IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
... ALVEN system [10]. Describing in detail these seven phases is beyond the scope of this paper. We wish to define, however, end-diastole and end-systole. By definition end-diastole occurs after the atrial contraction phase is complete, at which point the valves start to float upward, and the ventricul ...
... ALVEN system [10]. Describing in detail these seven phases is beyond the scope of this paper. We wish to define, however, end-diastole and end-systole. By definition end-diastole occurs after the atrial contraction phase is complete, at which point the valves start to float upward, and the ventricul ...
Transcatheter Valve Replacement with the Edwards SAPIEN XT
... animal tissue) that replaces your failing surgical heart valve. It is available in three sizes, 23 mm, 26 mm and 29 mm in diameter. Your Heart Team will determine the size that is right for you. ...
... animal tissue) that replaces your failing surgical heart valve. It is available in three sizes, 23 mm, 26 mm and 29 mm in diameter. Your Heart Team will determine the size that is right for you. ...
Atrial Septal Defects in Adults
... shunted flow causes right side dilatation, main pulmonary artery enlargement, and increase in pulmonary vasculature. Most ASDs are asymptomatic in infancy and present upon routine physical examination. The time it takes for symptoms such as heart failure, generalized edema, exercise intolerance or d ...
... shunted flow causes right side dilatation, main pulmonary artery enlargement, and increase in pulmonary vasculature. Most ASDs are asymptomatic in infancy and present upon routine physical examination. The time it takes for symptoms such as heart failure, generalized edema, exercise intolerance or d ...
Pathogenesis and pathophysiology of aortic valve stenosis in adults
... though the ventricular size remains normal. Left ventricular diastolic function is reduced. Excessive hypertrophy may cause decreased coronary blood flow reserve. Long‑lasting hypertrophy leads to increased collagen synthesis, interstitial fibrosis, and myocyte degeneration. In some patients, hy‑ p ...
... though the ventricular size remains normal. Left ventricular diastolic function is reduced. Excessive hypertrophy may cause decreased coronary blood flow reserve. Long‑lasting hypertrophy leads to increased collagen synthesis, interstitial fibrosis, and myocyte degeneration. In some patients, hy‑ p ...
Low-Flow, Low-Gradient Aortic Stenosis With Preserved
... eventually AVA are excluded and the patient is not of small stature, “low flow conditions” due to poor LV function or less commonly severe mitral regurgitation or mitral stenosis must be considered (2). However, in this situation a small AVA does not necessarily indicate severe AS. Left ventricular ...
... eventually AVA are excluded and the patient is not of small stature, “low flow conditions” due to poor LV function or less commonly severe mitral regurgitation or mitral stenosis must be considered (2). However, in this situation a small AVA does not necessarily indicate severe AS. Left ventricular ...
Anatomic variations of the cardiac valves and papillary muscles of
... An anatomic study of the AV valve in children showed that the commonest finding was 3 cusps, while a fourth cusp, if present, was classified as anterolateral in location. The number of tendinous cords was greater for the anterior and septal cusps than for the posterior and anterolateral cusps. In ad ...
... An anatomic study of the AV valve in children showed that the commonest finding was 3 cusps, while a fourth cusp, if present, was classified as anterolateral in location. The number of tendinous cords was greater for the anterior and septal cusps than for the posterior and anterolateral cusps. In ad ...
Repair of Post-Infarction Ventricular Free Wall Rupture With TachoSil®
... removed gradually, which immediately improved his hemodynamic indices. Standard cardiopulmonary bypass (CPB) was performed with mild hypothermia (32°C) and standard cardioplegic myocardial preservation. The heart was arrested, and the pericardium was opened completely. Thereafter, the remaining bloo ...
... removed gradually, which immediately improved his hemodynamic indices. Standard cardiopulmonary bypass (CPB) was performed with mild hypothermia (32°C) and standard cardioplegic myocardial preservation. The heart was arrested, and the pericardium was opened completely. Thereafter, the remaining bloo ...
ACQUIRED DISEASES OF PREGNANCY ANTICOAGULATION IN
... Aortic-valve replacement and palliative aortic balloon valvuloplasty have been performed during pregnancy with associated maternal and fetal risk. ...
... Aortic-valve replacement and palliative aortic balloon valvuloplasty have been performed during pregnancy with associated maternal and fetal risk. ...
