目的比较食管引流型喉罩通气道（PLMA）和标准型喉罩通气道（SLMA）在全身麻醉患者的应用。
Objective To compare the application of ProSeal laryngeal mask airway (PLMA) with standard laryngeal mask airway(SLMA) in the patients undergoing general anesthesia.
目的采用随机自身对照设计方法比较食管引流型喉罩通气道(PLMA)和标准型喉罩通气道(SLMA)用于间歇正压通气的有效性。
Objective to compare the ProSeal laryngeal mask airway (PLMA) and the standard laryngeal mask airway (SLMA) for intermittent positive pressure ventilation (IPPV) in a randomized auto control design.
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