[Magnesium, potassium and sodium in serum and erythrocytes in acute myocardial infarction].

Serum concentration and erythrocyte contents of Mg++, K+ and Na+ was measured on day 1, 3 and 14 in patients with transmural myocardial infarction. The study group consisted of 72 patients (15 females and 57 males) with the diagnosis of myocardial infarction based on WHO criteria. The control group consisted of 52 healthy subjects (11 females and 41 males). Measurements of sodium and potassium were made using flame photometer, magnesium was measured with atom adsorption spectrophotometry. Lowest magnesium and potassium concentrations (in serum and in erythrocytes) were found on day 1 and day 3 with almost full normalization on day 14. Sodium serum concentration and erythrocyte contents varied; lowest serum concentration appeared on day 1 and day 3, erythrocyte contents was highest on day 1.