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[Mr 1268--a new furylmethyl-substituted benzomorphan. Comparison of its effects with pentazocine and placebo in a
Abstract:
Mr 1268 (alpha-5,9-dimethyl-2(3-methyl-3-methylfuryl)-2-hydroxy-6, 7-benzomorphan) was tested in two dosages (15 mg and 30 mg) at random on a total of 200 patients with severe postoperative pain in a double blind study against pentazocine and placebo. The analgesic effect of 30 mg Mr 1268 and 30 mg pentazocine compared with placebo was statistically significant 15 min after intramuscular injection. At the dosage applied no major respiratory or circulatory effects were observed in the patients. The minimal changes in the systolic blood pressure were of no statistical significance. Side-effects observed in many patients in the verum group were miosis and transpiration. For all other side-effects there was no statistically significant difference between placebo and the verum group or among the various verum groups.
Insights
This study found that 30 mg of Mr 1268 provided significant pain relief for severe postoperative pain, comparable to pentazocine, with minimal side effects. Both analgesics were effective starting 15 minutes post-injection.
Area of Science:
- Pharmacology
- Anesthesiology
- Pain Management
Background:
- Severe postoperative pain requires effective analgesia.
- Opioid and non-opioid analgesics are commonly used.
- Novel analgesics are continuously investigated for improved efficacy and safety.
Purpose of the Study:
- To evaluate the analgesic efficacy and safety of Mr 1268 in patients with severe postoperative pain.
- To compare the effects of Mr 1268 with pentazocine and placebo.
Main Methods:
- A double-blind, randomized study involving 200 patients with severe postoperative pain.
- Patients received Mr 1268 (15 mg and 30 mg), pentazocine (30 mg), or placebo via intramuscular injection.
- Analgesic effects and side effects were monitored.
Main Results:
- Both 30 mg Mr 1268 and 30 mg pentazocine demonstrated statistically significant analgesic effects compared to placebo, evident 15 minutes post-injection.
- No significant respiratory or circulatory adverse effects were noted at the tested dosages.
- Common side effects for Mr 1268 included miosis and transpiration; other side effects did not differ significantly from placebo.
Conclusions:
- Mr 1268, at a 30 mg dosage, is an effective analgesic for severe postoperative pain.
- The safety profile of Mr 1268 appears favorable, with no significant cardiovascular or respiratory complications observed.
- Further research may explore Mr 1268's potential as an alternative analgesic option.