VE:To compare the effect between general anesthesia by nasal cavity blindly intubation with and without topical anesthesia through thyrocricocentesis in maxillofacial operations.
目的：比较行环甲膜穿刺表麻与否对全麻鼻腔盲探插管的影响。
VE:To compare the effect between general anesthesia by nasal cavity blindly intubation with and without topical anesthesia through thyrocricocentesis in maxillofacial operations.
目的：比较行环甲膜穿刺表麻与否对全麻鼻腔盲探插管的影响。
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