Ventriculoarterial Coupling in Normal and Failing Heart in Humans
... oxygen consumption per beat (MVo?). Several investigators looked into this efficiency of cardiac pump.1'9-11 They came to a similar theoretical conclusion that the mechanical efficiency from a given end-diastolic volume becomes maximal when arterial impedance is nearly one half the cardiac output im ...
... oxygen consumption per beat (MVo?). Several investigators looked into this efficiency of cardiac pump.1'9-11 They came to a similar theoretical conclusion that the mechanical efficiency from a given end-diastolic volume becomes maximal when arterial impedance is nearly one half the cardiac output im ...
Impaired left ventricular filling due to right-to
... strated that the reduction of SV in PAH patients is related to the filling state of the LV at end diastole, which is reduced because of an abnormal filling pattern. The main mechanism of LV underfilling was leftward interventricular septum displacement. Series vs. direct ventricular interaction. Imp ...
... strated that the reduction of SV in PAH patients is related to the filling state of the LV at end diastole, which is reduced because of an abnormal filling pattern. The main mechanism of LV underfilling was leftward interventricular septum displacement. Series vs. direct ventricular interaction. Imp ...
instruction manual - University of South Alabama
... (tachycardia) cardiac output falls off dramatically. In the normal range (60-100 b/m) cardiac output is relatively independent of heart rate. In contrast to tachycardias generated by an ectopic focus as in the above example, tachycardia resulting from sympathetic stimulation is well tolerated becaus ...
... (tachycardia) cardiac output falls off dramatically. In the normal range (60-100 b/m) cardiac output is relatively independent of heart rate. In contrast to tachycardias generated by an ectopic focus as in the above example, tachycardia resulting from sympathetic stimulation is well tolerated becaus ...
article in press
... and connective tissue diseases such as Marfan syndrome, among others.3,4 Clinically, it may be manifested by dyspnea, cough, hemoptysis, and chest pain.3 However, most patients with PAA are asymptomatic.2,5 The diagnosis is made at random by routine screening. The presence of pain is a symptom that ...
... and connective tissue diseases such as Marfan syndrome, among others.3,4 Clinically, it may be manifested by dyspnea, cough, hemoptysis, and chest pain.3 However, most patients with PAA are asymptomatic.2,5 The diagnosis is made at random by routine screening. The presence of pain is a symptom that ...
July - Congenital Cardiology Today
... intracardiac electrophysiological study during surgery and by Thiene et al20 in post-mortem hearts. These abnormal courses of the conduction system are of great surgical importance, especially in the presence of a ventricular septal defect or subpulmonary obstruction, since the conduction system is ...
... intracardiac electrophysiological study during surgery and by Thiene et al20 in post-mortem hearts. These abnormal courses of the conduction system are of great surgical importance, especially in the presence of a ventricular septal defect or subpulmonary obstruction, since the conduction system is ...
ATRIAL FIBRILLATION IN CHILDHOOD WITH FAMILIAL
... In 1936, Orgain and Wolf et al.1 first recorded a familial incidence of atrial fibrillation (AF) and hyperthyroidism after the onset of atrial fibrillation in a patient with a normal heart. Brugada et al.2 (1997) and Chen et al.3 (2003) identified Spanish families and Chinese families with atrial fi ...
... In 1936, Orgain and Wolf et al.1 first recorded a familial incidence of atrial fibrillation (AF) and hyperthyroidism after the onset of atrial fibrillation in a patient with a normal heart. Brugada et al.2 (1997) and Chen et al.3 (2003) identified Spanish families and Chinese families with atrial fi ...
20-1 Anatomy of the Heart
... • 20-1 Describe the anatomy of the heart, including vascular supply and pericardium structure, and trace the flow of blood through the heart, identifying the major blood vessels, chambers, and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle, indicate the importance o ...
... • 20-1 Describe the anatomy of the heart, including vascular supply and pericardium structure, and trace the flow of blood through the heart, identifying the major blood vessels, chambers, and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle, indicate the importance o ...
Outcomes 2014 - Inova Heart and Vascular Institute
... Venkataraman, MD, an IHVI electrophysiologist, known to all as “Dr. V.” He recommended cardiac ablation to treat Anthony’s arrhythmia at the source. Initially, Dr. V performed a standard ablation procedure to remove scar tissue from the endocardium, the inside of Anthony’s heart. But because Anthony ...
