation. The cardiac output was determined by the dye injection method of Hamilton and co-workers (2) with minor modifications as reported previously (1). The dye was injected into an antecubital ...
Effect of short-term rapid ventricular pacing followed by pacing
... al.1986, Pasławska et al. 2011). Ventricular tachycardia activates compensatory mechanisms aimed at retaining blood pressure at a level ensuring maintenance of homeostasis. Clinical symptoms of hypotension related to ventricular tachycardia include dizziness, presyncope or fainting. A higher ventric ...
... al.1986, Pasławska et al. 2011). Ventricular tachycardia activates compensatory mechanisms aimed at retaining blood pressure at a level ensuring maintenance of homeostasis. Clinical symptoms of hypotension related to ventricular tachycardia include dizziness, presyncope or fainting. A higher ventric ...
Print - Circulation
... With left atrial injection the base of the left ventricle and the aortic valve are obscured. Therefore, the long axis of the ventricular cavity is measured from its apex to the intersection of its left anterior margin with the corresponding margin of the left atrium (or in a few patients, of the aor ...
... With left atrial injection the base of the left ventricle and the aortic valve are obscured. Therefore, the long axis of the ventricular cavity is measured from its apex to the intersection of its left anterior margin with the corresponding margin of the left atrium (or in a few patients, of the aor ...
of kazakh state medical academy
... minor warmth and swelling, but pain may be excruciating, especially with pressure or movement. Characteristically one joint will be affected for 2 to 3days and then the inflammatory process moves to another region, but two or more joints may be affected simultaneously to some degree (migratory arthr ...
... minor warmth and swelling, but pain may be excruciating, especially with pressure or movement. Characteristically one joint will be affected for 2 to 3days and then the inflammatory process moves to another region, but two or more joints may be affected simultaneously to some degree (migratory arthr ...
Role of Echocardiography in the Diagnosis of Constrictive Pericarditis
... of tuberculous pericarditis has declined. A recent series of 136 patients reported radiographic evidence of pericardial calcification in approximately one third of patients.13 The myocardium is usually normal in CP, but concomitant myocardial involvement may be seen, for example, following mediastina ...
... of tuberculous pericarditis has declined. A recent series of 136 patients reported radiographic evidence of pericardial calcification in approximately one third of patients.13 The myocardium is usually normal in CP, but concomitant myocardial involvement may be seen, for example, following mediastina ...
Right Ventricular Compression as a Sign of Cardiac
... valves. End-diastolic and end-systolic dimensions of the ventricles were measured in the minor axis, defined as the level of the superior margin of the mitral valve chordae tendineae. This level was slightly more basal than that suggested by Hagan and associates as being most accurate for evaluating ...
... valves. End-diastolic and end-systolic dimensions of the ventricles were measured in the minor axis, defined as the level of the superior margin of the mitral valve chordae tendineae. This level was slightly more basal than that suggested by Hagan and associates as being most accurate for evaluating ...
Reference values for variables of fetal cardiocirculatory
... parameters of normal cardiac function at 11–14 weeks’ gestation are not well defined and appropriate reference values have not yet been established. The purpose of this study was to evaluate the fetal cardiocirculatory dynamics during routine first-trimester screening and establish cross-sectional r ...
... parameters of normal cardiac function at 11–14 weeks’ gestation are not well defined and appropriate reference values have not yet been established. The purpose of this study was to evaluate the fetal cardiocirculatory dynamics during routine first-trimester screening and establish cross-sectional r ...
Which Is The Appropriate Arrhythmia Burden To Offer RF
... burden arising from the RVOT (generally >20000 PVCs/24h).44, 4850 However, to date the important question of how many PVCs are required to cause PVC-induced cardiomyopathy is not yet completely answered. Whereas in one study from Carbeillera Pol et al., the PVC burden was not associated with the dev ...
