[Surgery to Triple Valves for Active Infective Endocarditis Caused by Abiotrophia defectiva:Report of a Case].

We experienced a case of infective endocarditis caused by Abiotrophia defectiva in which aortic, mitral, and tricuspid valve surgery was performed. Even if blood cultures are negative, it is important to treat patients with endocarditis considering the possibility that some organisms are difficult to detect via conventional blood culture. Embolism is a complication that should not be overlooked in cases of infective endocarditis, particularly those caused by Abiotrophia defectiva, which tends to cause embolism. As the patient had splenic and cerebral infarction preoperatively, early surgical intervention was performed to prevent further embolisms, and the patient's postoperative course was excellent.