... Venkataraman, MD, an IHVI electrophysiologist, known to all as “Dr. V.” He recommended cardiac ablation to treat Anthony’s arrhythmia at the source. Initially, Dr. V performed a standard ablation procedure to remove scar tissue from the endocardium, the inside of Anthony’s heart. But because Anthony ...
Understanding your child`s heart Tetralogy of Fallot
... pumps blood out into an artery. The right ventricle pumps blood – blue in the illustration – into the pulmonary artery (the blood vessel that takes blood to the lungs). The left ventricle pumps blood – red in the illustration – into the aorta (the blood vessel that takes blood to the rest of the bod ...
... pumps blood out into an artery. The right ventricle pumps blood – blue in the illustration – into the pulmonary artery (the blood vessel that takes blood to the lungs). The left ventricle pumps blood – red in the illustration – into the aorta (the blood vessel that takes blood to the rest of the bod ...
In Vitro Studies (FDA page 15)
... Steady flow testing is only available through ViVitro Laboratory services. Assessment of flow fields is only available through ViVitro Laboratory services. Durability testing – An assessment of the durability of the valve shall be performed in order to assess contend function over a reasonable ...
... Steady flow testing is only available through ViVitro Laboratory services. Assessment of flow fields is only available through ViVitro Laboratory services. Durability testing – An assessment of the durability of the valve shall be performed in order to assess contend function over a reasonable ...
3
... The theory above suggests a positive relation between ventricular volume and V 0. This relationship has never been reported for the RV though. However, for the left ventricle it is known that V 0 is smaller in patients with a normal ejection fraction, compared to patients with a lower ejection fract ...
... The theory above suggests a positive relation between ventricular volume and V 0. This relationship has never been reported for the RV though. However, for the left ventricle it is known that V 0 is smaller in patients with a normal ejection fraction, compared to patients with a lower ejection fract ...
Tetralogy of Fallot: from fetus to adult
... anatomical abnormalities: ventricular septal defect, overriding of the aorta, right ventricular outflow obstruction and right ventricular hypertrophy. Its prevalence ranges from 2,8 to 3,9 per 10.000 live births and accounts for 3,5% to 10% of all congenital heart diseases. In circa 40% of the patie ...
... anatomical abnormalities: ventricular septal defect, overriding of the aorta, right ventricular outflow obstruction and right ventricular hypertrophy. Its prevalence ranges from 2,8 to 3,9 per 10.000 live births and accounts for 3,5% to 10% of all congenital heart diseases. In circa 40% of the patie ...
Anomalous origin of the right pulmonary artery from the
... instead of main pulmonary artery, (also referred to as hemitruncus) is an unusual entity in which contralateral artery originates from the right ventricle via pulmonary truncus [1]. Right pulmonary artery is 5 to 6 times more frequently encountered, than the left, to arise from aorta [2]. The patien ...
... instead of main pulmonary artery, (also referred to as hemitruncus) is an unusual entity in which contralateral artery originates from the right ventricle via pulmonary truncus [1]. Right pulmonary artery is 5 to 6 times more frequently encountered, than the left, to arise from aorta [2]. The patien ...
NOT ALL AV DISSOCIATION = COMPLETE HEART
... Cause: usually idiopathic fibrosis of the SAN due to age. ECG findings: Sinus bradycardia, SAN block or even complete SAN arrest (as described above) “Tachy-Brady syndrome”- Brady is so severe ectopic pacemaker forms with Tachy rhythm. The Tachy overdrive suppresses all other pacemakers until it ...
... Cause: usually idiopathic fibrosis of the SAN due to age. ECG findings: Sinus bradycardia, SAN block or even complete SAN arrest (as described above) “Tachy-Brady syndrome”- Brady is so severe ectopic pacemaker forms with Tachy rhythm. The Tachy overdrive suppresses all other pacemakers until it ...
Evidence of Incomplete Left Ventricular Relaxation in the Dog
... these conditions. Thus, an increase in end diastolic pressure relative to diastolic volume may result from incomplete relaxation under conditions of sufficiently rapid heart rate or sufficiently prolonged ventricular relaxation. Incomplete relaxation does not occur when the next beat begins more tha ...
