Comparison of disposable and reusable laryngeal tube suction II for ventilations in patients undergoing laparoscopic cholecystectomy

The laryngeal tube suction II (LTS-II) is a recent version of supraglottic airway devices allowing gastric drainage. In this prospective, randomized study we compared insertion and ventilation of disposable LTS-II with reusable type for airway management under conditions with elevated intra abdominal pressure induced by capnoperitoneum. 60 ASA I-II patients undergoing elective laparoscopic cholecystectomy were randomized to receive either a disposable (n=30) or reusable LTS-II (n=30) for airway management. After induction of general anaesthesia the devices were inserted, their correct placement was verified and airway leak pressure was measured. Ease of insertion, quality of airway seal, fiber-optic view, risk of gastric insufflation, insertion of nasogastric tube and post operative pharyngeal morbidity were examined. First time and second time success rates were equal for both groups 96.6%). One patient in each group could not be intubated with LTS-II after three attempts. After gas insufflation, ventilation of one and two patients in disposable and reusable LTS-II groups was failed respectively, and the patients were intubated with endotracheal tube. Nasogastric tube insertion was successful in all patients. No significant gastric distention occurred in both groups. There were no significant differences in post operative complaints. Both devices provide a secure airway under conditions of elevated intra abdominal pressure. No differences concerning handling or quality of airway seal were detected between disposable and reusable LTS-II.