A Case of Redo Operation for Prosthetic Valve Endocarditis with Acute Myocardial Infarction after Aortic Valve Replacement Using a Freestyle Stentless Valve

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  • Ｆｒｅｅｓｔｙｌｅ弁による大動脈弁置換術後の人工弁感染性心内膜炎に心筋梗塞をくり返し発症した１例

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A 68-year-old woman received aortic valve replacement (AVR) with a Freestyle stentless valve using a subcoronary technique for aortic stenosis and regurgitation in September 2000. She complained of chest pain, had low grade fever and findings of inflammation and was admitted to our hospital with a diagnosis of acute myocardial infarction in December 2000. She suffered from repetitive or recurrent myocardial infarction. Transesophageal echocardiogram revealed no abnormal findings of the Freestyle stentless valve, but her blood culture was positive for methicillin-resistant coagulase negative Staphylococcus aureus (MRCNS) and she underwent an emergency operation. The Freestyle stentless valve was removed and replaced with a mechanical valve. The patient's intraoperative tissue grew MRCNS and parenteral antibiotics were administered for 8 weeks after surgery. Her condition was complicated with multiple cerebral infarction, however she was discharged on the 113th postoperative day and is doing well without recurrence of infection 12 months after the operation.

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