Myocardial enterovirus infection with left ventricular
... patients in the enterovirus-negative group underwent heart transplantation (p < 0.05). The surviving 19 enterovirus-positive patients had a decrease in mean left ventricular end-diastolic diameter from 66 to 61 mm (p < 0.05) and a mean increase in left ventricular ejection fraction from 0.35 to 0.43 ...
... patients in the enterovirus-negative group underwent heart transplantation (p < 0.05). The surviving 19 enterovirus-positive patients had a decrease in mean left ventricular end-diastolic diameter from 66 to 61 mm (p < 0.05) and a mean increase in left ventricular ejection fraction from 0.35 to 0.43 ...
Stroke Volume, Regulation of Stroke Volume, Cardiac
... - Since the right and left sides of the heart are two separate pumps, it is possible for one of them to fail independently of the other. - In left-sided failure, blood pumped normally to the lungs by the RV is not pumped out by the failing LV → blood accumulates in pulmonary circulation increasing t ...
... - Since the right and left sides of the heart are two separate pumps, it is possible for one of them to fail independently of the other. - In left-sided failure, blood pumped normally to the lungs by the RV is not pumped out by the failing LV → blood accumulates in pulmonary circulation increasing t ...
Mitral Annular Plane Systolic Excursion as a Surrogate for Left
... the trough and peak of annular motion, and using the calipers on the digitized system. Once the student demonstrated adequate skill at performing these measurements, the student’s independent MAPSE measurements began for the study purpose. The average MAPSE value (mean of septal and lateral values) ...
... the trough and peak of annular motion, and using the calipers on the digitized system. Once the student demonstrated adequate skill at performing these measurements, the student’s independent MAPSE measurements began for the study purpose. The average MAPSE value (mean of septal and lateral values) ...
EMBC`2009 - 2nd-paper - final v2
... that the aortic valve opens typically 30 msec after the closure of AV valves. However, it should be pointed out that this could change with cardiac pathology or load variations. Hence, we have employed a broad standard deviation in the Gaussian distribution to accommodate larger variations from the ...
... that the aortic valve opens typically 30 msec after the closure of AV valves. However, it should be pointed out that this could change with cardiac pathology or load variations. Hence, we have employed a broad standard deviation in the Gaussian distribution to accommodate larger variations from the ...
Antianginal Drugs
... and cardiac output in patients with systolic heart failure (the decreased preload lowers the ventricular filling pressure, so allowing a more efficient ventricular contraction). They are not used routinely in heart failure but can be used when: ① symptoms of pulmonary congestion predominate (redistr ...
... and cardiac output in patients with systolic heart failure (the decreased preload lowers the ventricular filling pressure, so allowing a more efficient ventricular contraction). They are not used routinely in heart failure but can be used when: ① symptoms of pulmonary congestion predominate (redistr ...
Acute Management of Wide QRS
... Patients with paroxysmal arrhythmias are most often asymptomatic at the time of evaluation. Arrhythmia-related symptoms include palpitations; fatigue; lightheadedness; chest discomfort; dyspnea; presyncope; or, more rarely, syncope. ...
... Patients with paroxysmal arrhythmias are most often asymptomatic at the time of evaluation. Arrhythmia-related symptoms include palpitations; fatigue; lightheadedness; chest discomfort; dyspnea; presyncope; or, more rarely, syncope. ...
Noninvasive epicardial and endocardial mapping of premature
... Methods and The study enrolled 20 patients with monomorphic premature ventricular contractions (PVCs) or ventricular tachycarresults dia (VT). All patients underwent pre-procedural computed tomography or magnetic resonance imaging of the heart and torso. Radiographic data were semi-automatically pro ...
... Methods and The study enrolled 20 patients with monomorphic premature ventricular contractions (PVCs) or ventricular tachycarresults dia (VT). All patients underwent pre-procedural computed tomography or magnetic resonance imaging of the heart and torso. Radiographic data were semi-automatically pro ...
Medical Policy Microvolt T
... A 2005 review by Gehi et al. evaluated the predictive value of MTWA in determining risk stratification of ventricular tachyarrhythmic events (VTE) across a variety of subjects. The study found that the presence of significant MTWA predicted nearly a fourfold risk of VTE compared to the absence of MT ...
... A 2005 review by Gehi et al. evaluated the predictive value of MTWA in determining risk stratification of ventricular tachyarrhythmic events (VTE) across a variety of subjects. The study found that the presence of significant MTWA predicted nearly a fourfold risk of VTE compared to the absence of MT ...
