BIOCHEMICAL AND ELECTROPHYSIOLOGICAL CONTROL OF ISCHEMIC MYOCARDIAL DAMAGE WHILE AORTOCORONARY SHUNTING

Abstract

Based on the data of 146 observations, the authors studied diagnostic and prognostic value of changes in intraventricular conduction and troponin I level in diagnosing the perioperative ischemic myocardial damage when carrying out aortocoronary shunting. Among the patients undergone the operation on the functioning heart the troponin I level turned out to be lower than in the group of patients operated under the conditions of the artificial circulation. When there was no ischemic injury the time of the intraventricular conduction during postoperative period did not change and was independent of shunting conditions. Transient perioperative myocardial ischemia was registered towards the patients operated under the conditions of the artificial circulation two times more often. The troponin I level and its dynamics under perioperative myocardial infarction were independent of the intervention conditions, and the persistent increase in the time of the intraventricular conduction confirmed irreversible ischemic myocardial damage.