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Updated: Aug 12, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
Published on: January 27, 2010
Postoperative extradural analgesia in children: comparison of morphine with fentanyl
C Lejus1, G Roussière, S Testa
1Departement d'Anesthésie, Hôtel-Dieu, Nantes, France.
Insights
Extradural fentanyl provided effective postoperative pain relief in children, comparable to morphine but with fewer side effects like nausea and vomiting. This suggests fentanyl is a safer option for pediatric pain management.
Area of Science:
- Anesthesiology
- Pediatric Pain Management
- Pharmacology
Background:
- Postoperative pain management in children is crucial for recovery.
- Extradural analgesia is a common method for managing severe pain.
- Comparing different analgesic agents is essential for optimizing patient care.
Purpose of the Study:
- To compare the efficacy and side effects of extradural morphine versus extradural fentanyl for postoperative pain relief in children.
- To evaluate pain scores, respiratory function, and adverse events in both treatment groups.
Main Methods:
- A randomized study involving 30 children (ages 1-16 years) undergoing surgery.
- Group M received extradural morphine bolus followed by a second dose 24 hours later.
- Group F received extradural fentanyl bolus followed by a continuous extradural infusion for 48 hours.
Main Results:
- Both extradural morphine and fentanyl provided satisfactory pain relief for 48 hours without major respiratory depression.
- Children receiving fentanyl experienced significantly less pruritus, nausea, and vomiting compared to morphine.
- Ventilatory frequency was higher in the morphine group at several time points post-analgesia.
Conclusions:
- Continuous extradural fentanyl infusion offers comparable analgesia to daily extradural morphine boluses in children.
- Extradural fentanyl is associated with a lower incidence of side effects, making it a potentially preferable option for pediatric postoperative pain management.
Abstract:
We have compared the efficacy and side effects of extradural morphine with extradural fentanyl for postoperative pain relief. Thirty children (ages 1-16 yr) were allocated randomly to receive, after extradural administration of 0.5% bupivacaine 0.75 ml kg-1 and before surgical incision, extradural morphine 0.75 microgram kg-1 (group M), with an additional dose administered 24 h later or extradural fentanyl 2 micrograms kg-1 (group F) followed by a continuous extradural infusion (during 48 h). There was no major complication (respiratory depression). Pain scores were satisfactory in both groups for 48 h. Ventilatory frequency was greater in group M 20, 21, 22, 23 and 25 h after the beginning of analgesia (P < 0.05). Pruritus, nausea and vomiting were less common with extradural fentanyl (20% vs 53%, P < 0.05 and 0% vs 33%, P < 0.05) than with morphine. Urinary retention occurred with equal frequency (25%) in the two groups. After a bolus of 2 micrograms kg-1, continuous extradural infusion of fentanyl 5 micrograms kg-1 day-1 provided analgesia comparable to that from a daily bolus of extradural morphine 0.75 mg kg-1 and produced fewer side effects.
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