COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Disposable versus reusable laryngeal tube suction for ventilation in patients undergoing laparoscopic cholecystectomy

Afshin Amini, Farid Zand, Masoud Maghbooli
Revista Brasileira de Anestesiologia 2010, 60 (1): 32-41
20169261

BACKGROUND AND OBJECTIVE: The laryngeal tube suction II (LTS-II) is a recent version of reusable supraglottic airway devices allowing gastric drainage. In this prospective, randomized study we compared insertion and ventilation of disposable LTS-II (LTS-D) with reusable type (LTS-II) for airway management under conditions with elevated intra abdominal pressure induced by capnoperitoneum.

METHODS: 60 ASA I and II patients undergoing elective laparoscopic cholecystectomy were randomized to receive either a LTS-D (n=30) or 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, fiberoptic view, risk of gastric insufflation, insertion of nasogastric tube and postoperative pharyngeal morbidity were examined.

RESULTS: First time and second time success rates were comparable for both groups (86% vs. 93% and 96% vs. 96% in LTS-D and LTS-II groups, respectively). One patient in each group could not be intubated after three attempts. After gas insufflation, ventilation of one patient in LTS-D and 2 patients in LTS-II groups was faulty and the patients were intubated with endotracheal tube. Time until delivery of first tidal volume for LTS-D and LTS-II was 20.8 +/- 11.6 s, and 18.2 +/- 4.8 seconds respectively (p = 0.27), fixation and manipulation time was 73.3 +/- 18.5 and 65.5 +/- 16.2 seconds, respectively (p = 0.096). Nasogastric tube insertion was successful in all patients. There were no significant differences in postoperative complaints.

CONCLUSIONS: Both devices provide a secure airway under conditions of elevated intra abdominal pressure.

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