Atrial fibrillation
... may affect either healthy subjects or patients with heart disease or other disease. Arrhythmias vary from benign to fatal; they are amongst major causes of sudden death. ...
... may affect either healthy subjects or patients with heart disease or other disease. Arrhythmias vary from benign to fatal; they are amongst major causes of sudden death. ...
Safety of Minimally Invasive Mitral Valve Surgery Without
... Conversely, robotic approach with or without port access methods, while comparable to conventional surgery in expert hands [15, 16], is associated with higher cost and the need for a steep learning curve of new sets of skills. Moreover, the topography of the valve differs from that observed in conve ...
... Conversely, robotic approach with or without port access methods, while comparable to conventional surgery in expert hands [15, 16], is associated with higher cost and the need for a steep learning curve of new sets of skills. Moreover, the topography of the valve differs from that observed in conve ...
cardiac cycle
... ejection; this volume is called the stroke or systolic volume. About 60 ml of blood remains in each ventricle at the end of systole – the end-systolic volume (fig. 2.2). The ratio of the stroke volume and the end-diastolic one is called the ejection fraction. It is the fraction of the ventricular bl ...
... ejection; this volume is called the stroke or systolic volume. About 60 ml of blood remains in each ventricle at the end of systole – the end-systolic volume (fig. 2.2). The ratio of the stroke volume and the end-diastolic one is called the ejection fraction. It is the fraction of the ventricular bl ...
cardiology grand rounds - Minneapolis Heart Institute Foundation
... – Mitral valve prolapse (aka "degenerative" or myxomatous mitral valve disease) – Rheumatic heart disease – Infective endocarditis ...
... – Mitral valve prolapse (aka "degenerative" or myxomatous mitral valve disease) – Rheumatic heart disease – Infective endocarditis ...
Sample Chapter - Oncology Nursing Society
... Transthoracic echocardiography: This is an initial noninvasive screening tool for assessing gross cardiac structure and function. However, it is not very sensitive for cardiac tumors because it can often miss structures in the posterior of the atrium and ventricles. The tumor has similar visual char ...
... Transthoracic echocardiography: This is an initial noninvasive screening tool for assessing gross cardiac structure and function. However, it is not very sensitive for cardiac tumors because it can often miss structures in the posterior of the atrium and ventricles. The tumor has similar visual char ...
No Slide Title
... control irregular heartbeat until a pacemaker can be implanted. Phenylephrine – Neo-Synephrine: used to treat shock and low blood pressure. Ephedrine – used to counteract the hypotensive effects of anesthesia. Also useful as a pressor agent in hypotensive states following sympathectomy, or follo ...
... control irregular heartbeat until a pacemaker can be implanted. Phenylephrine – Neo-Synephrine: used to treat shock and low blood pressure. Ephedrine – used to counteract the hypotensive effects of anesthesia. Also useful as a pressor agent in hypotensive states following sympathectomy, or follo ...
left atrium volume as a surrogate marker of left ventricular diastolic
... Left ventricular impaired relaxation (LVIR) or left ventricular diastolic dysfunction (LVDD), is common, especially in the elderly. It is considered an important prognostic indicator of various cardiac diseases1. Relaxation abnormality is one of the earliest manifestations of cardiac dysfunction and ...
... Left ventricular impaired relaxation (LVIR) or left ventricular diastolic dysfunction (LVDD), is common, especially in the elderly. It is considered an important prognostic indicator of various cardiac diseases1. Relaxation abnormality is one of the earliest manifestations of cardiac dysfunction and ...
Constrictive Pericarditis: A Case Study
... subjected to the constricting effects of the scarred pericardium, increased pressure can result in cardiac compression or tamponade with resultant hemodynamic deterioration; this entity is known as effusive CP.3,4 In such cases, the constrictive hemodynamics are masked by tamponade and may only beco ...
... subjected to the constricting effects of the scarred pericardium, increased pressure can result in cardiac compression or tamponade with resultant hemodynamic deterioration; this entity is known as effusive CP.3,4 In such cases, the constrictive hemodynamics are masked by tamponade and may only beco ...
ventricular hypertrophy
... bulges forward and to the left so that the whole antero-lateral surface of the heart consists of right ventricular wall. This fact has been frequently confirmed during the cardiac catheterization of cases of the tetralogy of Fallot when the tip of the radio-opaque catheter can be seen on the X-ray s ...
... bulges forward and to the left so that the whole antero-lateral surface of the heart consists of right ventricular wall. This fact has been frequently confirmed during the cardiac catheterization of cases of the tetralogy of Fallot when the tip of the radio-opaque catheter can be seen on the X-ray s ...
