[Angiographic studies on regional contraction behavior of the left ventricle in the acute phase of myocardial infarction].

Quantitative angiocardiographic examinations concerning the regional contraction of the left ventricle in 16 patients with acute myocardial infarction were performed. In comparison to a control group of 6 healthy male patients the determination of the speed of the medium regional shortening (MVRF) of 12 different ventricle segments resulted in typical findings deviating from the normal. On the second day after beginning of the infarction in the area of the myocardium affected by an acute infarction there existed as a rule severe hypokinetic and akinetic disturbances of the contraction (13 times), only in three cases slight paradoxical movements of the ventricular wall (dyskinesias) could be observed. The average speed of shortening of all segments together (MVRF) excellently represents the momentary global function of the ventricle. It comprises in the same way acutely and chronicly disturbed areas as well as also the function of regions of the myocardium which are not disturbed. MV/RF and systolic ejection fraction (SEF) show statistically a highly significant correlation of r = 0,797 (p less than 0.001). On the basis of the findings got considerations are performed concerning a proved differential therapy in the acute stage of the myocardial infarction.