Document Detail


Measurement of forces applied during Macintosh direct laryngoscopy compared with GlideScope® videolaryngoscopy.
MedLine Citation:
PMID:  22352799     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Laryngoscopy can induce stress responses that may be harmful in susceptible patients. We directly measured the force applied to the base of the tongue as a surrogate for the stress response. Force measurements were obtained using three FlexiForce Sensors(®) (Tekscan Inc, Boston, MA, USA) attached along the concave surface of each laryngoscope blade. Twenty-four 24 adult patients of ASA physical status 1-2 were studied. After induction of anaesthesia and neuromuscular blockade, laryngoscopy and tracheal intubation was performed using either a Macintosh or a GlideScope(®) (Verathon, Bothell, WA, USA) laryngoscope. Complete data were available for 23 patients. Compared with the Macintosh, we observed lower median (IQR [range]) peak force (9 (5-13 [3-25]) N vs 20 (14-28 [4-41]) N; p = 0.0001), average force (5 (3-7 [2-19]) N vs 11 (6-16 [1-24]) N; p = 0.0003) and impulse force (98 (42-151 [26-444]) Ns vs 150 (93-207 [17-509]) Ns; p = 0.017) with the GlideScope. Our study shows that the peak lifting force on the base of the tongue during laryngoscopy is less with the GlideScope videolaryngoscope compared with the Macintosh laryngoscope.
Authors:
T Russell; S Khan; J Elman; R Katznelson; R M Cooper
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2012-02-21
Journal Detail:
Title:  Anaesthesia     Volume:  67     ISSN:  1365-2044     ISO Abbreviation:  Anaesthesia     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-05-08     Completed Date:  2012-06-25     Revised Date:  2012-10-31    
Medline Journal Info:
Nlm Unique ID:  0370524     Medline TA:  Anaesthesia     Country:  England    
Other Details:
Languages:  eng     Pagination:  626-31     Citation Subset:  AIM; IM    
Copyright Information:
Anaesthesia © 2012 The Association of Anaesthetists of Great Britain and Ireland.
Affiliation:
Department of Anesthesia, Toronto General Hospital, University of Toronto, Toronto, Canada. twainrussell@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Female
Humans
Intubation, Intratracheal / methods
Laryngoscopes*
Laryngoscopy / methods*
Male
Middle Aged
Oropharynx / physiology
Pressure
Tongue / physiology
Treatment Outcome
Video Recording
Comments/Corrections
Comment In:
Anaesthesia. 2012 Oct;67(10):1182-3; author reply 1183   [PMID:  22950408 ]

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


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