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Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
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Published on: July 29, 2014

Comparison of clonidine 1 microgram kg-1 with morphine 30 micrograms kg-1 for post-operative caudal analgesia in

G Luz1, P Innerhofer, E Oswald

  • 1Department of Anaesthesia, University Hospital, Innsbruck, Austria.

European Journal of Anaesthesiology
|March 20, 1999
PubMed

Insights

Clonidine added to caudal bupivacaine provides comparable analgesia to morphine in pediatric surgery. This low dose of clonidine offers a safe alternative to morphine, without causing respiratory depression.

Area of Science:

  • Pediatric Anesthesiology
  • Pain Management
  • Pharmacology

Background:

  • Caudal anesthesia is common in pediatric surgery.
  • Morphine is frequently used for caudal analgesia.
  • Exploring alternatives to morphine is important for optimizing pain management.

Purpose of the Study:

  • To compare the efficacy and safety of caudal bupivacaine-clonidine versus bupivacaine-morphine in children.
  • To determine if clonidine can serve as a viable alternative to morphine in caudal anesthesia.

Main Methods:

  • Prospective randomized study involving 36 children undergoing elective surgery.
  • Comparison of caudal bupivacaine with either clonidine (1 µg/kg) or morphine (30 µg/kg).
  • Monitoring of hemodynamic, respiratory, analgesic, and recovery parameters for 24 hours.

Main Results:

  • Comparable duration of analgesia between the clonidine and morphine groups (6.3h vs 7.1h).
  • A significant portion of patients in both groups required no supplementary analgesia.
  • Recovery time was significantly longer in the clonidine group (16.6 min) compared to the morphine group (11.5 min).
  • No respiratory depression was observed with low-dose clonidine.

Conclusions:

  • Caudal bupivacaine-clonidine offers comparable analgesia to bupivacaine-morphine in pediatric patients.
  • Low-dose clonidine is a safe alternative to morphine in caudal anesthesia for children.
  • Further research may explore optimizing clonidine dosage for faster recovery.

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