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Age-related postoperative morphine requirements in children following major surgery--an assessment using
T G Hansen1, S W Henneberg, P Hole
1Department of Anaesthesia and Intensive Care Medicine, Odense University Hospital, Denmark.
Insights
Young children (4-8 years) need more morphine for pain relief after surgery than older children (9-15 years). This study analyzed intravenous patient-controlled analgesia (PCA) in pediatric patients.
Area of Science:
- Pediatric Anesthesiology
- Pain Management
- Pharmacology
Background:
- Postoperative pain management in children is crucial.
- Understanding age-specific analgesic needs is essential for effective pain control.
- Patient-controlled analgesia (PCA) is a common method for delivering analgesics postoperatively.
Purpose of the Study:
- To compare morphine requirements for postoperative analgesia in young children versus older children and adolescents.
- To investigate age-related differences in morphine consumption following major surgery.
Main Methods:
- Analysis of morphine consumption in 28 pediatric patients receiving intravenous PCA.
- Comparison of median age-specific morphine requirements between two groups: 4-8 years and 9-15 years.
- Standardized PCA settings (bolus dose, lockout interval, no background infusion) and supplemental paracetamol were used.
Main Results:
- Children aged 4-8 years had significantly higher total postoperative morphine requirements (11.6 microgram/kg/hour) compared to children aged 9-15 years (7.5 microgram/kg/hour).
- The difference in morphine consumption was statistically significant (p = 0.037).
Conclusions:
- Younger children (4-8 years) may require higher total morphine doses for postoperative analgesia following major surgery compared to older children and adolescents.
- Age is a significant factor influencing morphine requirements in pediatric patients managed with PCA.
Abstract:
To investigate if small children require less morphine for postoperative analgesia than do older children and adolescents we analysed the morphine consumption pattern of 28 consecutive children on intravenous patient-controlled analgesia (PCA) following major surgery. The median age-specific morphine requirements between 2 comparable groups of children aged 4-8 years and 9-15 years were compared. We used the Pharmacia-Deltec pump in all children and the same settings: a bolus dose of 25 microgram/kg, an 8 minutes lockout interval and no background infusion. In addition, all children received paracetamol as a supplemently to the morphine. In this study children aged 4-8 years had significantly higher total postoperative morphine requirements compared to children aged 9-15 years, i.e. 11.6 microgram/kg/hour and 7.5 microgram/kg/hour respectively (p = 0.037). Hence, we conclude that children of this age group may have a higher total postoperative morphine requirement following major surgery than older children and adolescents.