BACKGROUND Increased mortality in patients with chronic pulmonary hypertension has been associated with elevated right atrial (RA) pressure. However, little is known about the effects of chronic right ventricular (RV) pressure overload on RA and RV dynamics or the adaptive response of the right atrium to maintain RV filling. METHODS AND RESULTS In 7 dogs, RA and RV pressure and volume (conduc...

Background In pulmonary arterial hypertension (PAH), increased vascular resistance causes functional and structural changes in the right ventricle (RV), ultimately leading to right heart failure and death. Predictors of patient survival include RV cardiac index (RVCI) and pulmonary vascular resistance (PVR). First-pass contrast bolus hemodynamics, such as cardiopulmonary transit time (PTT), ful...

Double-chambered right ventricle (DCRV) is a rare congenital heart disorder involving 2 different right ventricle (RV) pressure compartments that is often associated with ventricular septal defect (VSD). Usually, the obstruction is caused by an anomalous muscle bundle crossing the RV from the interventricular septum to the RV free wall. We are reporting a case of double-chambered right ventricl...

A cardiac MRI was performed and demonstrated the classical imaging findings of ARVC. The right ventricle was dilated, the apex and right ventricular (RV) outflow tract were dyskinetic and there was an aneurysmal segment in the basal inferior wall of the right ventricle. Abnormal gadolinium contrast enhancement was seen at the RV apex and also in the left ventricle reflecting disease severity an...

Background Chagas’ Cardiomyopathy (CC) is an important cause of heart failure and sudden cardiac death (SCD) in Latin America. Migratory movements have spread carriers throughout the world, especially in USA and Europe. Left Ventricle (LV) involvement is a landmark and apical aneurysm a pathognomical sign. Nevertheless, early involvement of the right ventricle (RV) and RV systolic dysfunction i...

OBJECTIVE To investigate the effects of endotoxin infusion on right ventricular (RV) systolic function and mechanical efficiency. METHODS Six anesthetized pigs (Endo group) received a 0.5 mg/kg endotoxin infusion over 30 min and were compared with six other anesthetized pigs (Control group) receiving placebo for 5 h. RV pressure-volume (PV) loops were obtained by the conductance catheter tech...

SEE PAGE 642 T he pressure overload of pulmonary arterial hypertension (PAH) predisposes the right ventricle (RV) to hypertrophy, dilation, and reduced pump function. Alterations in RV functional indexes such as tricuspid annular plane excursion, fractional area change, and tissue Doppler myocardial velocity have been shown to have prognostic significance in PAH (1). With the advent of strain a...

The most common presentation of arrhythmogenic right ventricular cardiomyopathy (ARVC) is palpitations or ventricular tachycardia (VT) of left bundle branch morphology in a young or middle-aged individual. The 12-lead electrocardiogram may be normal or have T-wave inversion beyond V(1) in an otherwise healthy person who is suspected of having ARVC. The most frequent imaging abnormalities are an...

An 82-year-old woman presented with recurrent syncope. Clinically, she had a slow rising pulse, right parasternal heave, and an ejection systolic murmur loudest at the right sternal edge with a quiet pansystolic murmur at the apex. ECG demonstrated prolonged PR interval and extreme leftward axis. Transthoracic and transesophageal echocardiography revealed atrioventricular and ventriculoarterial...

Abstract Background: Early diagnosis of right ventricle (RV) involvement in inferior myocardial infarction (Inf MI) is very critical. This study was performed to evaluate the clinical findings of Inf MI with or without RV infarction. Methods: From September 2010 to September 2012, 195 patients with definite diagnosis of Inf MI were evaluated in the Department of Cardiology, in Babol, north of...