期刊
BMJ-BRITISH MEDICAL JOURNAL
卷 329, 期 7460, 页码 253-257出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/bmj.38149.566979.AE
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Objective To evaluate the effect of the oral synthetic delta-9-tetrahydrocannabiriol dronabinol on central neuropathic pain in patients with multiple sclerosis. Design Randomised double blind placebo crossover trial. Setting Outpatient clinic, University Hospital of Aarhus, Denmark. Participants 24 patients aged between 23 and 55 years with multiple sclerosis and central pain. Intervention Orally administered dronabinol at a maximum dose of 10 mg daily or corresponding placebo for three weeks (15-21 days), separated by a three week washout period. Main outcome measure Median spontaneous pain intensity (numerical rating scale) in the last week of treatment. Results Median spontaneous pain intensity was significantly lower during dronabinol treatment than during placebo treatment (4.0 (25th to 75th centiles 2.3 to 6.0) v 5.0 (4.0 to 6.4), P = 0.02), and median relief score (numerical rating scale) was significantly higher (3.0 (0 to 6.7) v 0 (0 to 2.3), P = 0.035). The number needed to a-eat for 50% pain relief was 3.5 (95% confidence interval 1.9 to 24.8). On the SF-36 quality of life scale, the two items bodily pain and mental health indicated benefits from active compared with placebo. The number of patients with adverse events was higher during active treatment, especially in the first week of treatment. The functional ability of the multiple sclerosis patients did not change. Conclusions Dronabinol has a modest but clinically relevant analgesic effect on central pain in patients with multiple sclerosis. Adverse events, including dizziness, were more frequent with dronabinol than with placebo during the first week of treatment.
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