The activity of blood plasma renin and the content of aldosterone were studied in dynamics in 55 patients with acute myocardial infarction following a different course. The dependence of renin activity and potassium content is analysed. The authors did not find any dependence between the degree of growth of blood plasma renin activity and the course of the disease; exception to this were patients with disorders of rhythm and conductivity. It is presumed that changes in potassium metabolism play an important role in the changes in renin activity in myocardial infarction.
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