A Rare Case of Anterior Papillary Muscle Rupture Following Acute Non-ST Elevation Myocardial Infarction.

Sudden hemodynamic deterioration after myocardial infarction should prompt immediate evaluation for papillary muscle rupture, even in the absence of a murmur or large-vessel occlusion. Acute severe mitral regurgitation from papillary muscle rupture may mimic recurrent ischemia, and early echocardiography with prompt surgical intervention can be lifesaving.