Group B Streptococcal Myocarditis
نویسندگان
چکیده
Bacterial myocarditis is an uncommon form of infectious myocarditis. The definitive diagnosis requires histopathology with evidence of bacterial invasion. We report a case of group B streptococcal myocarditis secondary to septicaemia with complete atrioventricular (AV) block and new left bundle branch block. The histopathology revealed patchy small foci of myocyte necrosis. The necrotic areas contained mixed inflammatory cell infiltration with a predominance of neutrophils. Necrosis in AV node was also observed. Gram stain in the necrotic area showed clusters of gram positive cocci in agreement with the results of haemoculture. Bacterial myocarditis is a devastating complication of bacteraemia. This case highlights the ability of group B streptococci to cause life-threatening infections in adults without clear predisposing factors to serious infection. Bacterial myocarditis may progress quickly and be associated with a fatal outcome.
منابع مشابه
Induction of myocarditis and valvulitis in lewis rats by different epitopes of cardiac myosin and its implications in rheumatic carditis.
Immune responses against cardiac myosin and group A streptococcal M protein have been implicated in the pathogenesis of rheumatic heart disease. Although cardiac myosin is known to produce myocarditis in susceptible animals, it has never been investigated for its role in production of valvular heart disease, the most serious sequelae of group A streptococcal infection in acute rheumatic fever. ...
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