期刊
EUROPEAN JOURNAL OF NEUROLOGY
卷 20, 期 2, 页码 331-337出版社
WILEY
DOI: 10.1111/j.1468-1331.2012.03857.x
关键词
antiepileptic drugs; central pain; levetiracetam; neuropathic pain; randomized clinical trial; stroke
资金
- UCB Pharma
- LEV
- Competence Network Stroke from the German Federal Ministry of Education and Health (BMBF) [01GI9902/04]
Background and purpose: Central post-stroke pain (CPSP) is a severe chronic neuropathic pain condition defined as a spontaneous pain or allodynia corresponding to a vascular lesion. It usually evolves weeks after stroke, and can distinctively impair the quality of life. Treatment is complex and mostly unsatisfactory. We hypothesized that the anti-epileptic drug levetiracetam (LEV) improves CPSP compared with placebo. The purpose of this study was to examine the efficacy and tolerability of LEV in patients with CPSP. Methods: In a double-blind, placebo-controlled, crossover study design patients with CPSP lasting at least 3 months and a pain score >= 4 on the 11-point Likert scale were treated over two 8-week periods with a maximum dose up to 3000 mg LEV or placebo. Primary endpoint was a median pain lowering >= 2 in the final treatment week compared with the last baseline week. Secondary outcome measures comprised additional pain ratings, depression, sleep quality, quality of life and patients' global impression of change. Results: Of 42 patients, 33 [61.5 years (40-76); 38% women] completed the study. Side effects and withdrawals were more frequent in the LEV (n = 5) group than in the placebo group (n = 1). Patients treated with LEV did not show any improvement of pain or changes in secondary outcome parameters compared with placebo. Conclusions: LEV is not effective in treatment for CPSP. The mode of action of LEV does not exert an analgesic effect in chronic CPSP.
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