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Mitral valve rupture secondary to ischemic papillary muscle necrosis is rare in the contemporary era due to improved revascularization techniques. However, when it does occur, prompt diagnosis and urgent surgical intervention can be lifesaving. A 69-year-old male with morbid obesity, hypothyroidism, and a family history of coronary artery disease presented to the hospital with chest pain and dyspnea that began five hours prior. He had an acute infero-postero-lateral myocardial infarction due to total occlusion of the left circumflex artery that was revascularized with the deployment of a drug-eluting stent. Two days after the myocardial infarction, the patient had an episode of ventricular tachycardia. He subsequently went into respiratory distress from flash pulmonary edema and developed cardiogenic shock due to acute mitral valve rupture. The patient underwent surgical mitral valve replacement, extracorporeal membranous oxygenation (ECMO), and hemodialysis. His course was complicated by an acute lower gastrointestinal bleed that progressed into multiorgan failure and eventually his demise. This case highlights the need to include papillary muscle rupture high on the differential when evaluating a hemodynamically unstable patient in the setting of an acute myocardial infarction (MI). Rapid diagnosis by urgent bedside echocardiogram and surgical intervention is crucial.

Acute Severe Mitral Regurgitation Secondary to Ischemic Papillary Muscle Rupture: A Case Report