[Safety and efficacy of visual flexible laryngeal masks in rhinology and otology surgery under general anesthesia].

To investigate the safety and efficacy of the visual flexible laryngeal mask in rhinology and otology surgery under general anesthesia. Patients who underwent elective rhinology and otology under general anesthesia from March to July 2024 in Beijing Tongren Hospital, Capital Medical University, were prospectively enrolled. Patients were inserted with visual flexible laryngeal mask after induction of general anesthesia. The success ratio of insertion and final ventilation of visual flexible laryngeal masks, ventilation effect and laryngeal mask alignment grade after induction, at the beginning and end of surgery, postoperative sore throat and other adverse events related to laryngeal mask use were observed. A total of 210 patients were included, including 102 males and 108 females, aged (48.7±13.6) years. Among them, 205 patients (97.6%) were successfully inserted with laryngeal masks, and the success ratio of ventilation was 100% (205/205). There were statistically significant differences in oropharyngeal leakage pressure at different time points in patients with successful laryngeal mask placement (P<0.05). The oropharyngeal leakage pressure at the beginning [(22.2±3.3) cmH₂O (1 cmH₂O=0.098 kPa)] and end of the operation [(22.4±3.1) cmH₂O] was higher than that after induction [(21.8±3.1) cmH₂O] (all P<0.05). There were no significant differences in the actual tidal volume, the difference between the actual tidal volume and the set value, and laryngeal mask alignment grade at different time points (all P>0.05). There were no airway adverse events during the operation. None of the patients had severe sore throat or other adverse events related to laryngeal mask use. The visual flexible laryngeal mask is safe and effective for rhinology and otology surgery, and can ensure ventilation during the operation.