Abstract
In order to evaluate the left ventricular function in patients with ischemic heart disease, echocardiographic analysis of the mitral valve motion was made during ergometer exercise with minitoring heart rate, blood pressure, ECG and symptom.
The materials consisted of 25 patients with effort angina, 12 patients with myocardial infarction and 15 normal subjects as a control. The graded exercise was performed in supine position on the bed. Echocardiographic paramaters, such as maximal amplitude of the anterior mitral valve leaflet motion (Amplitude), diastolic descent rate (DDR), nitial opening velocity (opening rate) and final closing velocity (peak ds/dt), were measured at rest and after exercise. Peak ds/dt was compared with the change in the left ventricular end-diastolic pressure (LVEDP) and ejection fraction (EF) measured by angiography.
The results were that opening rate and peak ds/dt were decreased after exercise in patients with ischemic heart disease. These paramaters appear to be useful to assess the left ventricular reserve in patients with ischemic heart disease.