... these conditions. Thus, an increase in end diastolic pressure relative to diastolic volume may result from incomplete relaxation under conditions of sufficiently rapid heart rate or sufficiently prolonged ventricular relaxation. Incomplete relaxation does not occur when the next beat begins more tha ...
Tricuspid Valve Repair for Treatment and Prevention of Secondary
... regurgitation who have normal pulmonary artery pressures. The presumed mechanism for secondary tricuspid regurgitation with normal pulmonary artery pressure is left ventricular dysfunction or dilatation. Because the two ventricles are interdependent at the septum, left ventricular septal dysfunction ...
... regurgitation who have normal pulmonary artery pressures. The presumed mechanism for secondary tricuspid regurgitation with normal pulmonary artery pressure is left ventricular dysfunction or dilatation. Because the two ventricles are interdependent at the septum, left ventricular septal dysfunction ...
Left Ventricular Structural and Functional Changes in the Metabolic
... usually considered in terms of systolic failure with a reduced ejection fraction, there is growing appreciation that diastolic dysfunction, which has been relatively neglected in comparison with abnormalities in systolic function, may also play a significant role. Approximately half the patients pre ...
... usually considered in terms of systolic failure with a reduced ejection fraction, there is growing appreciation that diastolic dysfunction, which has been relatively neglected in comparison with abnormalities in systolic function, may also play a significant role. Approximately half the patients pre ...
Solid Tumour Section Heart: Cardiac Myxoma Atlas of Genetics and Cytogenetics
... pressure wave due to the sudden increase in left atrial volume as the tumour enters the cavity. Consequently, the loud S1 sound may also be preceded by an ejection sound due to forceful of the tumour from the left ventricle to the left atrium. In cases where the tumour remains in the atrium througho ...
... pressure wave due to the sudden increase in left atrial volume as the tumour enters the cavity. Consequently, the loud S1 sound may also be preceded by an ejection sound due to forceful of the tumour from the left ventricle to the left atrium. In cases where the tumour remains in the atrium througho ...
Single Anomalous Pulmonary Vein Opening in the Left Atrium
... The four pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. They are the only veins in the post-fetal human body that carry oxygenated blood. They commence in a capillary network upon the walls of the air sacs, and join together form one vessel for each lobule. T ...
... The four pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. They are the only veins in the post-fetal human body that carry oxygenated blood. They commence in a capillary network upon the walls of the air sacs, and join together form one vessel for each lobule. T ...
Congenital Heart Defects – A Review
... sound. An ejection systolic click is heard best at the apex and left mid and right upper sternal borders and the click does not vary with respiration. An ejection systolic murmur of grade II-V/VI intensity is usually heard best at the right upper sternal border with radiation into both carotid arter ...
... sound. An ejection systolic click is heard best at the apex and left mid and right upper sternal borders and the click does not vary with respiration. An ejection systolic murmur of grade II-V/VI intensity is usually heard best at the right upper sternal border with radiation into both carotid arter ...
Left Atrial Functional Reserve in Patients With Nonischemic Dilated
... Association functional class III. Diagnosis of DCM was based on the echocardiographic findings of a dilated left ventricle (left ventricular end-diastolic diameter [LVEDD] ⬎ 60 mm) with severely affected systolic function, left ventricular fractional shortening [LVFS] ⬍ 20%, and left ventricular eje ...
... Association functional class III. Diagnosis of DCM was based on the echocardiographic findings of a dilated left ventricle (left ventricular end-diastolic diameter [LVEDD] ⬎ 60 mm) with severely affected systolic function, left ventricular fractional shortening [LVFS] ⬍ 20%, and left ventricular eje ...
Approach to Arrhythmias
... Initial Evaluation of Stable Arrhythmias History Physical exam EKG (sinus rhythm, tachycardia) ...
... Initial Evaluation of Stable Arrhythmias History Physical exam EKG (sinus rhythm, tachycardia) ...
Nelson – pedi cardiology MURMURS ONLY
... • Due to the physiologic relative stenosis of the right and left pulmonary arteries • Usually disappears by 1 year of age • Grade I-II, midsystolic ejection, heard at the ULSB with radiation to the axillae and ...
... • Due to the physiologic relative stenosis of the right and left pulmonary arteries • Usually disappears by 1 year of age • Grade I-II, midsystolic ejection, heard at the ULSB with radiation to the axillae and ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.