[Importance of correlating catecholamines and acetylcholine in the acute period of complicated and uncomplicated myocardial infarct].

The data obtained by the author testifies to the fact that in various clinical forms of myocardial infarction, there are definite correlations between biologically active substances, reflecting the reactivity of the cholinergic and adrenergic systems. In non-complicated myocardial infarction the predominance of catecholamines is noted, as a rule. In complicated course of the disease with a favourable outcome, the absolute content of the biologically active substances is at maximum and the predominance of catecholamines remains; in some cases, however, the predominance of acetylcholine is observed. In myocardial infarction with a fatal outcome, there is practically no stable predominance of this or that substance with a distinct tendency to the growth of the acetylcholine content and an inadequate change in the content of catecholamines.