[Evaluation of the condition of the peri-infarct zone in acute myocardial infarct according to 35 precordial leads].

The condition of the peri-infarction and the necrotic zones was assessed by cartographic analysis of ECG recorded from 35 precordial leads. During a 4-week follow-up functional mobility of indices characterising the prenecrotic zone and the stability of the zone of necrosis was noted. The indices sigma ST (overall index of ST segment elevation), AST (area of ST segment elevation), and AQS (area of QS recording), as well as the AST/AQS ratio possess definite prognostic significance: the lower the value of sigma ST, AST, and AQS and AQS and the greater the AST/AQS coefficient, the more favourable is the prognosis in myocardial infarction.