What are the mechanical complications of acute myocardial infarction?

What are the mechanical complications of acute myocardial infarction?

Typical mechanical complications of acute myocardial infarction are rupture of papillary muscle, rupture of interventricular septum and rupture of left ventricular free wall. Mechanical complications are more life threatening and seldom respond to medical management. They need early high risk surgery. Rupture of papillary muscle causes severe acute mitral regurgitation and pulmonary edema. Rupture of interventricular septum produces an acquired ventricular septal defect and leads to severe heart failure. Rupture of ventricular free wall causes hemopericardium and cardiac tamponade.