the clinical value of chest leads
... played a more important role than those of any report of this work was published in 1930; the final other nationality. Waller was the first to show that report came out in 1932, and was nearly simultaneous the electrical activities of the human heart could with the paper on the use of a single chest ...
... played a more important role than those of any report of this work was published in 1930; the final other nationality. Waller was the first to show that report came out in 1932, and was nearly simultaneous the electrical activities of the human heart could with the paper on the use of a single chest ...
Global Bi-ventricular endocardial distribution of activation rate
... that the excitation frequency is an important index in VF that can reflect the underlying myocardial pathophysiology; it may also be predictive of the defibrillation threshold [10]. Previous studies have reported that the dynamics of VF in heart failure (HF) hearts differ from those in normal hearts ...
... that the excitation frequency is an important index in VF that can reflect the underlying myocardial pathophysiology; it may also be predictive of the defibrillation threshold [10]. Previous studies have reported that the dynamics of VF in heart failure (HF) hearts differ from those in normal hearts ...
The Fontan circulation: a challenge toWilliam Harvey?
... the pulmonary circulation with its increased pulmonary vascular resistance has a major impact on the systemic venous return. The venous return is classically divided into the superior and inferior vena caval territories, the former carrying about 30% of the flow and the latter about 70%. Division of ...
... the pulmonary circulation with its increased pulmonary vascular resistance has a major impact on the systemic venous return. The venous return is classically divided into the superior and inferior vena caval territories, the former carrying about 30% of the flow and the latter about 70%. Division of ...
Measurement of Left Ventricular Wall Thickness and
... ally, the first characteristic motion seen was the mitral valve, especially the anterior leaflet.15 Anteriorly, the motion of the interventricular septum could be seen," requiring only a slight change in position of the transducer. The transducer was then directed more laterally and/or inferiorly to ...
... ally, the first characteristic motion seen was the mitral valve, especially the anterior leaflet.15 Anteriorly, the motion of the interventricular septum could be seen," requiring only a slight change in position of the transducer. The transducer was then directed more laterally and/or inferiorly to ...
Transcatheter aortic valve implantation
... of elderly patients with severe symptomatic AS included coronary artery disease requiring in Europe are not referred for surgical AVR8. revascularisation, severe renal insufficiency, and Patients who are not referred for surgery are more life expectancy <12 months due to non-cardiac likely to be old ...
... of elderly patients with severe symptomatic AS included coronary artery disease requiring in Europe are not referred for surgical AVR8. revascularisation, severe renal insufficiency, and Patients who are not referred for surgery are more life expectancy <12 months due to non-cardiac likely to be old ...
electrical conduction system of the heart
... ♥ Both atria contract simultaneously then both ventricles contract ♥ Blood is ejected into both the pulmonary and systemic circulation when the ventricles contract ♥ Both the tricuspid and mitral valves will also close during ventricular contraction ...
... ♥ Both atria contract simultaneously then both ventricles contract ♥ Blood is ejected into both the pulmonary and systemic circulation when the ventricles contract ♥ Both the tricuspid and mitral valves will also close during ventricular contraction ...
Recommendations for Cardiac Chamber Quantification by
... mild, moderate, and severe abnormalities on the basis of SDs above or below the reference limit derived from a group of healthy people. The advantage of this method is that these data readily exist for most echocardiographic parameters. However, this approach is fundamentally flawed. First, not all ...
... mild, moderate, and severe abnormalities on the basis of SDs above or below the reference limit derived from a group of healthy people. The advantage of this method is that these data readily exist for most echocardiographic parameters. However, this approach is fundamentally flawed. First, not all ...
Green tea extract catechin improves internal cardiac muscle
... hypersensitivity of myofibrils to Ca2+ is a key factor associated with impaired relaxation in the heart [9, 10]. Furthermore, we have demonstrated, for the first time that desensitization of Ca2+ hypersensitivity in RCM can correct phenotypes and rescue the RCM mice [11, 12]. In applying green tea e ...
... hypersensitivity of myofibrils to Ca2+ is a key factor associated with impaired relaxation in the heart [9, 10]. Furthermore, we have demonstrated, for the first time that desensitization of Ca2+ hypersensitivity in RCM can correct phenotypes and rescue the RCM mice [11, 12]. In applying green tea e ...
The Heart as a Pump
... During the lab you will use the apparatus shown in Figure 1-1. Important functions of the heart are represented by the syringe which fills with fluid coming from one source (the beaker) and then dispenses the fluid to another location (the metering reservoir). This happens because there is a check v ...
