Ventricular Fibrillation Resulting from Acute Right Ventricular Infarction from Isolated Occlusion of a Right Ventricular Branch Artery

Malignant ventricular arrhythmias can result from isolated right ventricular infarction, and reports of this phenomenon in the literature are rare. We present a case of a 46-year-old man with acute onset of chest pain angiographically confirmed to be a result of isolated occlusion of a right ventricular branch artery. He developed ventricular fibrillation within 5 hours of symptom onset. This case highlights the point that despite its benign clinical appearance and preserved left ventricular function, necrosis of right ventricular tissue can have life-threaten-ing consequences. Key Words: myocardial infarction, right ventricle, ventricular tachycardia, ventricular fibrillation. Right ventricular infarction occurs most commonly in the setting of inferior myocardial infarction (1), and as an isolated entity is rare (2). Despite its benign clini-cal appearance and preserved left ventricular function, necrosis of right ventricular tissue can have life-threatening consequences