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Canadian Journal of Infectious Diseases and Medical Microbiology
Volume 24 (2013), Issue 3, Pages 155-158
http://dx.doi.org/10.1155/2013/470413
Case Report

Aerococcus viridans Native Valve Endocarditis

Wenwan Zhou, Vanessa Nanci, Andreanne Jean, Amir H Salehi, Fahad Altuwaijri, Renzo Cecere, and Jacques Genest

Cardiovascular Sciences Program, McGill University Health Centre, Montreal, Quebec, Canada

Copyright © 2013 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aerococcus viridans is an infrequent human pathogen and few cases of infective endocarditis have been reported. A case involving a 69-year-old man with colon cancer and hemicolectomy 14 years previously, without recurrence, is reported. A diagnosis of native mitral valve endocarditis was established on the basis of clinical presentation, characteristic echocardiographic findings and pathological specimen examination after urgent valve replacement. A viridans endocarditis appears to be particularly virulent, requiring a surgical approach in four of 10 cases reported and death in one of nine. Given the aggressive nature of A viridans endocarditis and the variable time to diagnosis (a few days to seven months), prompt recognition of symptoms and echocardiography, in addition to blood cultures, should be performed when symptoms persist.