GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Jin-Tae Kim, Seoul National University Hospital
ClinicalTrials.gov Identifier:
NCT01616771
First received: April 30, 2012
Last updated: June 11, 2012
Last verified: June 2012
  Purpose

The investigators evaluated the usefulness of the Glidescope(GVL) compared with direct laryngoscopy in patients whose airway management are anticipated difficult (C&L grade ≥3) by comparing the laryngoscopic view. Also, the investigators compared the effectiveness of smaller-size blade of GVL (GVLs) with standard blade of GVL selected by patient's weight (GVLw) in the same patients.


Condition Intervention
Intubation; Difficult
Device: laryngoscopy

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade

Further study details as provided by Seoul National University Hospital:

Primary Outcome Measures:
  • The differences between the glottis view of Glidescope and that of direct laryngoscopy [ Time Frame: up to 1 day of surgery ] [ Designated as safety issue: Yes ]
    Initial laryngoscopic view was scored using Macintosh laryngoscope. Then, second laryngoscopic view was scored using GV with similar-size blade of initial Macintosh laryngoscopy.


Secondary Outcome Measures:
  • The differences between the glottis view with original-size glidescope and that with smaller-size glidescope [ Time Frame: up to 1day of surgery ] [ Designated as safety issue: Yes ]
    The last laryngoscopic view was scored using glidescope with smaller-size blade.


Enrollment: 24
Study Start Date: February 2011
Study Completion Date: January 2012
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: smaller sized GVL Device: laryngoscopy
evaluation of laryngoscopic view using 2 different sized GlideScope® videolaryngoscopy (GVL)
Other Name: GlideScope® videolaryngoscopy
Experimental: weight based sized GVL Device: laryngoscopy
evaluation of laryngoscopic view using 2 different sized GlideScope® videolaryngoscopy (GVL)
Other Name: GlideScope® videolaryngoscopy

Detailed Description:

We assumed that smaller sized GVL can slide more angulated along the tongue, so the tip of a blade can be placed more anterior and cephalad. The angle of camera would be optimized by inserting the blade further with the blade tip directed toward the larynx. This optimization may be more remarkable with smaller blade because it can be inserted with rotation. Furthermore, the location and the angle of camera are different according to GVL blade size. Considering that patient with difficult airway has hypognathia and more cephalad larynx, it may be helpful with smaller sized GVL (GVLs) rather than GVL selected by weight (GVLw) for improvement of laryngoscopic view in patients with difficult airways. We hypothesized that GVLs can provide better laryngoscopic view than GVLw and DL in patient with difficult airway.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Patients whose C&L grade were over 3 in previous anesthetic records.

Exclusion Criteria:

  • Patients with pulmonary aspiration, increased intracranial pressure, and severe cardiovascular disease
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01616771

Sponsors and Collaborators
Seoul National University Hospital
Investigators
Study Director: Jin-Tae Kim, professor Seoul National University Hospital
  More Information

No publications provided

Responsible Party: Jin-Tae Kim, professor, Seoul National University Hospital
ClinicalTrials.gov Identifier: NCT01616771     History of Changes
Other Study ID Numbers: H-1111-037-385
Study First Received: April 30, 2012
Last Updated: June 11, 2012
Health Authority: Korea: Food and Drug Administration

Keywords provided by Seoul National University Hospital:
laryngoscopes

ClinicalTrials.gov processed this record on September 22, 2014