Document Detail

A randomised comparison of InnoScope and Macintosh laryngoscope in simulated difficult tracheal intubation in manikins.
MedLine Citation:
PMID:  23153175     Owner:  NLM     Status:  MEDLINE    
We conducted a crossover randomised study to evaluate the performance of a novel optical stylet, the InnoScope, for tracheal intubation in simulated normal and difficult airways. Twenty-five anaesthetists attempted tracheal intubation on a SimMan 3G simulator using the InnoScope first followed by the Macintosh laryngoscope or vice versa. Three airway scenarios were tested: (1) normal airway; (2) difficult airway with swollen pharynx; and (3) limited neck movement. In each scenario, the laryngeal view, duration of and success rate for tracheal intubation were recorded. Compared with the Macintosh laryngoscope, the use of InnoScope increased the percentage of glottic opening seen by 17% in normal airway, 23% in the difficult airway and 32% with limited neck movement, p < 0.01. Despite this better laryngeal view, successful tracheal intubation achieved with the InnoScope (88.0%) was lower than that for the Macintosh laryngoscope (98.7%), p = 0.008. Using the InnoScope, tracheal intubation during the first attempt was only successful in 48% of cases with difficult airway. In this scenario, the median (interquartile range [range]) duration of tracheal intubation was significantly longer with [corrected] InnoScope compared with the Macintosh laryngoscope, (70 (19-120 [15-120)] s vs 30 [21-58 (15-120)] s, [corrected] p = 0.01. We conclude that an improved laryngeal view with the use of the InnoScope did not translate into better conditions for tracheal intubation.
A W Y Fong; K C Lam; B C P Cheng; K K Lam; M T V Chan
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial     Date:  2012-11-15
Journal Detail:
Title:  Anaesthesia     Volume:  68     ISSN:  1365-2044     ISO Abbreviation:  Anaesthesia     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-09     Completed Date:  2013-03-05     Revised Date:  2013-05-21    
Medline Journal Info:
Nlm Unique ID:  0370524     Medline TA:  Anaesthesia     Country:  England    
Other Details:
Languages:  eng     Pagination:  167-74     Citation Subset:  AIM; IM    
Copyright Information:
Anaesthesia © 2012 The Association of Anaesthetists of Great Britain and Ireland.
Department of Anaesthesia and Intensive Care, Tuen Mun Hospital, Hong Kong Special Administrative Region, Hong Kong.
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MeSH Terms
Airway Obstruction / therapy*
Cross-Over Studies
Equipment Design
Intubation, Intratracheal / instrumentation*
Laryngoscopy / instrumentation
Time Factors
Video Recording
Comment In:
Anaesthesia. 2013 May;68(5):543-5   [PMID:  23573862 ]
Anaesthesia. 2013 May;68(5):545   [PMID:  23573865 ]
Erratum In:
Anaesthesia. 2013 May;68(5):549-50

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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