[Pseudoaneurysm of the left ventricle following mitral valve replacement].

This report describes a false aneurysm of atrioventricular groove in the patients who underwent the reoperation of the mitral valve replacement (MVR). Patient 1 underwent reMVR with a SJM prosthesis because of the malfunction of the previous prosthetic valve. A large hematoma was observed in the posterior atrioventricular groove with bleeding at weaning from cardiopulmonary bypass. Ventricular rupture was repaired under the cardioplegic arrest successfully from the epicardial surface with a woven Dacron felt. The postoperative left ventriculogram revealed the false ventricular aneurysm along the atrioventricular groove. Patient 2 underwent reMVR with Carpentier-Edwards prosthesis because of the malfunction of the previous Carpentier-Edwards prosthesis. Cardiopulmonary bypass was discontinued uneventfully, and there were no clinical symptoms suspicious of the formation of the false left ventricular aneurysm. The left ventriculogram at the discharge showed the false left ventricular aneurysm along the atrioventricular groove. Although both patients are in good condition without significant complications, we should involve in the postoperative care of the patients on a regular outpatient basis.