What is the recommended Polyethylene Glycol (PEG) dosage per kilogram for an 18-month-old child?

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Polyethylene Glycol (PEG) Dosage for 18-Month-Old Children

The recommended polyethylene glycol (PEG) dosage for an 18-month-old child is 0.78 g/kg/day for maintenance treatment of constipation. 1

Dosing Recommendations for PEG in Young Children

  • For children younger than 18 months with constipation, the effective maintenance dose of PEG 3350 is 0.78 g/kg/day (range: 0.26-1.26 g/kg/day) 1
  • Initial dosing may be slightly higher at approximately 0.88 g/kg/day, with subsequent adjustment based on clinical response 1
  • Studies have shown that PEG relieves constipation in 97.6% of patients under 18 months of age 1
  • For children between 1-2 years, similar dosing has been confirmed effective with a mean effective short-term dose of 1.1 g/kg/day and a mean long-term dose of 0.8 g/kg/day 2

Safety Profile in Young Children

  • PEG 3350 has been demonstrated to be safe and effective specifically in the under 18-month population 1
  • Side effects are generally mild and may include:
    • Transient diarrhea (resolves with dose adjustment) 1, 2
    • Increased gas per rectum 1
  • No significant adverse effects have been reported in clinical studies of PEG use in this age group 1, 2

Administration Considerations

  • PEG should be mixed with water or other appropriate liquids for administration 2
  • Parents should be instructed to adjust the dose to yield 1-2 soft painless stools per day 2
  • PEG is generally well-tolerated and palatable for young children 3
  • Treatment duration varies based on clinical need, with studies showing mean duration of 6.2 months (range: 3 weeks to 21 months) 1

Comparative Efficacy

  • PEG has shown higher success rates (95.3%) compared to other treatments like liquid paraffin (87.2%) in pediatric constipation 4
  • PEG has fewer adverse events compared to liquid paraffin in pediatric populations 4
  • Long-term management with PEG has shown sustained efficacy without loss of effect over time 5

Monitoring and Adjustments

  • Dose should be titrated based on clinical response to achieve 1-2 soft stools daily 2
  • Regular follow-up is recommended to assess efficacy and adjust dosing as needed 2
  • If diarrhea occurs, the dose should be reduced 1, 2

PEG 3350 without electrolytes is a safe, effective, and well-tolerated option for treating constipation in children under 18 months of age, with the optimal maintenance dose being 0.78 g/kg/day.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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