QTc prolongation and ventricular premature complexes secondary to insulin-induced hypoglycemia in a diabetic patient

Abstract

Cardiac arrhythmias may be caused by hypoglycemia in diabetic patients, with or without underlying cardiovascular disease. It may be difficult to establish a relationship between hypoglycemia alone and cardiac arrhythmia, especially in elderly diabetic patients, because of the presence of multiple comorbidities. We report a case of an elderly patient with diabetes and established cardiovascular disease, who presented with delirium secondary to severe hypoglycemia along with prolonged QTc interval and ventricular premature beats, which resolved after correction of hypoglycemia.