[Diagnosis of acute & subacute bacterial endocarditis; study of 183 cases of which 143 were confirmed anatomopathologically].
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A 41-year-old man being treated with methotrexate for psoriasis underwent aortic valve replacement. He subsequently developed fulminating bacterial endocarditis. Bacterial endocarditis occurs in 1-2% of cases after prosthetic valve replacement and has a high mortality. The long-term use of methotrexate and similar drugs is increasing in conditions such as psoriasis, rheumatoid arthritis and inflammatory bowel disease. Thus, more patients undergoing heart valve surgery will be taking these preparations for coexisting disease. As methotrexate increases the risk of infection, its perioperative use in these patients requires further evaluation.
A patient with hypertrophic obstructive cardiomyopathy (HOCM) and Staphylococcus aureus mitral valve endocarditis is reported. Bacterial endocarditis occurs with increased frequency and the prognosis is worse in these patients. All patients with HOCM should therefore be given antibiotic treatment every time they undergo invasive procedures to prevent potentially fatal bacteraemia.
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