[Comparative evaluation of the changes in MB CPK activity and indices of precordial mapping].

Twenty patients with acute myocardial infarction were investigated, with simultaneous peripheral blood MV CPK activity measurement and precordial charting. Extreme values of precordial charting compared to those of MV CPK activity peaks as well as the duration of increased MV CPK activity showed that extreme precordial charting values can be detected 6-9 hours later than peaks of MV CPK activity. Necrosis weights estimated on the basis of MV CPK activity and precordial charting parameters showed close correlation. The results obtained suggest that MV CPK activity measurement is a more accurate method of assessing the spread of necrotic zone, whereas precordial charting provides a more accurate estimation of necrosis weight.