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Meptazinol in the treatment of severe post-operative pain: a comparison with morphine
Abstract:
The efficacy of meptazinol (100 mg) was compared to morphine (15 mg) in the relief of post-operative orthopaedic pain. In a randomised double blind study, 35 patients received meptazinol and 28 morphine. The onset of maximum analgesia was quicker with meptazinol. The mean intervals between first and second intramuscular doses were 2.4 hours and 2.7 hours for meptazinol and morphine respectively. Four patients were withdrawn from the study after receiving meptazinol because analgesia was inadequate and morphine scored better than meptazinol in an assessment of overall quality of treatment. The effects on the cardiovascular system were similar for both drugs but meptazinol caused significantly less elevation of arterial PCO2 than morphine.
Insights
Meptazinol offered faster pain relief onset than morphine for post-operative orthopedic pain. However, morphine provided better overall treatment quality, despite similar cardiovascular effects and less PCO2 elevation with meptazinol.
Area of Science:
- Pain Management
- Pharmacology
- Orthopaedic Surgery
Background:
- Post-operative pain management is crucial for patient recovery.
- Opioid analgesics like morphine are commonly used but can have side effects.
- Meptazinol is an alternative analgesic agent requiring efficacy comparison.
Purpose of the Study:
- To compare the analgesic efficacy of meptazinol and morphine in post-operative orthopaedic pain.
- To evaluate the onset and duration of analgesia for both drugs.
- To assess the overall quality of treatment and side effect profiles.
Main Methods:
- A randomized, double-blind study design was employed.
- 35 patients received meptazinol (100 mg) and 28 received morphine (15 mg).
- Pain relief, onset of analgesia, duration, and overall treatment quality were assessed.
Main Results:
- Meptazinol demonstrated a quicker onset of maximum analgesia compared to morphine.
- Mean intervals between doses were 2.4 hours for meptazinol and 2.7 hours for morphine.
- Morphine was rated higher for overall treatment quality, with four meptazinol patients withdrawn due to inadequate pain relief.
Conclusions:
- Meptazinol provides a faster onset of analgesia but may be less effective for overall pain management compared to morphine in orthopaedic settings.
- Both drugs had similar cardiovascular effects.
- Meptazinol showed a significant advantage in causing less elevation of arterial PCO2 than morphine.