Objective(s): Association of adolescent emotional stress (ES) with the incidence of cardiovascular disease (CVD) at older age was investigated. Materials and Methods: 21 female rats were divided into three groups of 7 each; ES, foot-shock, and control. Chronic ES was induced by exposing the rats to witness foot-shock of their neighboring...

breed-wise standard echocardiographic values in dogs have been reported as there is variation in body and chest conformation which limits the application of data of one breed for other breed. labrador retrievers being originated from hunting dogs, might have different echocardiographic values from standard normal range of other dog breeds. so, the present study was aimed to determine the m-mode...

Hyperthyroidism has been reported to affect all of the major determinants of left ventricular performance in a manner that would augment ventricular shortening characteristics. The hypothesis tested in this study is that reduced afterload in conjunction with increased preload and heart rate, rather than augmented contractility, accounts for much of the increase in left ventricular performance n...

BOERTH, ROBERT C., AND JAMES MT. COVELL. Mechanical performance and ejkiency of the leji ventricle during ventricular stimuluhn. Am. J. Physiol. 221(6): 16864691. 1971.-The effects of electrical stimulation of the right atrium and right ventricular outflow tract on left ventricular performance and efficiency were compared in dogs in the isovolumic left ventricle in which end-diastolic volume wa...

It has been proposed that ultrasowmd estimation of left ventricular volume, ejection fraction, and the mean rate of circumferential fibre shortening (mean VCF) may be inaccurate in patients with abnormalities of left ventricular wall motion. Accordingly, we measured left ventricular dimensions by echocardiography in 36 patients undergoing biplane left ventricular cineangiography, 21 ofwhom had ...

Children with congenital aortic stenosis have "excessive" left ventricular hypertrophy with reduced resting systolic wall stress that allows for supernormal ejection performance. If aortic stenosis is uncorrected, this pattern persists until adulthood. The effect of removing the aortic pressure gradient on left ventricular hypertrophy and wall stress in children with congenital aortic stenosis ...

A neonatal patient with Wolff-Parkinson-White type A and supraventricular tachycardia is described. Demonstration of the mechanism of the tachycardia and its termination were achieved using intracardiac electrography and cardiac pacing. Quantitative left ventricular angiography and echocardiography showed impaired left ventricular function following the arrhythmia. Serial echocardiograms demons...