Objective:To observe the effects of blind nasal intubation in maxillofacial anesthesia.
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实验组以带管芯的气管导管行盲探经鼻气管插管术,对照组则不带管芯.
Objective To investigate the feasibility of transnasal tracheal intubation with core catheters.
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神经阻滞多为盲探性操作，要求病人清醒合作能说出异感并能辨别异感放射的部位。
Most of nerve blocks are blind puncture, and require preservaion of consciousness and cooperation so that patients can tell paresthesia and the site of its radiations.
