Evaluation of McGrath® MAC Video Laryngoscope

Not Applicable

Completed

• Conditions: Intubation; Difficult
• Interventions: Device: the McGrath® MAC video laryngoscope; Device: the GlidesScope® Ranger video laryngoscope; Device: the Macintosh laryngoscope

• Registration Number: NCT02051400
• Lead Sponsor: Hanyang University

Brief Summary

The purpose of this study is to evaluate whether the McGrath® MAC video laryngoscope is equal or superior when compared to the Glidescope® Ranger and the Macintosh laryngoscope for novice users in a simulated airway manikin.

Detailed Description

Investigators compared two portable video laryngoscopes (the GlidesScope® Ranger (Verathon Inc, Bothell, WA, USA) and the McGrath® MAC (Aircraft Medical Ltd, Edinburgh, UK)) and a German type Macintosh metal blade with a fiberoptic light. A blade size of 4 was used on all devices. All intubations using video laryngoscopes were performed according to the manufacturers' instructions. A specialised rigid stylet (the GlideRite®) was used with the Glidescope® and a flexible plastic stylet bent with a hockey stick curvature, was used with the McGrath® MAC and the Macintosh laryngoscope. A size 7.5 endotracheal tube (Mallinckrodt™ Hi-Lo Oral/Nasal Tracheal Tube Cuffed Murphy Eye, Covidien, Ireland) was used with all the laryngoscopes.

All participants were randomly divided into 3 device groups. Each group was allowed to attempt to perform endotracheal intubation five more times using the Laerdal® Airway Management Trainer (Laerdal Medical Korea Ltd., Seoul, Korea) with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilisation setting using a neck collar.

The sequence in which the three devices were used was randomly assigned, and all participants performed the same sequence at intervals of five weeks during the study.

Study Timeline

• Study Start: 2013-09
• Primary Completion: 2013-11
• Study Completion: 2013-11
• Status Verified: 2014-01
• Study First Submitted: 2014-01-28
• Study First Submitted QC: 2014-01-30
• Last Update Submitted: 2014-01-30
• Study First Posted: 2014-01-31
• Last Update Posted: 2014-01-31

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 39

Inclusion Criteria

• Medical students without previous experience of intubation

Exclusion Criteria

• Heart, wrist, or low back disease or who were pregnant were excluded

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Intubation with the McGrath® MAC video laryngoscope	the McGrath® MAC video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with the McGrath® MAC video laryngoscope	the GlidesScope® Ranger video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with the McGrath® MAC video laryngoscope	the Macintosh laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with the GlidesScope® Ranger video laryngoscope	the McGrath® MAC video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with the GlidesScope® Ranger video laryngoscope	the GlidesScope® Ranger video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with the GlidesScope® Ranger video laryngoscope	the Macintosh laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with Macintosh laryngoscope	the McGrath® MAC video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with Macintosh laryngoscope	the GlidesScope® Ranger video laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.
Intubation with Macintosh laryngoscope	the Macintosh laryngoscope	Participants perform five intubation attempts using the airway manikin with the normal airway setting. After completing the normal airway session, the participants performed another five attempts with the neck immobilization setting using a neck collar.

Primary Outcome Measures

Name	Time	Method
Intubation parameter	5th intubation attempt, an expected average of 1 min	1. The rate for successful intubation; 2. Time to intubation; 3. The Cormack-Lehane grade at laryngoscopy

Trial Locations

Locations (1)

Hanyang University Guri Hospital; 🇰🇷 Guri-si, Kyeonggi-do, Korea, Republic of