Pain Management in Pediatric Patients

Introduction to Pain Management

The American Society of Anesthesiologists, the American College of Intensive Care Medicine, and the National Comprehensive Cancer Network provide guidelines for pain management in pediatric patients, with recommendations for opioid administration and dosing 1, 2, 3

For pediatric patients undergoing wound debridement, the American Society of Anesthesiologists recommends age-based dosing:

Age	Dose
< 3 months	25-50 micrograms/kg every 4-6 hours
3-12 months	50-100 micrograms/kg every 4-6 hours
1-5 years	100-150 micrograms/kg every 4-6 hours
5-18 years	200-300 micrograms/kg (max 10mg) as a single dose adjusted according to response

The oral-to-IV conversion ratio for opioids is 1:3 (divide oral dose by 3 for IV equivalent), as recommended by the European Society for Medical Oncology 4
Local anesthetics for wound infiltration may reduce systemic opioid requirements, according to the American Society of Anesthesiologists 3
The relative potency ratio of oral to subcutaneous morphine is 1:2, and subcutaneous administration can be given as bolus injections every 4 hours or continuous infusion, as reported in the literature 5, 6
The relative potency ratio of oral to IV morphine is 1:3, with IV administration preferred for severe pain requiring urgent relief, as recommended by the American Academy of Hospice and Palliative Medicine and the National Comprehensive Cancer Network 5, 2, 6

The optimal route is oral when possible, as stated by the BMJ guidelines, and oral administration is the first-line approach, while intravenous administration is recommended for patients with poor peripheral circulation 5
Subcutaneous administration is an alternative when IV access is not available, according to the British Medical Journal 5
For patients with severe pain requiring urgent relief, the National Comprehensive Cancer Network recommends IV route over other routes 2
The American College of Intensive Care Medicine recommends a starting dose of 2 mg IV morphine for opioid-naïve adults, which should be titrated to symptom control with no specified upper dose limit 1
The initial titration of morphine should start with a dose of 2.5-5 mg orally every 4 hours, with titration by 25-50% every 24 hours based on pain control and side effects, as recommended by the American College of Physicians and the American Geriatrics Society 5, 7, 8

Efficacy and side effects should be assessed every 60 minutes for oral administration and every 15 minutes for IV administration, as recommended by the Journal of the National Comprehensive Cancer Network guidelines, and there is no upper dose limit, and morphine should be titrated to symptom control, according to the Intensive Care Medicine guidelines 1, 9
The Intensive Care Medicine guidelines recommend bolus doses every 15 minutes as required for breakthrough symptoms, and doubling the infusion rate if a patient receives two bolus doses in an hour 1
The breakthrough dose should be 10-15% of the total daily dose, and if more than four rescue doses are needed per day, the baseline opioid regimen should be adjusted, with the goal of improving pain control and reducing the need for rescue doses, as recommended by the American Pain Society and the American Geriatrics Society 10, 7, 8

The National Comprehensive Cancer Network recommends using morphine with extreme caution in patients with renal impairment, and reducing the dose by 50-75% and extending the dosing interval for patients with severe renal impairment 11
In patients with renal impairment (eGFR <30 mL/min), fentanyl or buprenorphine via transdermal route or intravenously are the safest opioids of choice rather than morphine, which requires significant dose reduction and careful monitoring if used, as recommended by the American College of Oncology and the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines, with a strength of evidence supporting this recommendation 10, 12
Sedation usually resolves within a few days of stable dosing, as reported by the BMJ guidelines, and daytime drowsiness and mental clouding commonly occur at the start of treatment but typically resolve within a few days, according to the BMJ guidelines, and the American Geriatrics Society recommends being aware of potential interactions with other medications commonly used in elderly patients and adjusting the opioid dose accordingly, with a strength of evidence supporting this recommendation 5, 10, 8

Prophylactic laxatives (stimulant laxative with or without stool softener) should always be prescribed to prevent constipation, as recommended by the Journal of the National Comprehensive Cancer Network guidelines and the National Comprehensive Cancer Network, and metoclopramide or antidopaminergic drugs should be prescribed prophylactically for the first few days to manage nausea and vomiting, which usually resolves within 3-5 days 10, 12, 13
Naloxone should be available to reverse accidental overdose, as recommended by the American Academy of Emergency Medicine and the National Comprehensive Cancer Network, with the goal of improving patient safety and reducing the risk of overdose, and constipation prevention should always be prescribed with a prophylactic laxative regimen, and patients should be monitored for adverse effects such as respiratory depression, especially with high doses or parenteral administration, as recommended by the American Geriatrics Society and the National Comprehensive Cancer Network, with a strength of evidence supporting this recommendation 13, 6, 13