RESUMO
This study included sixty patients with coronary artery disease, thirty patients with acute myocardial infarction [AMI] and thirty patients with myocardial ischemia in whom any diseases known to affect serum electrolytes or parathyroid hormone[PTH] were excluded. Besides, twenty age and sex matched healthy controls were included in the study. All patients and controls were subjected to complete clinical examination and investigations including ECG, echocardiography, blood urea and serum creatinine, liver functions, blood gas analysis, serum sodium, potassium, magnesium, calcium and serum PTH. It was found that serum potassium was significantly lower in six patients with AMI and in one patient with myocardial ischemia compared with the controls. Also, serum magnesium was significantly decreased in ten patients with AMI and nine patients with myocardial ischemia compared with the controls. The results were disccused