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Study Shows Bartonella Causes Endocarditis

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 Editor’s Note: Endocarditis has typically been thought to be caused by Borrelia in Lyme disease; this study reveals that Bartonella may also cause cardiac complications

Bartonella henselae Infective Endocarditis Detected by a Prolonged Blood Culture
 
Abstract
 
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.
 
Source: Mito T, Hirota Y, Suzuki S, Noda K, Uehara T, Ohira Y, Ikusaka M.Bartonella henselae Infective Endocarditis Detected by a Prolonged Blood Culture.
Intern Med. 2016;55(20):3065-3067. Epub 2016 Oct 15.

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