Prolonged ventricular systole is an indicator of the heart contractile function

Abstract

We examined 68 patients with primary myocardial infarction. The assessment of myocardial contraction fraction was obtained by analysis of QT segment deviation. In healthy patients the deviation of these indices was ±5 %. In patients with myocardial infarction we observed a prolonged systole of the ventricular. Deviations of these indicators amounted to 7 to 42 per cent, depending on severity of acute heart failure, depth and area of necrosis of the heart muscle. The lengthening of the systole reflects a violation of myocardial contractility. Refs 13. Table 1.