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

NCT ID: NCT01616771

Last Updated: 2014-11-04

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 23 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2011-02-28
• Study Completion Date: 2012-01-31

Brief Summary

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.

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.

Conditions

Intubation; Difficult

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Blinding Strategy: NONE

Study Groups

glottis view assessment

Glottis view assessment using Macintosh laryngoscope \& GVL selected by weight \& smaller sized GVL in single patient

Group Type: OTHER

Macintosh laryngoscope

Intervention Type: DEVICE

Glottis view assessment by direct visualization using Macintosh laryngoscope

GVL selected by weight

Intervention Type: DEVICE

Glottis view assessment by GVL selected by weight which is usually selected first

smaller sized GVL

Intervention Type: DEVICE

Glottis view assessment by GVL which is smaller in one size than GVL selected by age

Interventions

Macintosh laryngoscope

Glottis view assessment by direct visualization using Macintosh laryngoscope

Intervention Type: DEVICE

GVL selected by weight

Glottis view assessment by GVL selected by weight which is usually selected first

Intervention Type: DEVICE

smaller sized GVL

Glottis view assessment by GVL which is smaller in one size than GVL selected by age

Intervention Type: DEVICE

Other Intervention Names

GlideScope® videolaryngoscopy selected by weight; smaller sized GlideScope® videolaryngoscopy

Eligibility 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

• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Seoul National University Hospital

OTHER

Sponsor Role: lead

Responsible Party

Jin-Tae Kim

professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Jin-Tae Kim, professor

Role: STUDY_DIRECTOR

Seoul National University Hospital

Other Identifiers

H-1111-037-385

Identifier Type: -

Identifier Source: org_study_id