Restoration of Regional Wall Motion by
... the loading conditions of the ventricle. Distinct worsening of wall motion has been demonstrated following interventions such as atrial pacing and intravenously administered pr~pranolol.'~"In both cases, the mechanism was said to be due to an imbalance of the myocardial oxygen demand-tosupply ratio, ...
... the loading conditions of the ventricle. Distinct worsening of wall motion has been demonstrated following interventions such as atrial pacing and intravenously administered pr~pranolol.'~"In both cases, the mechanism was said to be due to an imbalance of the myocardial oxygen demand-tosupply ratio, ...
PDF - Circulation: Cardiovascular Imaging
... of this epicardial and midseptal(s) tissue with some heterogeneity in signal intensity. On the basis of the tissue characteristics demonstrated by the various sequences, we felt that this tissue was primarily fat (lipoma) with some fibrous elements. Fibrous pericardium seemed to surround the heart a ...
... of this epicardial and midseptal(s) tissue with some heterogeneity in signal intensity. On the basis of the tissue characteristics demonstrated by the various sequences, we felt that this tissue was primarily fat (lipoma) with some fibrous elements. Fibrous pericardium seemed to surround the heart a ...
Near Field Flow Characteristics of the Bjork
... the mechanical heart valve, with data collected approximately 3–5 mm away from the valve seat. In the current study, we have modified the single shot mechanical heart valve chamber to include more confined regions (similar to sinuses found in vivo) on the upstream and downstream sides of the valve. ...
... the mechanical heart valve, with data collected approximately 3–5 mm away from the valve seat. In the current study, we have modified the single shot mechanical heart valve chamber to include more confined regions (similar to sinuses found in vivo) on the upstream and downstream sides of the valve. ...
The Cardiovascular System
... Stroke volume (the volume of blood ejected with each heartbeat) depends in turn on preload, myocardial contractility, and afterload. Preload refers to the load that stretches the cardiac muscle before contraction. The volume of blood in the right ventricle at the end of diastole, then, constitutes i ...
... Stroke volume (the volume of blood ejected with each heartbeat) depends in turn on preload, myocardial contractility, and afterload. Preload refers to the load that stretches the cardiac muscle before contraction. The volume of blood in the right ventricle at the end of diastole, then, constitutes i ...
Percutaneous Transcatheter Aortic Valve Closure Successfully
... have shown that by treating LVAD-associated AI, several hemodynamic parameters, including PCWP and left ventricular end-diastolic pressure, are significantly improved. PCWP has been shown to be an independent predictor of survival in patients with an ejection fraction ⬍20% from either ischemic or no ...
... have shown that by treating LVAD-associated AI, several hemodynamic parameters, including PCWP and left ventricular end-diastolic pressure, are significantly improved. PCWP has been shown to be an independent predictor of survival in patients with an ejection fraction ⬍20% from either ischemic or no ...
5 Comparative Cardiac Anatomy
... Anatomy remains as quite possibly one of the most important branches of medicine. To diagnose and treat medical conditions, normal structure and function must be known because it is the basis for determining what is abnormal. Furthermore, structure typically has a great impact on the function of an ...
... Anatomy remains as quite possibly one of the most important branches of medicine. To diagnose and treat medical conditions, normal structure and function must be known because it is the basis for determining what is abnormal. Furthermore, structure typically has a great impact on the function of an ...
An unusual case of a bicuspid aortic valve and non compaction of
... Myocardial noncompaction (MNC) is a rare genetic disorder thought to result from an error in myocardial morphogenesis. During normal organogenesis, the meshwork of trabeculations on the luminal aspect of the heart compact to form the muscular walls. Myocardial noncompaction is thought to arise when ...
... Myocardial noncompaction (MNC) is a rare genetic disorder thought to result from an error in myocardial morphogenesis. During normal organogenesis, the meshwork of trabeculations on the luminal aspect of the heart compact to form the muscular walls. Myocardial noncompaction is thought to arise when ...
CHAPTER 19: HEART
... The path of blood through the heart Systole = contraction of ventricles o Blood is going “into the SYStem” Diastole = relaxation of ventricles o If your heart is permanently relaxed you “Die” 1. Blood enters right atrium via superior and inferior vena cavae 2. Blood in right atrium flows through ...
