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Caudal tramadol for postoperative analgesia in pediatric hypospadias surgery
D P Prosser1, A Davis, P D Booker
1Department of Anaesthesia, Royal Liverpool Children's NHS Trust.
Insights
Caudal tramadol showed a slow onset for postoperative pain relief in boys undergoing hypospadias repair. Adding tramadol to bupivacaine did not significantly extend pain relief duration compared to bupivacaine alone.
Area of Science:
- Pediatric Anesthesiology
- Pain Management
- Surgical Outcomes
Background:
- Hypospadias repair is a common pediatric surgical procedure.
- Effective postoperative pain management is crucial for recovery and patient well-being.
- Caudal anesthesia is frequently used for analgesia in pediatric surgery.
Purpose of the Study:
- To compare the efficacy of caudal bupivacaine, tramadol, and a combination of both for postoperative pain management in boys undergoing hypospadias repair.
- To evaluate the onset and duration of analgesia provided by these agents.
- To assess the safety and side effect profiles of caudal tramadol and bupivacaine.
Main Methods:
- Ninety boys (13-53 months) received caudal extradural injections of bupivacaine, tramadol, or a bupivacaine-tramadol mixture.
- Postoperative pain was assessed hourly for 12 hours using a modified TPPPS pain score.
- Additional analgesia was administered for pain scores > 3/10.
Main Results:
- Tramadol group showed a higher incidence of requiring additional analgesia within 1 hour (30%) compared to bupivacaine (6.7%) and the combination group (10%).
- No significant differences were observed in the mean duration before additional analgesia was required among the groups.
- No significant differences were found in ventilatory frequency, sedation, emesis, flushing, or pruritus.
Conclusions:
- Caudal tramadol exhibits a slow onset of action for postoperative pain relief in pediatric hypospadias surgery.
- Combining tramadol with bupivacaine did not significantly prolong the analgesic duration of bupivacaine when administered caudally.
- Caudal bupivacaine appears to be a more effective initial analgesic agent than caudal tramadol in this patient population.
Abstract:
Ninety boys, aged 13-53 months, undergoing repair of hypospadias, were allocated randomly to receive 0.8 ml kg-1 of one of three solutions into the caudal extradural space: group B received bupivacaine 2 mg kg-1, group T received tramadol 2 mg kg-1 in 0.9% saline and group BT a mixture of both. Postoperative pain was assessed hourly for 12 h after injection using a modified TPPPS pain score and additional analgesia was administered to those children whose pain scores were > 3/10. Nine patients (30%) in group T required additional analgesia within 1 h of surgery compared with only two (6.7%) and three (10%) patients in groups B and BT, respectively (P = 0.04). Mean duration before additional analgesia was required in the remaining patients was 9.3 (SD 3.0) h in group B, 10.7 (2.2) h in group T and 10.5 (2.0) h in group BT (P > 0.20). There were no significant differences between the groups in mean ventilatory frequency, sedation scores, incidence of emesis, facial flushing or pruritus. We conclude that caudal tramadol had a slow onset of action and that the addition of tramadol to bupivacaine, when both drugs were administered caudally, did not significantly prolong the duration of action of bupivacaine.