... burden arising from the RVOT (generally >20000 PVCs/24h).44, 4850 However, to date the important question of how many PVCs are required to cause PVC-induced cardiomyopathy is not yet completely answered. Whereas in one study from Carbeillera Pol et al., the PVC burden was not associated with the dev ...
15. 6_tugma_yurak_porok
... in the aorta and pulmonary artery portion of the arterial blood flows from the aorta to the pulmonary artery and into the lungs. Additional volumes of blood circulation in the lungs leads to overflow his bloodstream and causes an increased work of the left heart, causing gipertofiyu. The value of th ...
... in the aorta and pulmonary artery portion of the arterial blood flows from the aorta to the pulmonary artery and into the lungs. Additional volumes of blood circulation in the lungs leads to overflow his bloodstream and causes an increased work of the left heart, causing gipertofiyu. The value of th ...
Electrocardiagram ECG
... failure of the SA (Sinoatrial node) to depolarize is called an escaped beat. Usually if the SA node fails to depolarize the AV node, or atrioventricular node, depolarizes to compensate for the pause in blood flow. When the AV node depolarizes, the current travels both upwards to the atria and throug ...
... failure of the SA (Sinoatrial node) to depolarize is called an escaped beat. Usually if the SA node fails to depolarize the AV node, or atrioventricular node, depolarizes to compensate for the pause in blood flow. When the AV node depolarizes, the current travels both upwards to the atria and throug ...
Left ventricular dyssynergy and dispersion as determinant factors of
... value of ,35%.1 – 3,5,6 However, a number of patients with fatal ventricular arrhythmias have shown LVEF ≥35% in the clinical setting, so that risk stratification for fatal ventricular arrhythmias in such patients is not fully understood. Since the development of fatal ventricular arrhythmias can be ...
... value of ,35%.1 – 3,5,6 However, a number of patients with fatal ventricular arrhythmias have shown LVEF ≥35% in the clinical setting, so that risk stratification for fatal ventricular arrhythmias in such patients is not fully understood. Since the development of fatal ventricular arrhythmias can be ...
Tetralogy of Fallot-Pulmonary Atresia
... o Pulmonary valve (PV) annulus usually hypoplastic, but may be normal size o PV can be biscuspid and stenotic o May have supravalvar narrowing in the main pulmonary artery (MPA) at the sinotubular ridge o Further obstruction at the branch PAs due to hypoplasia or focal areas of stenosis Commonly a ...
... o Pulmonary valve (PV) annulus usually hypoplastic, but may be normal size o PV can be biscuspid and stenotic o May have supravalvar narrowing in the main pulmonary artery (MPA) at the sinotubular ridge o Further obstruction at the branch PAs due to hypoplasia or focal areas of stenosis Commonly a ...
Validation of fourier amplitude ratio to quantitate valvular
... source of error in the calculated total stroke volume, especially in patients with abnormally shaped ventricles (19), In addition, because our catheterization laboratory uses an assumed value for oxygen consumption (10), there is also a potential error in the calculated forward (Fick) stroke volume. ...
... source of error in the calculated total stroke volume, especially in patients with abnormally shaped ventricles (19), In addition, because our catheterization laboratory uses an assumed value for oxygen consumption (10), there is also a potential error in the calculated forward (Fick) stroke volume. ...
Visualization of tissue velocity data from cardiac wall motion
... information on the structure and dynamics of the orientation of the muscle fibers in the human heart might provide significant insight into principles of the mechanics of normal ventricular contraction and electrical propagation and may subsequently aid pre- and postsurgical evaluation of patients. ...
... information on the structure and dynamics of the orientation of the muscle fibers in the human heart might provide significant insight into principles of the mechanics of normal ventricular contraction and electrical propagation and may subsequently aid pre- and postsurgical evaluation of patients. ...
Favorable Survival after Aortic Valve Replacement Compared to the
... study cohort of patients at the start of follow up. The reference cohort is matched for age, calendar time, and gender. The mortality tables for Iceland were obtained from the Human Mortality Database (21). The observed number of deaths was compared to the expected number of deaths using a generaliz ...
