A Case Report on Hypocalcemic Cardiomyopathy: A Rare Cause of Cardiac Failure

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We discuss a case of a 48-year-old man who presented with symptoms of breathlessness, orthopnea, and paroxysmal nocturnal dyspnea. Echocardiogram showed severe left ventricular dysfunction with an ejection fraction of 20% and a coronary angiogram performed later was normal. He was initiated on standard medical management for heart failure. Further blood tests showed that he had severe hypocalcemia secondary to hypoparathyroidism. After the correction of hypoparathyroidism using calcium supplementation and alfacalcidol, his ejection fraction improved to 59%, and 12 weeks later, all anti-failure medications were stopped. A clinical diagnosis of hypocalcemic cardiomyopathy due to hypoparathyroidism was made. The literature review reveals only a few reported cases of heart failure as the initial presentation of dilated cardiomyopathy due to underlying hypocalcemia.

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