Journal Article

Infective Endocarditis Caused by β-Hemolytic Streptococci

Larry M. Baddour

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 26, issue 1, pages 66-71
Published in print January 1998 | ISSN: 1058-4838
Published online January 1998 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/516266
Infective Endocarditis Caused by β-Hemolytic Streptococci

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Infective endocarditis caused by β-hemolytic streptococci is infrequently seen. Members of the Infectious Diseases Society of America's Emerging Infections Network (EIN) were polled for cases of β-hemolytic streptococcal endocarditis that were seen between 1 January 1994 and 31 December 1996. Thirty-one cases were submitted by 22 members. The patients' ages ranged from 4 months to 79 years, and 18 (58.1%) were males. Prosthetic valve infection occurred in six cases and intravenous drug abuse was noted in only one case. Diabetes mellitus was noted in 10 patients (32.3%). Group B b-hemolytic streptococci accounted for over two-thirds of isolates (21 [67.7%] of 31). Twenty-five patients (80.7%) developed complications of infective endocarditis, and 15 (48.4%) underwent surgical intervention with valvular revision or excision. Sixty-one percent (19 of 31) received aqueous crystalline penicillin G either as monotherapy or in combination with gentamicin sulfate. In contrast to previously published data, the mortality rate (12.9%) among patients in this survey was remarkably low. There was no infection relapse documented in 16 of the remaining 27 patients for whom posttreatment follow-up information was available.

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Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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