Which analgesic regimen is appropriate for postoperative pain management after scoliosis surgery?

• A. Morphine 2 mg IV every 4 hours PRN
• B. Hydromorphone 0.2 mg IV every 4 hours PRN
• C. Acetaminophen 15 mg/kg IV every 4 hours PRN
• D. Ibuprofen 10 mg/kg every 6 hours PRN

Answer: (C)

Multimodal analgesia is the goal after major pediatric spine surgery: use multiple ways to control pain while minimizing opioid use and protecting healing. Intravenous acetaminophen fits this approach well because it provides solid analgesia without the respiratory depressant, sedative, or gastrointestinal side effects associated with opioids. It’s also a non-opioid option that can be given early in the postop period when oral intake isn’t reliable yet, helping to keep pain under control without heavy reliance on opioids.

In the specific context of scoliosis surgery, avoiding NSAIDs right after surgery is often preferred due to theoretical (and some practical) concerns that they might interfere with bone healing and fusion, so relying on acetaminophen as a base analgesic is advantageous. Opioids, while effective, carry higher risks of respiratory depression, nausea, and constipation, making a regimen focused on acetaminophen plus careful opioid-sparing strategies more favorable for initial pain control. Ibuprofen would add an NSAID, which is the concern here, and thus is less ideal as the primary regimen immediately postoperatively.

So, using intravenous acetaminophen at the stated pediatric dose provides reliable pain relief with a safer profile in the immediate postop period after scoliosis surgery, aligning with a multimodal plan to minimize opioid exposure while safeguarding healing.