[Functional reserve of the ischemic left ventricle with XXXX to afterload stress: digital subtraction angiographic assessments].

@entity1 @entity7202 @entity712 @entity439 @entity951 @entity1540 @entity583
Digital subtraction angiography (DSA) has been confirmed to be an accurate method for determining left ventricular function. It is a relatively non-invasive technique without inducing @entity1540 . The response of left ventricular function to afterload stress was assessed using DSA for eight @entity1 with old anterior @entity583 and @entity439 including that of the anterior wall (averaging 30.3 months after the acute episodes). Their ages ranged from 36 to 65 years and one @entity1 was a @entity1 . Prior to the investigation, we confirmed that a single DSA procedure did not alter left ventricular function in a pilot study of one @entity1 (No. 8). After initial DSA in the basal state, @entity7202 was infused intravenously (1 to 2 mg/min). When aortic systolic blood pressure increased by 30 to 50 mmHg, a second DSA was performed for each @entity1 . Left ventricular volumes and ejection fractions were calculated by the area-length method, and regional wall motion was assessed by the visual method according to the AHA classification and the curvature radius of the @entity439 was calculated. @entity7202 induced neither @entity712 nor @entity951 in the present series. The heart rates decreased, and there were a significant increase in end-systolic volumes (p less than 0.05), end-systolic radii (p less than 0.05), and a significant decrease in ejection fractions (p less than 0.02) after @entity7202 infusion. In 32 of 40 segments, regional wall motion was unchanged by @entity7202 as assessed by the visual method; whereas, in the other eight, there was a deterioration.(ABSTRACT TRUNCATED AT 250 WORDS)
