Polymorphic ventricular tachycardia due to renal artery stenosis--a case report

Atherosclerotic renal artery disease is common among patients with hypertension over the age 50 years who are resistant to medical treatment. In this case report, the authors present a 55-year-old woman with unilateral renal artery stenosis with a history of cardiac arrest. QT prolongation and evident hypokalemia were the main clinical findings of the patient. The patient also had an episode of polymorphic ventricular tachycardia during hospitalization that degenerated into ventricular fibrillation. After successful balloon dilation of the stenotic renal artery, the patient stayed normotensive and normokalemic without medication, and no arrhythmia was observed during the 6-month follow-up period.