[Physical exertion tolerance in patients with coronary insufficiency in relation to the presence of asynergic areas].

A comparative study of coronarographic, ventriculographic and bicycle ergometry results in 81 coronary patients demonstrated that myocardial contractility disorders (extensive asynergic areas, elevated ultimate diastolic pressure) combined with considerable coronary arterial lesion could result in reduced physical stress tolerance. In cases where one coronary artery is affected, asynergic areas may produce no basic influence on exercise tolerance. The predictive value of summary R amplitude increment at bicycle ergometry was estimated at 70.5% for the diagnosis of asynergia so that it can be used as a sign of possible left-ventricular dysfunction.