The effects of mechanical ventilation with PEEP were investigated in five patients with normal cardiopulmonary function (group A) and in 11 patients with severe left ventricular failure (group B). Cross-sectional area of the right and left atrium (RA/LA), left ventricle (LV), and right ventricle (RV) was determined at EDA/ESA using transesophageal echocardiography. Hemodynamic parameters and tr...

BACKGROUND While volume derived global indices of right ventricle (RV) function are frequently abnormal after the Mustard procedure, the mechanism for these abnormalities is poorly understood. RV muscle fibres are predominantly arranged longitudinally and thus indices derived in the long axis may better describe RV function. METHODS 20 survivors of the Mustard operation were studied (age 7.8-...

Background Repaired Tetralogy of Fallot (rTOF) is currently monitored with Cardiovascular MR (CMR) to measure right ventricle (RV) volumes and function. However, these indices do not always reflect performance status or predict success following repair of pulmonary insufficiency. RV kinetic energy (KERV) may provide a more robust measure of RV efficiency than RV end diastolic volume (EDV) index...

the present study examined the antioxidant defense of glutamine on plasma and liver antioxidant status in broilers under phs with respect to changes in the levels of lipid peroxidation marker malondialdehyde (mda), total antioxidant status (tas) and the activities of anti peroxidative enzymes [superoxide dismutase (sod) and glutathione dependent antioxidant enzymes glutathione peroxidase (gpx)]...

OBJECTIVE Left-ventricular assist device (LVAD) implantation complicated by early right ventricle (RV) failure has a poor prognosis. This study details our center's experience with veno-arterial extracorporeal membrane oxygenation (ECMO) as perioperative RV support in patients with preoperative biventricular failure undergoing LVAD implantation. METHODS Ten patients, who underwent LVAD implan...

Sathish, V., A. Xu, M. Karmazyn, S. M. Sims, and N. Narayanan. Mechanistic basis of differences in Ca -handling properties of sarcoplasmic reticulum in right and left ventricles of normal rat myocardium. Am J Physiol Heart Circ Physiol 291: H88–H96, 2006. First published February 3, 2006; doi:10.1152/ajpheart.01372.2005.—This study investigated Ca -cycling properties of sarcoplasmic reticulum (...

Background Presently there is no method of evaluating right ventricle function that simultaneously accounts for its complex geometry and motion. RV strain imaging is promising for evaluating regional dysfunction but to date it has not been possible to assess all 3 dimensions in a single acquisition. A novel variant of SPAMM tagging combined with optical flow tracking is available at our institu...

introduction: nicotinamide adenine dinucleotide phosphate (nadph) oxidase-2 (nox2) is one of the predominant sources of ros production during myocardial ischemia-reperfusion and can be induced by angiotensin ii. the evidence suggests that pharmacological blockers of renin-angiotensin system can exert direct tissue effects independent of their ability to regulate blood pressure. the mechanism(s)...

TAYLOR, ROGER R., JAMES W. COVELL, EDMUND H. SONNENBLICK, AND JOHN Ross, JR. Dependence of ventricular distensibility on jilling of the opposite ventricle. Am. J. Physiol. 2 13 (3) : 7 1 l-7 18. 1967.-The influence of filling one ventricle on distensibility of the opposite ventricle was examined in dogs. Distensibility of the left or right ventricle was consistently decreased in proportion to t...