Pediatric Dosage of Amoxicillin-Clavulanate for Pressure Sore Infection
For pediatric pressure sore infections, use amoxicillin-clavulanate at 45 mg/kg/day (amoxicillin component) divided every 12 hours, or 40 mg/kg/day divided every 8 hours for children ≥3 months of age. 1
Dosing Algorithm
Age-Based Dosing
Neonates and infants <3 months:
- 30 mg/kg/day (amoxicillin component) divided every 12 hours 1
- Use the 125 mg/5 mL oral suspension formulation 1
Children ≥3 months and weighing <40 kg:
- Standard dosing: 25 mg/kg/day divided every 12 hours OR 20 mg/kg/day divided every 8 hours 1
- For more severe infections (recommended for pressure sores): 45 mg/kg/day divided every 12 hours OR 40 mg/kg/day divided every 8 hours 1
- The every 12-hour regimen is preferred as it causes significantly less diarrhea 1
Children ≥40 kg:
- Dose according to adult recommendations: 500 mg/125 mg every 12 hours or 875 mg/125 mg every 12 hours for more severe infections 1
Rationale for Pressure Sore Infections
Pressure sores are polymicrobial skin and soft tissue infections that typically involve both aerobic and anaerobic bacteria, including beta-lactamase-producing organisms. The evidence supports amoxicillin-clavulanate as appropriate coverage for these mixed infections 2, 3. One case report specifically documented successful treatment of a pressure ulcer with actinomycotic involvement using amoxicillin-clavulanate 3.
Formulation Selection
Use either:
- 200 mg/28.5 mg per 5 mL suspension, OR
- 400 mg/57 mg per 5 mL suspension 1
The higher concentration formulations (14:1 ratio) are preferred for most infections and reduce dosing volume 4.
Critical Prescribing Caveats
- Do NOT substitute two 250 mg/125 mg tablets for one 500 mg/125 mg tablet—they contain different amounts of clavulanic acid 1
- Do NOT use the 250 mg/125 mg tablet in children <40 kg 1
- Administer at the start of meals to enhance clavulanate absorption and minimize gastrointestinal side effects 1
- Adjust dosing in renal impairment (GFR <30 mL/min requires dose reduction) 1
Duration of Therapy
While the FDA label doesn't specify duration for pressure sores, skin and soft tissue infections typically require 7-14 days of therapy. The case report of pressure ulcer treatment with actinomycotic involvement used prolonged therapy 3, but standard pressure sore infections without deep tissue involvement should respond to shorter courses with appropriate wound care.