Clinical trial NCT02051400: Evaluation of McGrath® MAC Video Laryngoscope
Official title: Evaluation of McGrath® MAC Using Glidescope® Ranger for Novice Providers in a Simulated Difficult Airway: A Randomised Manikin Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Intubation; Difficult
Keywords: Intubation
Laryngoscopes
Lead sponsor: Hanyang University
Sponsor class: OTHER
First posted: 2014-01-31
Enrollment: 39
Sex: ALL
Minimum age (years): 22
Maximum age (years): 33
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: BASIC_SCIENCE

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.

Eligibility criteria: Inclusion Criteria:

* Medical students without previous experience of intubation

Exclusion Criteria:

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

Primary outcomes:
measure: Intubation parameter
timeFrame: 1st intubation attempt, an expected average of 1 min
measure: Intubation parameter
timeFrame: 2nd intubation attempt, an expected average of 1 min
measure: Intubation parameter
timeFrame: 3rd intubation attempt, an expected average of 1 min
measure: Intubation parameter
timeFrame: 4th intubation attempt, an expected average of 1 min
measure: Intubation parameter
timeFrame: 5th intubation attempt, an expected average of 1 min
Secondary outcomes:
Other outcomes:
Locations:
city: Guri-si
country: Korea, Republic of
facility: Hanyang University Guri Hospital
state: Kyeonggi-do
Study officials:
affiliation: Hanyang University
name: Hyuk Joong Choi, MD, PhD
role: STUDY_DIRECTOR
References:
citation: Kim W, Choi HJ, Lim T, Kang BS. Can the new McGrath laryngoscope rival the GlideScope Ranger portable video laryngoscope? A randomized manikin study. Am J Emerg Med. 2014 Oct;32(10):1225-9. doi: 10.1016/j.ajem.2014.07.034. Epub 2014 Aug 2.