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Oral clonidine premedication reduces postoperative pain in children
K Mikawa1, K Nishina, N Maekawa
1Department of Anaesthesiology, Kobe University School of Medicine, Japan.
Insights
Oral clonidine premedication effectively reduces postoperative pain in children undergoing minor surgery. The 4 micrograms/kg dose significantly lowered pain scores and decreased the need for additional analgesics.
Area of Science:
- Pediatric Anesthesiology
- Pharmacology
- Pain Management
Background:
- Clonidine is recognized for its sedative effects in pediatric preanesthesia.
- The analgesic potential of clonidine in adult populations is well-established.
- Limited research exists on clonidine's efficacy for postoperative pain in children.
Purpose of the Study:
- To evaluate the effectiveness of oral clonidine as a premedication for managing postoperative pain in children undergoing minor surgical procedures.
- To compare the impact of two different oral clonidine dosages (2 and 4 micrograms/kg) against a placebo.
Main Methods:
- A prospective, randomized, controlled clinical trial involving 90 children (aged 5-12 years) undergoing elective ophthalmic, urologic, or otologic surgery.
- Participants received either a placebo, clonidine 2 micrograms/kg, or clonidine 4 micrograms/kg orally 105 minutes before anesthesia induction, followed by atropine.
- Postoperative pain was objectively assessed by a blinded observer using the Objective Pain Scale (OPS) over 12 hours.
Main Results:
- The group receiving clonidine 4 micrograms/kg demonstrated significantly lower Objective Pain Scale scores in the 12 hours following surgery compared to placebo and the 2 micrograms/kg group.
- Children treated with the higher clonidine dose required fewer supplementary postoperative analgesics (diclofenac suppositories).
Conclusions:
- Oral clonidine premedication at a dosage of 4 micrograms/kg appears to be an effective strategy for improving postoperative analgesia in pediatric patients undergoing minor surgeries.
- This dosage may reduce the need for rescue pain medication, contributing to better pain management outcomes.
Abstract:
Clonidine is an effective preanesthetic medication in children, providing a preoperative sedative effect. The analgesic properties of the drug have been well documented in adults. The current study was designed to investigate the effect of oral clonidine given preoperatively on postoperative pain in children undergoing minor surgery. In a prospective, randomized, controlled clinical trial, 90 children aged 5-12 yr undergoing elective ophthalmic, urologic, and otologic surgery received placebo (control), clonidine 2 micrograms/kg, or clonidine 4 micrograms/kg. These drugs were administered 105 min before the estimated time of induction of anesthesia and followed by treatment with oral atropine 0.03 mg/kg 60 min before anesthesia. Anesthesia was induced and maintained with halothane and nitrous oxide in oxygen. Postoperative pain was assessed by a blinded observer using an objective pain scale (OPS). Clonidine 4 micrograms/kg provided lower OPS (highest) scores during 12 h after surgery and reduced requirement for postoperative supplementary analgesic (diclofenac suppository) compared with the other two regimens. These data suggest that oral clonidine premedication (4 micrograms/kg) is a possible approach to facilitating postoperative analgesia in children undergoing minor surgery.