Objective To explore the best needle retention time by observing the effect of electroacupuncture with different needle retention time on patients with postherpetic neuralgia(PHN). Methods Seventy-eight patients with PHN were divided into 10(17cases) ,20(20 cases) ,30(22 cases) and 40 minutes group(19 cases) ,the Jiaji point,Renzhong.Shenshu, Yaotongdian and Dachangshu of all patients were treated with continuous wave by electroacupuncture treatment instrument. The pain score evaluation was performed with six-point behavioral rating scale. Results Before treatment, there was no statistical difference in the pain scare among four groups (P >0. 05 ). Compared with pretrealment, the pain scores were lower in four groups after treatment(P <0. 01 ). After treatment, there was no statistical difference in the pain score between 10 minutes group and 20 minutes group( P >0. 05), the pain scores of 30 and 40 minutes group were significantly lower than those of 10 and 20 minutes group( P <0.01) ,hut there was no statistical difference in the pain score between 30 minutes group and 40 minutes gtoup(P>0. 05). There was no statistical difference in the total effective rale between 10 minutes group and 20 minutes group,30 minutes and 40 minutes(P>0.05) ,but the total effective rales of 30 and 40 minutes group were significantly higher than those of 10 and 20 minutes group( P <0.05). Conclusion Acupuncture treatment with 30 minutes on PHN can obtain satisfactory effect.%目的 观察不同留针时间针刺治疗带状疱疹后遗神经痛(PHN)的疗效,探讨最佳留针时间.方法 将78例PHN患者分为10(17例)、20(20例)、30(22例)和40 min组(19例),4组患者均取夹脊穴、人中、肾俞、手背腰痛点、大肠俞,用电针治疗仪连续波进行留针.采用六点行为评分法进行疼痛积分评定.结果 4组治疗前患者疼痛评分比较差异均无统计学意义(P＞0.05).4组患者治疗后与治疗前比较疼痛评分均显著降低(P＜0.01).治疗后10 min组与20 min组疼痛评分比较差异无统计学意义(P＞0.05),30和40 min组疼痛评分显著低于10和20 min组(P＜0.01),30 min组与40 min组疼痛评分比较差异无统计学意义(P＞0.05).10 min组与20 min组、30 min组与40 min组总有效率比较差异无统计学意义(P＞0.05)；30和40 min组总有效率显著高于10和20 min组(P＜0.05).结论 针刺治疗PHN时留针30 min可获得满意疗效.
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