[Heart failure due to chronic hypoparathyroidism in patient with acute coronary syndrome].

Severe heart failure can be a rare symptom of hypocalcemia. We report a case of a 58 year-old male admitted with a diagnosis of acute coronary syndrome. The ECG showed prolonged QTc interval with severly impared left ventricular ejection fraction recognised in echocardiography. During the hospitalisation hypocalcemia due to primary hypoparathyreoidism was revealed to be the cause of those symptoms.