Document Detail

Measurement of forces applied during Macintosh direct laryngoscopy compared with GlideScope® videolaryngoscopy.
MedLine Citation:
PMID:  22352799     Owner:  NLM     Status:  MEDLINE    
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.
T Russell; S Khan; J Elman; R Katznelson; R M Cooper
Related Documents :
24320499 - Four-dimensional monte carlo simulations demonstrating how the extent of intensity-modu...
22959359 - Assessing retinal structure in complete congenital stationary night blindness and oguch...
21087269 - Photoinhibition at chilling temperatures and effects of freezing stress on cold acclima...
24817379 - How does ankle-foot orthosis stiffness affect gait in patients with lower limb salvage?
16002609 - Bioluminescent and red-fluorescent lures in a deep-sea siphonophore.
3982789 - In vivo assessment of lens transmission for blue-green light by autofluorescence measur...
19963879 - Minimally invasive localization of light source in tissue with an equidistant measurement.
11038569 - Buoyancy-driven, rapid exhumation of ultrahigh-pressure metamorphosed continental crust.
10367049 - Dichoptically cancelled motion.
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.
Department of Anesthesia, Toronto General Hospital, University of Toronto, Toronto, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Intubation, Intratracheal / methods
Laryngoscopy / methods*
Middle Aged
Oropharynx / physiology
Tongue / physiology
Treatment Outcome
Video Recording
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

Previous Document:  Headache in Carotid Artery Stenting and Angiography.
Next Document:  Engineering cellular trafficking via glycosyltransferase-programmed stereosubstitution.