A Comparison of the Ease of Tracheal Intubation Using a McGrath MAC Laryngoscope and a Standard MacIntosh Laryngoscope

Not Applicable

Completed

• Conditions: Tracheal Intubation
• Interventions: Device: Laryngoscopy

• Registration Number: NCT01516164
• Lead Sponsor: NHS Tayside

Brief Summary

Videolaryngoscopes offer the potential to make tracheal intubation easier for the anaesthetist and less traumatic for the patient. This study aims to compare the intubation difficulty scores (a validated scoring system for ease of intubation) using the McGrath MAC as a videolaryngoscope, the McGrath MAC only as a direct laryngoscope (without video screen) and the MacIntosh laryngoscopes.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2012-01-19
• Study First Submitted QC: 2012-01-23
• Study First Posted: 2012-01-24
• Study Start: 2012-03
• Primary Completion: 2014-02
• Study Completion: 2014-02
• Status Verified: 2014-10
• Last Update Submitted: 2014-10-03
• Last Update Posted: 2014-10-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 158

Inclusion Criteria

• Elective procedure requiring oral tracheal tube intubation
• Over 16 years of age
• Airway assessment suggests to the anaesthetist that a standard MacIntosh laryngoscope approach to intubation would be appropriate.

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Exclusion Criteria

• Emergency procedure
• Less than 16 years of age
• Unable to consent
• Requiring Rapid Sequence Induction (a specialised anaesthetic induction technique)
• Predicted difficult intubation
• Not suitable for the standardised induction technique

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
McGrath MAC direct	Laryngoscopy	-
McGrath MAC indirect	Laryngoscopy	-
MacIntosh	Laryngoscopy	-

Primary Outcome Measures

Name	Time	Method
Intubation Difficulty Score	5 minutes	The Intubation Difficulty Scale (IDS) is a numerical score based on seven parameters. The scoring of each parameter represents a divergence from an 'ideal' condition and the total score represents a sum divergence from a zero difficulty ideal intubation. The seven parameters are number of supplementary attempts, number of supplementary operators, number and type of alternative techniques used, laryngoscopic grade, subjective lifting force, the use of external laryngeal manipulation and mobility or position of the vocal cords.

Secondary Outcome Measures

Name	Time	Method
Number and types of alternative techniques used	5 minutes
Perception of force used	5 minutes
Complications	5 minutes
Ease of intubation	5 minutes
Failure to intubate	5 minutes
Time to intubation	5 minutes

Trial Locations

Locations (1)

NHS Tayside; 🇬🇧 Tayside, United Kingdom