Infective Endocarditis Caused by Abiotrophia Defectiva: A Case Report

Y. Kadri MD¹, M. Hassine MD^2, , C. Echahed MD¹, C. Chaouch MD³, M.Boussaada MD², H. Ben Abdallah MD¹, N. Boujaafer MD², H. Gamra MD² and M. Mastouri MD¹

¹Microbiology Laboratory, Fattouma Bourguiba University Hospital, Monastir, Tunisia

²Cardiology A Department, Fattouma Bourguiba University Hospital, Cardiothrombosis Research Laboratory, University of Monastir, Monastir, Tunisia

³Microbiology Laboratory, Sahloul University Hospital, Sousse, Tunisia

Cite this paper:
Y. Kadri MD, M. Hassine MD, C. Echahed MD, C. Chaouch MD, M.Boussaada MD, H. Ben Abdallah MD, N. Boujaafer MD, H. Gamra MD and M. Mastouri MD. Infective Endocarditis Caused by Abiotrophia Defectiva: A Case Report. American Journal of Medical Case Reports. 2015; 3(7):187-190. doi: 10.12691/ajmcr-3-7-1

Abstract

Although relatively rare, infective endocarditis (IE) remains a severe disease that is associated with substantial morbidity and mortality especially in case of endocarditis caused by virulent microorganisms on valves in the left side. Appropriate antibiotic therapy is the most important component in the treatment of patients with IE. We report the case of a 67 year-old woman who was admitted for a native left sided IE. Transesophageal echocardiography (TEE) showed mitral valve vegetation with a moderate mitral regurgitation. Hemocultures were promptly positive but the identification of the germ needed an automated phenotypic system that isolated Abiotrophia defectiva, which is an exceptional entity. Despite the initiation of an appropriate antibiotic therapy, the patient experienced embolic episodes that prompted the decision for a surgical treatment.

Keywords:
infective endocarditis vegetations microorganisms Abiotrophia defectiva

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