In a patient with native valve infective endocarditis caused by highly penicillin-susceptible viridans group streptococci, what is the standard recommended duration of monotherapy when treated with intravenous aqueous penicillin G or ceftriaxone?
Answer
4 weeks
Explanation
The lecture lists aqueous crystalline penicillin G or ceftriaxone for **four weeks**, with additional agents and durations also described. These are course-material regimens and should not replace current specialist guidance. **Key takeaway:** IE generally requires prolonged antimicrobial treatment. **Glossary:** IV: intravenous; IM: intramuscular.