A Comparison of the Ease of Tracheal Intubation Using a McGrath MAC Laryngoscope and a Standard MacIntosh Laryngoscope
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- NHS Tayside
- Enrollment
- 158
- Locations
- 1
- Primary Endpoint
- Intubation Difficulty Score
Study Overview
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.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- Single (Participant)
Eligibility Criteria
- Ages
- 16 Years to — (Child, Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
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.
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
Outcomes
Primary Outcomes
Intubation Difficulty Score
Time Frame: 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 Outcomes
- Time to intubation(5 minutes)
- 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)
Investigators
Dr Claire Wallace
Dr Claire Wallace SpR Anaesthetics
NHS Tayside