Treatment of Streptobacillosis in Infective Endocarditis (Streptobacillus moniliformis)
Streptobacillus moniliformis endocarditis is a rare but serious complication of Streptobacillosis that demands a specific antibiotic approach distinct from uncomplicated disease. This page outlines the clinical scenario and provides access to the structured treatment protocol.
Clinical Scenario
The patient presents with Streptobacillus moniliformis endocarditis — a form of infective endocarditis caused by this organism. This specific presentation requires a more intensive and targeted therapeutic strategy than non-endocarditis Streptobacillosis.
Treatment Approach (Overview)
Management involves dual antibiotic therapy anchored by high-dose penicillin G in combination with an aminoglycoside — the specific agents, dosing strategy, and duration vary based on isolate susceptibility and patient profile.
The complete regimen, dose selection criteria, and treatment duration are available in the full structured protocol.
References
DOI: 10.1128/CMR.00016-06
- Patients with S. moniliformis endocarditis require dual therapy with high-dose penicillin G in combination with streptomycin or gentamicin.
- The currently recommended dose for adults is 4.8 million IU/day (4.8 g) of intramuscular procaine penicillin G if the isolate is susceptible to 0.1 ug/ml.
- If the isolate is more resistant, 20 million IU/day (12 g) of intravenous penicillin G should be used for adults.
- Children should receive 160,000 to 240,000 IU/kg/day (96 to 144 mg/kg/day), up to the adult maximum of 20 million IU/day (12 g).
- Successful treatment of adults with a 4-week regimen has been demonstrated.
- The appropriate treatment length for children is not known, although 6-week regimens generally are considered effective for other causes of bacterial endocarditis.
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