Evaluation of McGrath® MAC Video Laryngoscope (EMMVL)

January 30, 2014 updated by: Wonhee Kim, Hanyang University

Evaluation of McGrath® MAC Using Glidescope® Ranger for Novice Providers in a Simulated Difficult Airway: A Randomised Manikin Study

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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

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 Type

Interventional

Enrollment (Actual)

39

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Korea, Republic of
    • Kyeonggi-do
      • Guri-si, Kyeonggi-do, Korea, Republic of, 471-701
        • Hanyang University Guri Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 29 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Medical students without previous experience of intubation

Exclusion Criteria:

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Intubation with 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.
Device: the McGrath® MAC video laryngoscope
Device: the GlidesScope® Ranger video laryngoscope
Device: the Macintosh laryngoscope
Experimental: Intubation with 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.
Device: the McGrath® MAC video laryngoscope
Device: the GlidesScope® Ranger video laryngoscope
Device: the Macintosh laryngoscope
Experimental: Intubation with 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.
Device: the McGrath® MAC video laryngoscope
Device: the GlidesScope® Ranger video laryngoscope
Device: the Macintosh laryngoscope

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Intubation parameter
Time Frame: 1st 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
1st intubation attempt, an expected average of 1 min
Intubation parameter
Time Frame: 2nd 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
2nd intubation attempt, an expected average of 1 min
Intubation parameter
Time Frame: 3rd 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
3rd intubation attempt, an expected average of 1 min
Intubation parameter
Time Frame: 4th 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
4th intubation attempt, an expected average of 1 min
Intubation parameter
Time Frame: 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
5th intubation attempt, an expected average of 1 min

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Hanyang University

Investigators

  • Study Director: Hyuk Joong Choi, MD, PhD, Hanyang University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2013

Primary Completion (Actual)

November 1, 2013

Study Completion (Actual)

November 1, 2013

Study Registration Dates

First Submitted

January 28, 2014

First Submitted That Met QC Criteria

January 30, 2014

First Posted (Estimate)

January 31, 2014

Study Record Updates

Last Update Posted (Estimate)

January 31, 2014

Last Update Submitted That Met QC Criteria

January 30, 2014

Last Verified

January 1, 2014

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • McGrath® MAC 1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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