Clinical observation of laryngeal mask airway I-gel in patients undergoing microvascular decompression of facial nerve

Abstract

Objective To assess the efficacy of laryngeal mask airway I-gel(LMA I-gel) in patients undergoing microvascular decompression of facial nerve. Methods Ninety ASA patients withⅠ or Ⅱ of both sexes, aged 20-55 y, body mass index of 18-25 kg/m2, of Mallampati Ⅰ-Ⅲ, undergoing microvascular decompression of facial nerve, were completely randomly divided into 3 groups(n=30): I-gel group (group I), Supreme group (group S), endotracheal intubation group(group Q). The time spent for intubation and success rate of intubation for the first time were recorded in the three groups, Oropharyngeal leak pressure and fiberoptic laryngoscopy scores were observed in lateral position in group I and group S. Vital signs were monitered after entering the operating room(T0), before intubation(T1), intubation(T2), before extubation(T3) extubation immediately(T4). The extubation time of laryngeal mask and tracheal catheter and consciousness recovery time were observed. The postoperative cough, sore throat, nausea, vomiting and other adverse reactions were recorded too. Results Regarding the time spent for intubation, group I and group S was shorter than group Q[(12±3), (16±4) s vs (30±6) s](P 0.05). Oropharyngeal leak pressure in lateral position was more higher in group I than in group S[(28±3) cmH2O(1 cmH2O=0.098 kPa) vs (24±4) cmH2O](P 0.05). Conclusions Laryngeal mask I-gel, laryngeal mask supreme and tracheal can be used effectively for microvascular decompression of facial nerve, but laryngeal mask I-gel can provide adequate ventilation during operation with less complications, more easy insertion and more stable hemodynamics. Key words: Laryngeal mask; Microvascular decompression of facial nerve; Airway management