GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade
|Intubation; Difficult||Device: Macintosh laryngoscope Device: GVL selected by weight Device: smaller sized GVL|
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
|Official Title:||GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade|
- The Differences in the Glottis View (C&L Grade) of Macintosh Laryngoscope and GVL Selected by Weight. [ Time Frame: up to 1 day of surgery ]
Glottis view was scored using C&L grade by Macintosh laryngoscope and GVL selected by weight, and compared each other.
We used modified C&L grade: grade 1, all or most of the glottic aperture was visible; grade 2a, posterior cords and cartilage visible; grade 2b, only posterior cartilage visible; grade 3a, epiglottis visible and can be lifted; grade 3b, epiglottis adherent to the posterior pharynx; and grade 4, the epiglottis could not be visualized.
For the statistical analysis, the modified C&L grade was converted to an ordinal scale; grade 1 to 1, grade 2a to 2, grade 2b to 3, grade 3a to 4, grade 3b to 5, and grade 4 to 6. Therefore, score range for the data reported in the table was between 1 and 6, with 1 representing best view and 6 representing no view.
- The Differences in the Glottis View (C&L Grade) of GVL Selected by Weight and Smaller Sized GVL [ Time Frame: up to 1day of surgery ]
Glottis view was scored using C&L grade by GVL selected by weight and smaller sized GVL, and compared each other.
Score range for the data reported in the table was between 1 and 6, with 1 representing best view and 6 representing no view.
|Study Start Date:||February 2011|
|Study Completion Date:||January 2012|
|Primary Completion Date:||January 2012 (Final data collection date for primary outcome measure)|
glottis view assessment
Glottis view assessment using Macintosh laryngoscope & GVL selected by weight & smaller sized GVL in single patient
Device: Macintosh laryngoscope
Glottis view assessment by direct visualization using Macintosh laryngoscopeDevice: GVL selected by weight
Glottis view assessment by GVL selected by weight which is usually selected first
Other Name: GlideScope® videolaryngoscopy selected by weightDevice: smaller sized GVL
Glottis view assessment by GVL which is smaller in one size than GVL selected by age
Other Name: smaller sized GlideScope® videolaryngoscopy
Please refer to this study by its ClinicalTrials.gov identifier: NCT01616771
|Study Director:||Jin-Tae Kim, professor||Seoul National University Hospital|