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普鲁卡因为常用酯类局麻药，对皮肤粘膜穿透力弱，一般要注射给药，作用于神经组织才能生效。0．25～0．5％溶液仅能作用于纤细感觉神经末梢；2．0％溶液才能阻滞粗大的运动神经纤维的传导，主要用于门诊手术，进行浸润局麻或区域阻滞。本文报道拔牙时用2．0％普鲁卡因过敏1例
Procaine as a common ester local anesthetic, weak penetration of the skin and mucous membranes, the general injection, the role of nerve tissue to take effect. 0.25% ~ 0.5% solution can only act on slender sensory nerve endings; 2.0% solution can block the conduction of coarse motor nerve fibers, mainly for outpatient surgery, infiltration of local anesthesia or regional block. This article reports 1 case of 2.0% procaine allergy during tooth extraction