• K B Greenland, G Liu, H Tan, M Edwards, and M G Irwin.
• Department of Anaesthesia and Perioperative Medicine, Royal Brisbane & Women's Hospital, and Anaesthesiology and Critical Care - School of Medicine, University of Queensland, Brisbane, Australia. french9a@yahoo.co.uk
• Anaesthesia. 2007 May 1;62(5):509-15.

AbstractA randomised cross-over study was performed in 34 patients with no evidence of airway difficulties, following induction of general anaesthesia, to compare the efficacy of the Levitan FPS scope (LFPS) and the single-use bougie for tracheal intubation during simulated grade IIIa laryngoscopy. Success rates for intratracheal placement of the device, and the time required for insertion and tracheal intubation were recorded. Both devices were equally successful (31/34 for the LFPS vs 29/34 for the bougie) for insertion into the glottis. The mean insertion time for the LFPS was statistically longer than that for the bougie (4.4-12.5 s) but this difference was not clinically relevant. Intubation times were similar between the two devices. Major problems hindering successful intubation using the LFPS were the presence of a narrow epiglottic-pharyngeal wall space and copious secretions. An inability to maintain the desired shape was the principal cause of failure with the bougie.

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