Frequency Ratio Approach to Estimation of Prognostic Value of Early Exercise Test in Acute Ccoronary Syndrom Patients

Abstract

During 11 years period submaximal exercise testing within 3 weeks of acute myocardial infarction was performed with 894patients. Exercise induced ST segment depression appears to have prognostic significance of subsequent development of fatalcoronary events at 6, 12, 24 months and 11 years post infarction. At fillow-up at 2 years post infarction in the non survivors group therewere only 45.2 percent exercise induced ST segment depression. This shows, that prognostic importance of ST depression isinsufficient and demands of research of more consistent signs. The cardiovascular response to exercise was interpretate as transistingprocess of the selfregulation of cardiovascular system , and the new predictive signs were found on the basis of heart rate and systolicblood pressure curves during the exercise and after it . The prognostic value of these sigcns were established .The combined use boththe new predictive signs and the usual data of early exercisetest shows the high predictive possibility of test – the early cardiac deathwas predicted in 80 percent cases. Ill. 2, bibl. 5 (in English; summaries in Lithuanian, English and Russian).