Left ventricular systolic function assessment in patients with dilated
... systolic and diastolic pressures. Contraction of the heart expels a percentage of oxygenated blood known as the cardiac output, given as product of heart rate and stroke volume. The period of contraction is called systole and that of relaxation, diastole. The valves between the atria and ventricles ...
... systolic and diastolic pressures. Contraction of the heart expels a percentage of oxygenated blood known as the cardiac output, given as product of heart rate and stroke volume. The period of contraction is called systole and that of relaxation, diastole. The valves between the atria and ventricles ...
Ventricular Septal Defect (VSD)
... Ventricular septal defects (VSD) are a congenital [1] anatomical defect of the heart in which there is a communication between the left and right ventricles. This abnormal opening allows blood to flow from one ventricle to the other, usually from the left to the right when the heart contracts to mov ...
... Ventricular septal defects (VSD) are a congenital [1] anatomical defect of the heart in which there is a communication between the left and right ventricles. This abnormal opening allows blood to flow from one ventricle to the other, usually from the left to the right when the heart contracts to mov ...
MANAGEMENT OF PATIENTS WITH VALVULAR HEART DISEASE
... valve leaflet in particular) are preserved in the majority of patients. . In patients with chronic atrial fibrillation presenting for a mitral valve operation, a concomitant maze procedure or ...
... valve leaflet in particular) are preserved in the majority of patients. . In patients with chronic atrial fibrillation presenting for a mitral valve operation, a concomitant maze procedure or ...
Evidence of apoptosis in right ventricular dysfunction in
... possibility of LV affecting the RV function. It was observed that LV was under filled in valve disease cases with high RVSP15. In the present study, we added a third group of ASD with RVSP<40 mmHg for comparison with the valve disease group having similar RVSP. RV dysfunction was significantly highe ...
... possibility of LV affecting the RV function. It was observed that LV was under filled in valve disease cases with high RVSP15. In the present study, we added a third group of ASD with RVSP<40 mmHg for comparison with the valve disease group having similar RVSP. RV dysfunction was significantly highe ...
Pumping mechanics of the left ventricle based on thick
... Myocardial fiber orientation smoothly and continuously varies through the wall which spiral and terminates on surface. Cardiac cycle is considered by specifying the pressure of opening and closing of the valves in the left ventricle. The properties of this study under changes of fiber strain, tensio ...
... Myocardial fiber orientation smoothly and continuously varies through the wall which spiral and terminates on surface. Cardiac cycle is considered by specifying the pressure of opening and closing of the valves in the left ventricle. The properties of this study under changes of fiber strain, tensio ...
Morphologic demonstration of spontaneous and
... *Secondary to operative damage of the left circumflex coronary artery at the time of mitral valve replacement for severe mitral regurgitation at age 32. ICD indicates implantable cardioverter defibrillator; VSD, ventricular septal defect; –, not available. ...
... *Secondary to operative damage of the left circumflex coronary artery at the time of mitral valve replacement for severe mitral regurgitation at age 32. ICD indicates implantable cardioverter defibrillator; VSD, ventricular septal defect; –, not available. ...
Valvular Heart Disease and Postoperative Considerations
... overload. Also, if the patient has pulmonary artery hypertension or coexisting right ventricular (RV) failure, the pulmonary artery diastolic pressure and/or central venous pressure, will have a higher baseline. Again, these indices do not necessarily represent fluid overload. If there is tricuspid ...
... overload. Also, if the patient has pulmonary artery hypertension or coexisting right ventricular (RV) failure, the pulmonary artery diastolic pressure and/or central venous pressure, will have a higher baseline. Again, these indices do not necessarily represent fluid overload. If there is tricuspid ...
06.Heart murmur syndrome congenital and acquired heart disease
... The detection rate of heart murmurs in children of different age groups varies and increases with age. The physical nature of both organic and functional heart murmur has long attracted the attention of researchers. In the last century it has been suggested that the cause of heart murmurs are oscill ...
