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我院１９９３年１１月～１９９４年１月，采用双盲法，对结肠镜检查术前两种给药方法的效果进行比较研究。发现地卡因肛管麻醉法与常规术前给药法同样有效，而且无毒副作用。一、材料与方法：１．地卡因棉球制备：用脱脂棉做成直径约３ｃｍ的棉球，缝扎一条５ｃｍ长的棉线。高
In our hospital from November 1993 to January 1994, the double-blind method was used to compare the effects of the two administration methods before colonoscopy. Cocaine anal canal anesthesia was found to be as effective as conventional premedication, with no toxic or side effects. First, materials and methods: 1. Cocaine cotton ball preparation: made of cotton wool with a diameter of about 3cm, suture a 5cm long cotton thread. high