A contrast echocardiographic technique using peripheral vein injections for the detection and localization of intracardiac right-to-left shunting is described. Fifty children underwent cardiac catheterization and peripheral contrast echocardiographic studies. The site, degree, and direction of shunting were established at catheterization by oximetry, indicator dilution analysis and/or angiograp...

background : we report experimental myocardial infarction by occluding coronary arteries in ovine models. methods: twelve ewes were included in the study. after the chest was opened by left lateral thoracotomy incision, the second diagonal branch of the left anterior descending coronary artery was ligated at a point approximately 40% distant from its base. prophylactic antiarrhythmics were admi...

Echocardiographic data from 92 younger normal subjects (1 month to 23 years of age) and 136 older normal subjects (20-97 years of age) were pooled and analyzed to obtain prediction equations for normal echocardiographic values. Using a bivariate regression model with the assumption that variability is constant as a percentage of the expected value, we developed regression equation and graphs th...

were assessed by echocardiographic recordings in 51 studies conducted on 37 patients with hypertrophic subaortic stenosis. The incidence and severity of echocardiographic findings in 19 patients treated with propranolol and in 18 not so treated showed no significant differences. Likewise these findings were unaltered by administration of propranolol in 12 patients who were studied both while th...

The systematic evaluation of different transthoracic echocardiographic (TTE) methods to determine cardiac output (CO) and the effect of changes in intravascular volume on echocardiographically determined indexes of cardiovascular structure in the rat has not been documented. With the use of 11 Wistar rats, simultaneous echocardiographic and thermodilution measurements of CO were compared at bas...

BACKGROUND The classification of pulmonary stenosis (PS) severity based on the transpulmonary pressure gradient, which is affected by flow rate. CASE REPORT We report the first case of a pregnant patient with atrial septal defect (ASD) and pulmonary stenosis that was misclassified by conventional echocardiographic methods. Most importantly, three-dimensional transoesophageal echocardiographic...

Twenty six perinatally acquired HAART naive HIV positive children asymptomatic for cardiac disease in age group of 1-9 years were evaluated for cardiac abnormalities by echocardiography. All children were classified according to the revised CDC classification for HIV infection in children. 20 (76.9 percent) patients had evidence of cardiac abnormalities on echocardiography. 18 (69.2 percent) pa...

Background: Mechanical occlusion of the Left atrial appendage (LAA) using a purpose-built device has emerged as an effective prophylactic treatment in patients with atrial fibrillation at risk of stroke and a contraindication for anticoagulation. A crucial step in procedural planning is the choice of the device size. This is currently based on the manual analysis of the “Device Landing Zone” fr...