... The detection rate of heart murmurs in children of different age groups varies and increases with age. The physical nature of both organic and functional heart murmur has long attracted the attention of researchers. In the last century it has been suggested that the cause of heart murmurs are oscill ...
In Vitro Studies (FDA page 15)
... 1,800 BPM) used to determine the durability of replacement heart valves and other cardiac devices under physiological loading. Clear viewports allow imaging of the valves and pressure ports allow monitoring of the dynamic pressures up and downstream of the valves. The HiTest Data Acquisition System ...
... 1,800 BPM) used to determine the durability of replacement heart valves and other cardiac devices under physiological loading. Clear viewports allow imaging of the valves and pressure ports allow monitoring of the dynamic pressures up and downstream of the valves. The HiTest Data Acquisition System ...
Regulation of the Cardiovascular System in Crayfish12 The
... FIG. 6. Comparison of the relative chronotropic effects of FaRPs (FMRFamide-related peptides) on in situ Procambarus clarkii hearts. Each of the 5 hearts tested was exposed to all three concentrations of each of the six peptides. The six peptides were first applied at the lowest concentration, then ...
... FIG. 6. Comparison of the relative chronotropic effects of FaRPs (FMRFamide-related peptides) on in situ Procambarus clarkii hearts. Each of the 5 hearts tested was exposed to all three concentrations of each of the six peptides. The six peptides were first applied at the lowest concentration, then ...
Cardiac Anatomy
... repolarization, and extends from the end of the QRS interval to the beginning of the T wave • Elevation or depression may indicate heart damage such as myocardial infarction (MI) • QT interval represents the total time required for depolarization and repolarization of the ventricles, and extends fro ...
... repolarization, and extends from the end of the QRS interval to the beginning of the T wave • Elevation or depression may indicate heart damage such as myocardial infarction (MI) • QT interval represents the total time required for depolarization and repolarization of the ventricles, and extends fro ...
CARDIOVASCULAR SYSTEM
... Prevents back flow of blood from ventricles into atria during ventricular contraction ~ systole Valves close during ventricular contraction ...
... Prevents back flow of blood from ventricles into atria during ventricular contraction ~ systole Valves close during ventricular contraction ...
Percutaneous implantation of self-expandable aortic
... therapy of choice in patients with symptomatic AS, but the mortality after isolated surgical procedures is 1–3% in patients under 70 years, and 4–8% above 70 years 1. In clinical practice at least 30% of patients with severe symptomatic AS do not undergo surgery for replacement of the aortic valve, ...
... therapy of choice in patients with symptomatic AS, but the mortality after isolated surgical procedures is 1–3% in patients under 70 years, and 4–8% above 70 years 1. In clinical practice at least 30% of patients with severe symptomatic AS do not undergo surgery for replacement of the aortic valve, ...
Understanding your child`s heart Atrial septal defect
... 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 body). Blood flows from the right side of the heart, through the pulmonary valve into the pulmonary arter ...
... 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 body). Blood flows from the right side of the heart, through the pulmonary valve into the pulmonary arter ...
Exercise 7.7 Cardiovascular System and Physical Fitness
... so that the time between the T wave of one ECG tracing and the P wave of the next tracing is significantly reduced. At higher heart rates the increased conduction velocity shortens the period of systole as shown by a decrease in the QRS-T interval. 8. During the P wave depolarization of the atria, p ...
... so that the time between the T wave of one ECG tracing and the P wave of the next tracing is significantly reduced. At higher heart rates the increased conduction velocity shortens the period of systole as shown by a decrease in the QRS-T interval. 8. During the P wave depolarization of the atria, p ...
chapt19_student - Human Anatomy and Physiology
... • atrioventricular (AV) valves – controls blood flow between atria and ventricles – right AV valve has 3 cusps (tricuspid valve) – left AV valve has 2 cusps (mitral or bicuspid valve) – chordae tendineae - cords connect AV valves to papillary muscles on floor of ventricles • prevent AV valves from f ...
