Abstract: ［Abstract］Objective〖HTSS〗To explore the application effects of laryngeal mask in airway management of patients undergoing hysteroscopic surgery.
Methods〖HTSS〗A total of 150 patients who underwent gynecological hysteroscopic surgery under general anesthesia were selected and randomly divided into three groups, with 50 cases in each group. T group was given tracheal intubation to establish a safe airway, and P group was given ProSeal laryngeal mask, and S group was given Supreme laryngeal mask. The frequencies and success rate of tracheal intubation or laryngeal mask placement, intraoperative conditions, vital signs and complications were observed among three groups.
Results〖HTSS〗The success rate of one-time placement in P group and S group was higher than that in T group(P＜0.05). The placement time in S group was smaller than that in T group, and the extubation time in P group and S group was smaller than that in T group, and the airway sealing pressure was higher than that in T group(P＜0.05). There were no significant differences in the success rate, placement time, extubation time and airway sealing pressure of laryngeal mask placement between P group and S group(P＞0.05). There were no significant differences in anesthesia time and recovery time among three groups(P＞0.05). The mean artery pressure(MAP), heart rate(HR) and pulse oxygen saturation(SpO2) in the three groups were fluctuating at each time point, and there were statistically significant differences in the time-point effects and interactions of time-point and between-groups(P＜0.05), and there were no significant differences in the MAP, HR and SpO2 among the three groups at each time point(P＞0.05). The incidence rates of postoperative sore throat and dysphagia in P group and S group were lower than those in T group(P＜0.05). There were no significant differences in the incidence rates of bucking, laryngospasm, gaseous distention and jaw pain among the three groups(P＞0.05).
Conclusion〖HTSS〗Compared with tracheal intubation, hysteroscopic surgery under general anesthesia for laryngeal mask to establish a safe airway is easy to operate and easy to place, and it has better ventilation effects and airway sealing, and has no effects on hemodynamics during surgery and fewer complications after extubation. ProSeal laryngeal mask and Supreme laryngeal mask are well-applied for safe airway management in patients undergoing hysteroscopic surgery.

Key words: hysteroscopy, laryngeal mask, airway management