American Heart Association (AHA) | European Society of Cardiology (ESC) (MIC ≤0.125 mcg/mL) | British Society for Antimicrobial Chemotherapy (BSAC) (MIC ≤0.125 mcg/mL) | |
Adult (MIC ≤0.12 mcg/mL) | Pediatric (MIC ≤0.1 mcg/mL) | ||
4-week regimens¶: | 4-week regimens: | 4-week regimensΔ: | 4- to 6-week regimens: |
Aqueous penicillin G 12 to 18 million units per 24 hours IV either continuously or in 4 or 6 divided doses or (if penicillin is unavailable) Ampicillin 2 g IV every 4 hours or Ceftriaxone 2 g per 24 hours IV or IM in 1 dose Beta-lactam-intolerant patients: Vancomycin◊ 30 mg/kg per 24 hours IV in 2 divided doses | Aqueous penicillin G 200,000 to 300,000 units/kg per 24 hours IV in 6 divided doses (maximum dose: 24 million units per 24 hours) or (if penicillin is unavailable) Ampicillin 200 to 300 mg/kg per 24 hours IV divided in 4 or 6 divided doses (maximum dose: 12 g per 24 hours) or Ceftriaxone 100 mg/kg per 24 hours IV§ in 2 divided doses or 80 mg/kg in 1 daily dose (maximum dose: 4 g per 24 hours; if dose is >2 g per 24 hours, use divided dosing every 12 hours) Beta-lactam-intolerant patients: Vancomycin◊ 40 mg/kg per 24 hours IV in 2 or 3 divided doses (maximum dose: 2 g per 24 hours) | Aqueous penicillin G¶ 12 to 18 million units per 24 hours IV in 4 or 6 divided doses or continuous infusion or Amoxicillin 100 to 200 mg/kg per 24 hours IV in 4 to 6 divided doses or Ampicillin 12 g per 24 hours (or 100 to 200 mg/kg per 24 hours) IV in 6 divided doses or Ceftriaxone¶¥ 2 g per 24 hours IV or IM in 1 dose or Vancomycin◊ 30 mg/kg per 24 hours IV in 2 divided doses | Benzylpenicillin‡ 1.2 g every 4 hours IV or Ceftriaxone 2 g per 24 hours IV/IM |
2-week regimens†: | 2-week regimens†: | 2-week regimensΔ†: | 2-week regimens†: |
Either Aqueous penicillin G 12 to 18 million units per 24 hours IV either continuously or in 6 divided doses or Ceftriaxone 2 g per 24 hours IV or IM in 1 dose plus Gentamicin**,¶¶ 3 mg/kg per 24 hours IV or IM in 1 dose (preferred) or in 3 divided doses | Not recommended for children due to lack of data | Either Aqueous penicillin G 12 to 18 million units per 24 hours IV in 4 to 6 divided doses or continuous infusion or Amoxicillin 100 to 200 mg/kg per 24 hours IV in 4 to 6 divided doses or Ampicillin 12 g (or 100 to 200 mg/kg) per 24 hours IV in 6 divided doses or Ceftriaxone¶¥ 2 g per 24 hours IV or IM in 1 dose plus Gentamicin**,ΔΔ 3 mg/kg per 24 hours IV or IM in 1 dose | Either Benzylpenicillin‡ 1.2 g every 4 hours IV or Ceftriaxone 2 g per 24 hours IV or IM plus Gentamicin** 1 mg/kg every 12 hours IV |
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