Abstract

Aerococcus viridans is a gram-positive, catalase and oxidase-negative, microaerophilic and motionless coccus. In this paper presented, a-72-year-old male patient with chronic renal insufficiency and diabetes mellitus was evaluated in our clinic for high fever persisted for 3 days while being followed for ischemic cerebrovascular event. Transesophageal echocardiographic (TEE) examination revealed vegetation on mitral valve. Gram-positive cocci were seen on Gram staining, which was performed based on growth on three blood culture mediums of BACTEC 9240 system (Becton-Dickinson, Maryland, ABD). BBL Cyrstal Gram-positive identification Kit (BD) was used for biochemical identification and the bacteria was defined as A.viridans. According to antibiotic susceptibility test, the bacterium was susceptible to chloramphenicol and vancomycine but resistant against ampicillin, cefepim, clindamycin, and penicillin. Herein, a case with infective endocarditis caused by multidrug-resistant A. viridans was presented as the first report from Turkey.

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