[Aortic Subannular Left Ventricular Pseudoaneurysm with Mitral Valve Regurgitation Due to Infective Endocarditis:Report of a Case].

The patient was a 40-year-old male. His main complaints were fever and heart failure. Methicillin-sensitive Staphylococcus aureus was isolated from the patient's blood culture. He was diagnosed with a left ventricular pseudoaneurysm by contrast-enhanced computed tomography (CT). Severe mitral insufficiency and vegetation on the anterior mitral valve were observed on echocardiography. The patient went into shock and intratracheal intubation was performed. An intraaortic balloon pumping was started, and percutaneous cardiopulmonary support were established for cardiogenic shock. Mitral valve replacement with a mechanical valve and autologous pericardium patch closure were performed in an urgent surgery. Antibiotics were administered until his inflammatory response was negative. The patient had no recurrence of endocarditis or malfunction of the prosthetic valve and no leakage of the patchplasty for two years post-surgery.