Right Heart Dysfunction After Left Ventricular Assist Device
... Surgeons, Fort Lauderdale, FL, Jan 28 –30, 2008. Address correspondence to Dr Conte, Division of Cardiac Surgery, Johns Hopkins Medical Institutions, Blalock 618, 600 N Wolfe St, Baltimore, ...
... Surgeons, Fort Lauderdale, FL, Jan 28 –30, 2008. Address correspondence to Dr Conte, Division of Cardiac Surgery, Johns Hopkins Medical Institutions, Blalock 618, 600 N Wolfe St, Baltimore, ...
Ventricular-arterial coupling in patients with heart
... with ACE-inhibitors and beta-blockers, respectively. All patients were successfully implanted with CRT devices, defibrillators (34 patients, 44%) or pacemakers depending on the indication. The target veins into which the LV lead was implanted were: basal posterior–lateral in 6 patients (8%), basal la ...
... with ACE-inhibitors and beta-blockers, respectively. All patients were successfully implanted with CRT devices, defibrillators (34 patients, 44%) or pacemakers depending on the indication. The target veins into which the LV lead was implanted were: basal posterior–lateral in 6 patients (8%), basal la ...
Exercise, the Athlete`s Heart, and Sudden Cardiac Death
... This curvilinear relationship11 has again been shown in a study from Taiwan, which demonstrated that after 15 minutes a day of exercise, every additional 15 minutes of daily exercise conferred an additional reduction of 4% in all-cause mortality, approaching 100 minutes per day, after which the ben ...
... This curvilinear relationship11 has again been shown in a study from Taiwan, which demonstrated that after 15 minutes a day of exercise, every additional 15 minutes of daily exercise conferred an additional reduction of 4% in all-cause mortality, approaching 100 minutes per day, after which the ben ...
management and follow up of prosthetic heart valves - Heart
... or most haemodynamically relevant heart valve lesions, surgical therapy remains the treatment of choice. It has been consistently shown to provide long lasting relief of symptoms, and its superiority over medical treatment in this regard has been well established. However, in patients undergoing the ...
... or most haemodynamically relevant heart valve lesions, surgical therapy remains the treatment of choice. It has been consistently shown to provide long lasting relief of symptoms, and its superiority over medical treatment in this regard has been well established. However, in patients undergoing the ...
Mitral Valve Prolapse is a Frequent Cardiovascular
... Mitral valve prolapse is frequent, with a prevalence of 0.6% to 2.4% in the general population,2 and between 33% and 62% in patients with anorexia nervosa.3,4 The differences in prevalence may be influenced by the clinical and echocardiographic criteria used to diagnose the disorder. In our study, m ...
... Mitral valve prolapse is frequent, with a prevalence of 0.6% to 2.4% in the general population,2 and between 33% and 62% in patients with anorexia nervosa.3,4 The differences in prevalence may be influenced by the clinical and echocardiographic criteria used to diagnose the disorder. In our study, m ...
presentation source
... The P Waves Appear & Are Not Connected To Any QRS Complex The QRS Are Abherrantly Wide Ultimate Ventricular Rate Is Often Very Bradycardic ...
... The P Waves Appear & Are Not Connected To Any QRS Complex The QRS Are Abherrantly Wide Ultimate Ventricular Rate Is Often Very Bradycardic ...
Three-Dimensional Transthoracic Echocardiography
... Substantial tricuspid regurgitation due to tricuspid leaflet dysfunction caused by ICD leads has been noted in the medical literature,1-4 although its true prevalence is not well established. The mechanisms of devicerelated tricuspid regurgitation include leaflet perforation or laceration, interfere ...
... Substantial tricuspid regurgitation due to tricuspid leaflet dysfunction caused by ICD leads has been noted in the medical literature,1-4 although its true prevalence is not well established. The mechanisms of devicerelated tricuspid regurgitation include leaflet perforation or laceration, interfere ...
Interaction between the septum and the left (right) ventricular free
... both the ventricles and the septum. By describing the behaviour of the left (right) ventricular free wall, atria and septum using the variable elastance models, it is possible to reproduce their interactions. By relating the mechanical properties of both atria and both ventricles to the electrocardi ...
... both the ventricles and the septum. By describing the behaviour of the left (right) ventricular free wall, atria and septum using the variable elastance models, it is possible to reproduce their interactions. By relating the mechanical properties of both atria and both ventricles to the electrocardi ...
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.