... The path of blood through the heart Systole = contraction of ventricles o Blood is going “into the SYStem” Diastole = relaxation of ventricles o If your heart is permanently relaxed you “Die” 1. Blood enters right atrium via superior and inferior vena cavae 2. Blood in right atrium flows through ...
diseases of the cardiovascular system
... DIETARY SUPPLEMENTS THAT MAY HELP IMPROVE HEART FUNCTION, ESP IF THERE IS A DEFICIENCY ...
... DIETARY SUPPLEMENTS THAT MAY HELP IMPROVE HEART FUNCTION, ESP IF THERE IS A DEFICIENCY ...
Lecture Notes - Honors Human Physiology
... afterload, and at the same time, reduce ventricular preload. When arterial pressure is reduced, the ventricle can eject blood more rapidly, which increases the stroke volume and thereby decreases the end-systolic volume. ...
... afterload, and at the same time, reduce ventricular preload. When arterial pressure is reduced, the ventricle can eject blood more rapidly, which increases the stroke volume and thereby decreases the end-systolic volume. ...
Atrial Septal Defect
... working as well as it could. These medications help the kidneys remove excess fluid from the body. ...
... working as well as it could. These medications help the kidneys remove excess fluid from the body. ...
First-in-Human Transcatheter Tricuspid€Valve Repair in a
... CONCLUSIONS Transcatheter tricuspid valve repair could become an effective treatment for high–surgical risk patients who are non-responsive to optimal medical therapy. (J Am Coll Cardiol 2015;65:1190–5) © 2015 by the American College of Cardiology Foundation. ...
... CONCLUSIONS Transcatheter tricuspid valve repair could become an effective treatment for high–surgical risk patients who are non-responsive to optimal medical therapy. (J Am Coll Cardiol 2015;65:1190–5) © 2015 by the American College of Cardiology Foundation. ...
More on the right ventricle in pulmonary hypertension Robert Naeije and Stefano Ghio
... idiopathic, heritable or drug-related pulmonary arterial hypertension (PAH). Patients with a baseline RV ejection fraction (RVEF) >25% had better survival than those with a RVEF <25%. Furthermore, patients with a stable or increased RVEF at 3–6 months had a trend to better overall survival and a sig ...
... idiopathic, heritable or drug-related pulmonary arterial hypertension (PAH). Patients with a baseline RV ejection fraction (RVEF) >25% had better survival than those with a RVEF <25%. Furthermore, patients with a stable or increased RVEF at 3–6 months had a trend to better overall survival and a sig ...
biomaterials ent 311/4
... There are numerous complications and diseases of the heart valves that prevent the proper flow of blood. Heart valve diseases fall into two categories, ...
... There are numerous complications and diseases of the heart valves that prevent the proper flow of blood. Heart valve diseases fall into two categories, ...
influence of the size of aortic valve prostheses on
... women. Doppler and conventional echocardiographic studies were performed in the 10 days preceding the operation and between 10 and 40 months (mean 18 months) after the operation. The patients receiving larger valve sizes had significantly larger body surface areas than those receiving smaller valve ...
... women. Doppler and conventional echocardiographic studies were performed in the 10 days preceding the operation and between 10 and 40 months (mean 18 months) after the operation. The patients receiving larger valve sizes had significantly larger body surface areas than those receiving smaller valve ...
Sports and cardiology: an explosive cocktail?
... In case of parietal hypertrophy in a high-level athlete, which of the following proposition(s) is/are in favour of hypertrophic cardiomyopathy A) An isolated dilation of the left atrium B) An asymetrical hypertrophy, mostly in apical C) Interventricular septum hypertrophy > 15 mm D) A higher A mitr ...
... In case of parietal hypertrophy in a high-level athlete, which of the following proposition(s) is/are in favour of hypertrophic cardiomyopathy A) An isolated dilation of the left atrium B) An asymetrical hypertrophy, mostly in apical C) Interventricular septum hypertrophy > 15 mm D) A higher A mitr ...
Transcatheter Aortic Valve Implantation (TAVI)
... to replace the narrowed valve with a new artificial one. However, due to your overall medical condition, you are considered a high-risk candidate for conventional surgery, but may be suitable for a transcatheter aortic valve replacement. What is Transcatheter Aortic ...
... to replace the narrowed valve with a new artificial one. However, due to your overall medical condition, you are considered a high-risk candidate for conventional surgery, but may be suitable for a transcatheter aortic valve replacement. What is Transcatheter Aortic ...
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.