... study cohort of patients at the start of follow up. The reference cohort is matched for age, calendar time, and gender. The mortality tables for Iceland were obtained from the Human Mortality Database (21). The observed number of deaths was compared to the expected number of deaths using a generaliz ...
Heart Failure
... Left ventricular (LV) failure LV failure is sometimes referred to as backward failure. The left ventricle cannot pump the blood out of the ventricle to the body, so LV end-diastolic blood volume increases, and this increases LV end-diastolic pressure, causing blood to back up into the left atrium an ...
... Left ventricular (LV) failure LV failure is sometimes referred to as backward failure. The left ventricle cannot pump the blood out of the ventricle to the body, so LV end-diastolic blood volume increases, and this increases LV end-diastolic pressure, causing blood to back up into the left atrium an ...
Left Atrial Myxoma Associated with Mitral Valve Pathology
... systemic or constitutional symptoms of fever, weight loss or fatigue, and immunological manifestations of myalgia, weakness, and arthralgia. Central nervous system symptoms usually call for CT or MRI of the brain to exclude embolisation or aneurysm formation, which is sometimes associated with myxom ...
... systemic or constitutional symptoms of fever, weight loss or fatigue, and immunological manifestations of myalgia, weakness, and arthralgia. Central nervous system symptoms usually call for CT or MRI of the brain to exclude embolisation or aneurysm formation, which is sometimes associated with myxom ...
Left Ventricular Assist Devices Ramp Studies
... pump thrombus deposition. This is a very important ...
... pump thrombus deposition. This is a very important ...
Pacemakers and Implanted Defibrillators
... Wires of an ICD connect to small metal box that contains a battery, pulse generator, and computer ICD’s are indicated for pt’s with hx of life-threatening ventricular tachyarrhythmias or VF A recent study showed that pt’s that received an ICD had a 31% reduction in mortality rate. ...
... Wires of an ICD connect to small metal box that contains a battery, pulse generator, and computer ICD’s are indicated for pt’s with hx of life-threatening ventricular tachyarrhythmias or VF A recent study showed that pt’s that received an ICD had a 31% reduction in mortality rate. ...
4
... afterload, thereby secondarily improving RV function.1 No treatment is currently available that improves RV function directly, partially because it is not considered a therapeutic target in PH.2 Recently, several reports have shown that sympathetic activity is increased in patients with PH.3 Similar ...
... afterload, thereby secondarily improving RV function.1 No treatment is currently available that improves RV function directly, partially because it is not considered a therapeutic target in PH.2 Recently, several reports have shown that sympathetic activity is increased in patients with PH.3 Similar ...
Nonsurgical pulmonary valve replacement: Why, when, and how?
... its natural diameter due to the inherent external constraint provided by the size of the stent. Due to these reasons, we believe that the currently available device would not be suitable for use in patients with outflow tract dimensions beyond 22 mm. Homografts and other bioprosthetic conduits placed ...
... its natural diameter due to the inherent external constraint provided by the size of the stent. Due to these reasons, we believe that the currently available device would not be suitable for use in patients with outflow tract dimensions beyond 22 mm. Homografts and other bioprosthetic conduits placed ...
transcatheter aortic valve replacement 2016 coding and
... 14-Fr equivalent EnVeo R InLine sheath; sinus of valsalva anatomy that would prevent adequate coronary perfusion; moderate to severe mitral stenosis; severe ventricular dysfunction with left ventricular ejection fraction (LVEF) <20%;; symptomatic carotid or vertebral artery disease; severe basal sep ...
... 14-Fr equivalent EnVeo R InLine sheath; sinus of valsalva anatomy that would prevent adequate coronary perfusion; moderate to severe mitral stenosis; severe ventricular dysfunction with left ventricular ejection fraction (LVEF) <20%;; symptomatic carotid or vertebral artery disease; severe basal sep ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.