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Updated: Aug 14, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
Published on: January 27, 2010
Caudal anaesthesia for postoperative pain relief in children: a comparative trial of different regimens using plain
1Department of Anaesthetics, University Hospital, Queen's Medical Centre, Nottingham.
Insights
This study compared three bupivacaine dosage regimens for caudal block in pediatric surgery. All regimens effectively prevented postoperative pain without significant differences in efficacy or side effects, ensuring excellent analgesia for children.
Area of Science:
- Pediatric Anesthesiology
- Pain Management
- Pharmacology
Background:
- Postoperative pain in children undergoing inguinal surgery requires effective management.
- Caudal bupivacaine is a common anesthetic technique for pediatric procedures.
- Optimizing bupivacaine dosage regimens is crucial for balancing efficacy and safety.
Purpose of the Study:
- To compare the efficacy and safety of three different bupivacaine dosage regimens administered via caudal route.
- To evaluate postoperative pain prevention in children undergoing elective inguinal herniotomy or ligation of patent processus vaginalis.
- To assess the onset of analgesia and identify any adverse effects.
Main Methods:
- A comparative trial involving three bupivacaine dosage regimens: 0.25% (1 ml/kg), and weight-based 0.25% or 0.5% calculated by (Age (years) + 2) ml.
- Pain was evaluated using a linear analogue pain scale.
- Onset of analgesia was assessed by intraoperative heart rate changes in response to surgical stimulation.
Main Results:
- All three bupivacaine regimens provided excellent postoperative analgesia.
- No significant differences in pain scores were observed between the groups.
- Onset of analgesia and adverse effects, including motor weakness, bladder dysfunction, and local anesthetic toxicity, were similar across all groups.
Conclusions:
- The studied bupivacaine dosage regimens are equally effective for caudal analgesia in pediatric inguinal surgery.
- These findings support the use of various bupivacaine concentrations and dosing strategies for effective pain management.
- Caudal bupivacaine administration is safe and reliable for preventing postoperative pain in pediatric patients undergoing these procedures.
Abstract:
A comparative trial between three different dosage regimens of bupivacaine administered by the caudal route, used for the prevention of postoperative pain in children undergoing elective inguinal herniotomy or ligation of patient processus vaginalis was undertaken. The regimens compared were bupivacaine 0.25% (1 ml/kg), bupivacaine 0.25% or 0.5%: (Age (years +2)/10 ml per dermatome to be blocked. This being calculated for inguinal surgery to be Age (years) + 2 ml. A linear analogue pain scale was used to evaluate pain, all three regimens being found to produce excellent analgesia, there being no significant difference between the pain scores of the three groups. Time to onset of analgesia, as indicated by changes in intraoperative heart rate in response to surgical stimulation were also similar in all groups. No evidence of postoperative motor weakness or disturbance of bladder function was found and there were no symptoms or signs attributable to local anaesthetic toxicity.
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