A double-blind comparison of morphine infusion and patient controlled analgesia in children

Area of Science:

• Pediatric Surgery
• Pain Management
• Anesthesiology

Background:

• Effective postoperative pain management is crucial for pediatric recovery after major abdominal surgery.
• Morphine is commonly used for analgesia, but delivery methods vary.
• Continuous infusion and patient-controlled analgesia (PCA) are two established methods.

Purpose of the Study:

• To compare the efficacy of continuous morphine infusion versus PCA for postoperative pain relief in children undergoing major abdominal surgery.
• To evaluate pain scores using validated tools in different age groups.

Main Methods:

• A double-blind, double-dummy study design was employed with 30 pediatric patients.
• Morphine was administered via continuous infusion or PCA.
• Pain was assessed using a visual analogue scale and the Poker Chip Tool by a single observer over two four-hour periods on postoperative days 1 and 2.

Main Results:

• Children aged 9-15 years reported significantly better pain relief with PCA compared to continuous morphine infusion.
• No significant difference in pain scores was observed between the two methods for children aged 5-8 years.
• Patient demographics (age, weight, operation duration, sex ratio) were comparable between groups.

Conclusions:

• Patient-controlled analgesia (PCA) is a more effective method for managing postoperative pain in older children (9-15 years) after major abdominal surgery.
• Continuous morphine infusion may be as effective as PCA for pain management in younger children (5-8 years).
• Further research may explore optimal analgesia strategies tailored to different pediatric age groups.