... During the lab you will use the apparatus shown in Figure 1-1. Important functions of the heart are represented by the syringe which fills with fluid coming from one source (the beaker) and then dispenses the fluid to another location (the metering reservoir). This happens because there is a check v ...
Diagnosis and Treatment of Bicuspid Aortic Valve Disease
... three equal-sized valvular leaflets (or cusps) and has three cooptation lines where these three valves meet. In congenital BAV, however, there are usually two different-sized functional valvular leaflets and one cooptation line. In approximately half of the cases, there is a short raphé. Valvular st ...
... three equal-sized valvular leaflets (or cusps) and has three cooptation lines where these three valves meet. In congenital BAV, however, there are usually two different-sized functional valvular leaflets and one cooptation line. In approximately half of the cases, there is a short raphé. Valvular st ...
total pulmonary venous drainage through a persistent left superior
... able to find accounts of only nine other patients, six of whom were babies diagnosed at autopsy. Another, although only diagnosed in life as having abnormal pulmonary venous drainage into the right superior vena cava by Johnson and McRae (1948), had a teleradiogram similar to those now thought to be ...
... able to find accounts of only nine other patients, six of whom were babies diagnosed at autopsy. Another, although only diagnosed in life as having abnormal pulmonary venous drainage into the right superior vena cava by Johnson and McRae (1948), had a teleradiogram similar to those now thought to be ...
The importance of long axis function
... cause, due to the hydrostatic pressure, a shift of blood from the periphery to the intrathoracic circulation, and due to this increased venous return by hydrostatically induced volume shift, it has been questioned if hydrotherapy is an appropriate exercise form for patients with chronic heart failur ...
... cause, due to the hydrostatic pressure, a shift of blood from the periphery to the intrathoracic circulation, and due to this increased venous return by hydrostatically induced volume shift, it has been questioned if hydrotherapy is an appropriate exercise form for patients with chronic heart failur ...
Imaging for Transcatheter Aortic Valve Replacement
... commonly the bicuspid aortic valve, may also result in stenosis and is more common in young adults. AS is a disease continuum with no single value that defines severity, therefore it is graded on the basis of a variety of hemodynamic and natural history data. According to current guidelines, severe ...
... commonly the bicuspid aortic valve, may also result in stenosis and is more common in young adults. AS is a disease continuum with no single value that defines severity, therefore it is graded on the basis of a variety of hemodynamic and natural history data. According to current guidelines, severe ...
Prognostic value of the ECG on admission embolism
... echocardiographic findings indicating right ventricular pressure overload and/or PH (right ventricular dilatation, paradoxical septal wall motion, loss of inspiratory collapse of the inferior vena cava, or tricuspid regurgitation jet velocity .2.8 m?s-1 or ,2.5 m?s-1 in the absence of inspiratory co ...
... echocardiographic findings indicating right ventricular pressure overload and/or PH (right ventricular dilatation, paradoxical septal wall motion, loss of inspiratory collapse of the inferior vena cava, or tricuspid regurgitation jet velocity .2.8 m?s-1 or ,2.5 m?s-1 in the absence of inspiratory co ...
The Impact of Fetal Echocardiography on Outcome of Patients with
... screen, but along with the clinical examination it helps to minimise morbi-dity and mortality [19]. In this study we found no patient with SaO2 lower than 80% before the prostaglandine infusion was started in the prenatally diagnosed group. Some studies sustain our findings [2]. This finding suggest ...
... screen, but along with the clinical examination it helps to minimise morbi-dity and mortality [19]. In this study we found no patient with SaO2 lower than 80% before the prostaglandine infusion was started in the prenatally diagnosed group. Some studies sustain our findings [2]. This finding suggest ...
Study of the Myocardial Contraction and Relaxation Velocities
... under physical or pharmacological stress, enhancing the sensitivity and specificity of the examinations of patients at rest. However, the interpretation of the segmental function in these tests can be limited by the learning curve, quality of imaging, and accuracy of the interpretation of the result ...
... under physical or pharmacological stress, enhancing the sensitivity and specificity of the examinations of patients at rest. However, the interpretation of the segmental function in these tests can be limited by the learning curve, quality of imaging, and accuracy of the interpretation of the result ...
Assessment of Mechanical Cardiac Function in Elite Athletes
... regions of Italy that are well known for congenital cardiac complications have screened young athletes since the late 1970’s to further reduce the rate of mortality [10]. However, there is much controversy in the literature as to whether preparticipation screening should be conducted on young athlet ...