... • atrioventricular (AV) valves – controls blood flow between atria and ventricles – right AV valve has 3 cusps (tricuspid valve) – left AV valve has 2 cusps (mitral or bicuspid valve) – chordae tendineae - cords connect AV valves to papillary muscles on floor of ventricles • prevent AV valves from f ...
diseases of the cardiovascular system
... – ____________________________ – Systolic murmur (soft – moderate) at the left heart base – ECG: evidence of left ventricular enlargement - ↑ ...
... – ____________________________ – Systolic murmur (soft – moderate) at the left heart base – ECG: evidence of left ventricular enlargement - ↑ ...
M-Mode Echocardiography
... the heart.1,2 The ultrasound echoes reflected from the various cardiac interfaces are represented as dots, and their intensities by brightness (B-mode). With the sweep of the screen (or the recording paper), the location of each interface is represented by a line, which provides information about it ...
... the heart.1,2 The ultrasound echoes reflected from the various cardiac interfaces are represented as dots, and their intensities by brightness (B-mode). With the sweep of the screen (or the recording paper), the location of each interface is represented by a line, which provides information about it ...
Properties of cardiac muscle Properties of Cardiac Muscle
... – Frank-Starling law of the heart: the heart can change its CO according to the incoming volume of blood • At rest, cardiac muscle cells are shorter than optimal length • Must be a degree of stretch of cardiac muscle cells before they contract ...
... – Frank-Starling law of the heart: the heart can change its CO according to the incoming volume of blood • At rest, cardiac muscle cells are shorter than optimal length • Must be a degree of stretch of cardiac muscle cells before they contract ...
Tetralogy of Fallot (TOF) - University of Maryland School of Medicine
... most extreme form of TOF is referred to as pulmonary atresia, because in those patients there is no functional pulmonary valve. The right ventricular outflow obstruction leads to thickening of the right ventricle, or right ventricular hypertrophy. What causes TOF? The exact cause of TOF is unknown. ...
... most extreme form of TOF is referred to as pulmonary atresia, because in those patients there is no functional pulmonary valve. The right ventricular outflow obstruction leads to thickening of the right ventricle, or right ventricular hypertrophy. What causes TOF? The exact cause of TOF is unknown. ...
Document
... (e) Ventricular diastole—early: As ventricles relax, pressure in ventricles drops; blood flows back against cusps of semilunar valves and forces them closed. Blood flows into the relaxed atria. ...
... (e) Ventricular diastole—early: As ventricles relax, pressure in ventricles drops; blood flows back against cusps of semilunar valves and forces them closed. Blood flows into the relaxed atria. ...
diseases of the cardiovascular system
... • In the 1980’s DCM in cats was one of the most commonly diagnosed heart diseases. It was discovered that this was caused by a deficiency of TAURINE, an amino acid. • Since that time commercial foods have added taurine to feline diets, which has significantly decreased the number of cases of feline ...
... • In the 1980’s DCM in cats was one of the most commonly diagnosed heart diseases. It was discovered that this was caused by a deficiency of TAURINE, an amino acid. • Since that time commercial foods have added taurine to feline diets, which has significantly decreased the number of cases of feline ...
Does a Pacemaker help Atrial Fibrillation?
... A murmur is a sound heard with a stethoscope when listening to the heart. It occurs when there is turbulent blood flow within the heart. Some murmurs, especially in children, are “innocent” murmurs. This means that the murmur is caused by natural blood flow across the valve or across an area of the ...
... A murmur is a sound heard with a stethoscope when listening to the heart. It occurs when there is turbulent blood flow within the heart. Some murmurs, especially in children, are “innocent” murmurs. This means that the murmur is caused by natural blood flow across the valve or across an area of the ...
Artificial heart valve
An artificial heart valve is a device implanted in the heart of a patient with valvular heart disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery.Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are evolved to forms that perform the functional requirement of inducing unidirectional blood flow through the valve structure from one chamber of the heart to another. Natural heart valves become dysfunctional for a variety of pathological causes. Some pathologies may require complete surgical replacement of the natural heart valve with a heart valve prosthesis.