Randomised Controlled Trial of Intubation With the McGrath Series 5 Video Laryngoscope vs the Macintosh Laryngoscope

Study Overview
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Brief Summary
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The simplicity of use and intuitive function of the McGrath video-laryngoscope suggests it may have a bigger role than as a back-up to conventional direct laryngoscopy and could possibly be the first-line laryngoscope for situations where difficult intubations are more likely or more hazardous. The incidence of difficult or failed intubation for an individual anaesthetist is related to their experience, decreasing as experience increases. The purpose of this trial is to evaluate the McGrath laryngoscope when used by relatively inexperienced anaesthetists, who are those most likely to encounter difficulties. The null hypotheses to be tested is that there is no difference between the Macintosh and McGrath laryngoscope in terms of ease and success in intubation.

Official Title
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Randomised Controlled Trial of Intubation With the McGrath Series 5 Video Laryngoscope vs the Macintosh Laryngoscope

Conditions
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Tracheal Intubation

Intervention / Treatment
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* Device: McGrath
* Device: Tracheal intubation using Macintosh Laryngoscope


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adults (18 years and over) scheduled for elective surgery whose anaesthetic plan would normally include oral intubation using a Macintosh laryngoscope blade after induction of general anaesthesia and who have given valid informed consent. Exclusion Criteria: Patients requiring special techniques for intubation such as rapid sequence induction Adults who have learning difficulties Are unconscious or very severely ill Have a terminal illness; are in an emergency situation Have a mental illness Have dementia Prisoners Those who could be considered to have a particularly dependent relationship with the investigator and other vulnerable groups.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Intubation c McGrath videolaryngoscope<br>Tracheal Intubation using McGrath video-laryngoscope | Device: McGrath<br>* Tracheal intubation, using Mcgrath video-laryngoscope<br>* Other names: Aircraft Medical McGrath Series 5 Video Laryngoscope;|
| Active Comparator: Intubation using Macintosh Laryngoscope<br>Tracheal intubation using Macintosh Laryngoscope | Device: Tracheal intubation using Macintosh Laryngoscope<br>* Tracheal intubation using Macintosh Laryngoscope<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intubation Time | Time from anaesthetist picking up laryngoscope until 1st upward capnograph deflection after intubation | At intubation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Difference in Learning to Use the Scopes | Is there a difference between trainee anaesthetists in learning to use the scopes | At analysis | 
| Quality of View of the Vocal Cords |  | At analysis | 
| Number of Attempts to Secure Successful Intubation | Is there a difference in the number of attempts required to secure successful intubation ? | At analysis | 
| Incidence of Initial Oesophageal Intubation |  | At analysis | 
| Number of Intubations Taking More Than 70 Seconds |  | At Analysis | 
| Incidence of Low Arterial Saturation During Intubation |  | At analysis | 
| Incidence of Visible Trauma to the Airway |  | At analysis | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Tracheal intubation, Laryngoscopy, videolaryngoscope, McGrath, success, time