Mito Tsutomu, Hirota Yusuke, Suzuki Shingo, Noda Kazutaka, Uehara Takanori, Ohira Yoshiyuki, Ikusaka Masatomi
Department of General Medicine, Chiba University Hospital, Japan.
Intern Med. 2016;55(20):3065-3067. doi: 10.2169/internalmedicine.55.7006. Epub 2016 Oct 15.
A 65-year-old Japanese man was admitted with a 4-month history of fatigue and exertional dyspnea. Transthoracic echocardiography revealed a vegetation on the aortic valve and severe aortic regurgitation. Accordingly, infective endocarditis and heart failure were diagnosed. Although a blood culture was negative on day 7 after admission, a prolonged blood culture with subculture was performed according to the patient's history of contact with cats. Consequently, Bartonella henselae was isolated. Bartonella species are fastidious bacteria that cause blood culture-negative infective endocarditis. This case demonstrates that B. henselae may be detected by prolonged incubation of blood cultures.
一名65岁的日本男性因疲劳和劳力性呼吸困难4个月入院。经胸超声心动图显示主动脉瓣有赘生物及严重主动脉反流。据此，诊断为感染性心内膜炎和心力衰竭。虽然入院后第7天血培养阴性，但根据患者与猫接触史进行了延长时间的血培养及传代培养。结果，分离出汉塞巴尔通体。巴尔通体属细菌是引起血培养阴性感染性心内膜炎的苛养菌。该病例表明，延长血培养孵育时间可能检测到汉塞巴尔通体。
