Jensen T S, Høye K, Fricová J, Vanelderen P, Ernault E, Siciliano T, Marques S
Department of Neurology, Danish Pain Research Centre, Aarhus University Hospital, Denmark.
Eur J Pain. 2014 Oct;18(9):1240-7. doi: 10.1002/j.1532-2149.2014.00479.x. Epub 2014 Mar 24.
BACKGROUND: Application of the capsaicin 8% patch is associated with treatment-related discomfort. Consequently, pretreatment for 60 min with anaesthetic cream is recommended; however, this may be uncomfortable and time consuming. METHODS: We conducted a multicentre, randomized (1:1), assessor-blinded study in patients with peripheral neuropathic pain to assess tolerability of the capsaicin patch following topical lidocaine (4%) or oral tramadol (50 mg) pretreatment. The primary endpoint was the proportion of patients tolerating capsaicin patch application (ability to receive ≥90% of a 60-min application). Numeric Pain Rating Scale (NPRS) scores were assessed before, during and after treatment. RESULTS: Overall, 122 patients were included (61 per arm). The capsaicin patch was tolerated by 121 patients. Tolerability of the capsaicin patch was similar following pretreatment with lidocaine and tramadol. Following patch application, pain levels increased up to 55 min (change from baseline of 1.3 for lidocaine and 1.4 for tramadol). After patch removal, tramadol-treated patients experienced greater pain relief up to the end of day 1; in the evening, mean changes in NPRS scores from baseline were 0 for lidocaine and -1 for tramadol. Proportions of patients reporting increases of ≥2 NPRS points or >33% from baseline at one or more time point(s) on the day of treatment were similar between arms. Adverse event incidence was comparable between arms. CONCLUSIONS: Capsaicin 8% patch tolerability was similar in the two arms, with comparable results for most secondary endpoints. Tramadol given 30 min before patch application should be considered as an alternative pretreatment option in patients receiving capsaicin patch treatment.
背景:8%辣椒素贴剂的应用与治疗相关的不适有关。因此,建议使用麻醉乳膏预处理60分钟;然而,这可能会带来不适且耗时。 方法:我们对周围神经性疼痛患者进行了一项多中心、随机(1:1)、评估者盲法研究,以评估局部用利多卡因(4%)或口服曲马多(50毫克)预处理后辣椒素贴剂的耐受性。主要终点是能够耐受辣椒素贴剂应用的患者比例(能够接受60分钟应用的≥90%)。在治疗前、治疗期间和治疗后评估数字疼痛评分量表(NPRS)得分。 结果:总共纳入了122例患者(每组61例)。121例患者耐受了辣椒素贴剂。利多卡因和曲马多预处理后辣椒素贴剂的耐受性相似。贴剂应用后,疼痛水平在55分钟内升高(利多卡因组从基线变化1.3,曲马多组从基线变化1.4)。去除贴剂后,曲马多治疗的患者在第1天结束时疼痛缓解更明显;晚上,利多卡因组NPRS得分相对于基线的平均变化为0,曲马多组为-1。在治疗当天的一个或多个时间点报告NPRS得分较基线增加≥2分或>33%的患者比例在两组之间相似。两组不良事件发生率相当。 结论:两组中8%辣椒素贴剂的耐受性相似,大多数次要终点结果相当。在接受辣椒素贴剂治疗的患者中,贴剂应用前30分钟给予曲马多应被视为一种替代预处理选择。
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