title: Ease of tracheal intubation through the intubating laryngeal mask during manual in-line head and neck stabilisation.
abstract: We studied 40 anaesthetised and paralysed patients, in a randomised manner, to compare the ease of tracheal intubation either using a Macintosh laryngoscope and gum elastic bougie (group C) with the ease of tracheal intubation through the intubating laryngeal mask using a fibreoptic bronchoscope (group L), during manual in-line stabilisation of the patient's head and neck. In both groups, a maximum of 120 s was allowed for attempts at tracheal intubation. The ease of placement of the intubating laryngeal mask or tracheal intubation was assessed using a 100-mm visual analogue scale (VAS). In patients in whom tracheal intubation succeeded, time for intubation was measured. The intubating laryngeal mask was placed successfully in 19 of 20 patients, with the median VAS of 18 mm (95% CI: 13-32 mm). The success rate of tracheal intubation in group L (17 patients) was significantly higher than in group C (nine patients) (p < 0.01), tracheal intubation in group L was significantly easier than intubation in group C (p < 0.001; 95% CI for difference in VAS: 18-68 mm) and time taken for tracheal intubation was significantly shorter in group L than in group C (95% CI for difference: 8-50 s).
authors.affiliation: Department of Anaesthesiology and Department of Otolaryngology, Kansai Medical University, 10-15 Fumizono-cho, Moriguchi City, Osaka, 570-8507, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Asai
authors.forename: K
authors.initials: K
authors.lastname: Murao
authors.forename: T
authors.initials: T
authors.lastname: Tsutsumi
authors.forename: K
authors.initials: K
authors.lastname: Shingu
mesh_terms: D000328:Adult; D000368:Aged; D018685:Anesthetics, Inhalation; D018686:Anesthetics, Intravenous; D004868:Equipment Failure; D005260:Female; D006801:Humans; D017214:Laryngeal Masks; D020704:Laryngoscopes; D008297:Male; D008738:Methyl Ethers; D008875:Middle Aged; D009609:Nitrous Oxide; D015742:Propofol; D000077149:Sevoflurane; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D018685:Anesthetics, Inhalation; D018686:Anesthetics, Intravenous; D008738:Methyl Ethers; D000077149:Sevoflurane; D009609:Nitrous Oxide; D015742:Propofol