... regions of Italy that are well known for congenital cardiac complications have screened young athletes since the late 1970’s to further reduce the rate of mortality [10]. However, there is much controversy in the literature as to whether preparticipation screening should be conducted on young athlet ...
Alterations in Left Ventricular Structure and Function in Young
... incidence has been increasing markedly in both men and women in recent years (1). Obesity is an independent risk factor for the development of heart failure (HF), even after accounting for other co-morbid conditions that cluster with it, such as diabetes and hypertension. For reasons that are not co ...
... incidence has been increasing markedly in both men and women in recent years (1). Obesity is an independent risk factor for the development of heart failure (HF), even after accounting for other co-morbid conditions that cluster with it, such as diabetes and hypertension. For reasons that are not co ...
T Pulmonary hypertension and pulmonary arterial hypertension: a clarification is needed EDITORIAL
... between the echocardiographic estimate and the haemodynamic assessment of Ppa, the large confidence intervals may prevent a reliable comparison in the individual patient [10]. Accordingly, the evaluation of PH by Doppler echocardiography may expose to risks of both false-negative and, in particular, ...
... between the echocardiographic estimate and the haemodynamic assessment of Ppa, the large confidence intervals may prevent a reliable comparison in the individual patient [10]. Accordingly, the evaluation of PH by Doppler echocardiography may expose to risks of both false-negative and, in particular, ...
Value of Ventricular Stiffness Index and Ventriculoarterial Interaction
... Key Words: Dilated cardiomyopathy; Ventricular elastance; Ventriculoarterial interaction ...
... Key Words: Dilated cardiomyopathy; Ventricular elastance; Ventriculoarterial interaction ...
Right ventricular function in patients with pulmonary hypertension
... (MPI) has been proposed6 – 8 for the evaluation of combined systolic and diastolic ventricular function. This index that can be measured by both pulsed-wave Doppler and tissue Doppler imaging (TDI), has been proved to correlate well with invasive procedures such as catheterization,9 to reflect disea ...
... (MPI) has been proposed6 – 8 for the evaluation of combined systolic and diastolic ventricular function. This index that can be measured by both pulsed-wave Doppler and tissue Doppler imaging (TDI), has been proved to correlate well with invasive procedures such as catheterization,9 to reflect disea ...
Human Heart Weight at High Altitude
... of high altitude (12,300 feet) residents in Peru and in 86 hearts from sea level in the continental United States revealed that right ventricular hypertrophy is no greater at high altitude than at sea level in the stillborn-newborn infant heart. Right ventricular weight relative to total heart weigh ...
... of high altitude (12,300 feet) residents in Peru and in 86 hearts from sea level in the continental United States revealed that right ventricular hypertrophy is no greater at high altitude than at sea level in the stillborn-newborn infant heart. Right ventricular weight relative to total heart weigh ...
Macroscopic and Microscopic Studies on Moderator Bands in
... Abstract: The wall of the ventricle bears septomarginal trabeculae (moderator band) which extend from the interventricular septum to the opposite wall. These are partly muscular and partly tendinous and vary in different subjects. For study of the moderator band, 12 hearts of the ostrich were collec ...
... Abstract: The wall of the ventricle bears septomarginal trabeculae (moderator band) which extend from the interventricular septum to the opposite wall. These are partly muscular and partly tendinous and vary in different subjects. For study of the moderator band, 12 hearts of the ostrich were collec ...
Prognosis of Patients with Acute Pulmonary After Acute
... The patients in group A were remarkable in that they had unexpectedly normal or only mildly depressed ,ejection fractions (0.55 ± 0.06). This was in contrast to the study by Schelbert et al.,14 which showed that patients who had manifested overt pulmonary edema in the course of acute myocardial infa ...
... The patients in group A were remarkable in that they had unexpectedly normal or only mildly depressed ,ejection fractions (0.55 ± 0.06). This was in contrast to the study by Schelbert et al.,14 which showed that patients who had manifested overt pulmonary edema in the course of acute myocardial infa ...
fcfcomment_s9s3 Part..
... apparatus is to keep the valves from prolapsing into the atria when they close. The subvalvular apparatus have no effect on the opening and closure of the valves, however. This is caused entirely by the pressure gradient across the valve. The closure of the AV valves is heard as the first heart soun ...
... apparatus is to keep the valves from prolapsing into the atria when they close. The subvalvular apparatus have no effect on the opening and closure of the valves, however. This is caused entirely by the pressure gradient across the valve. The closure of the AV valves is heard as the first heart soun ...
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.