Comparison of Intubation With Direct Laryngoscopy or Videolaryngoscopy in an Hemoptysis Simulated Situation on Human Cadaver Embalmed With Thiel's Method

Study Overview
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Brief Summary
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Our study first aims to develope a realistic cadaver model of hemoptysis based on Thiel's embalmed cadavers. Secondly, participants will intubate the hemoptysis cadaver model with (a) the direct laryngoscopy with MacIntosh blade, (b) the videolaryngoscopy with McGrath XBlade and (c) the videolaryngoscopy with McGrath XBlade and a suction advance before the optic of the camera. We hypothesis that, in simulated hemoptysis on the Thiel's embalmed cadaver, the rate of failed intubation at first try will be different depending on the laryngoscope used.

Detailed Description
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For the simulation of hemoptysis, we will need to use the Thiel's embalmed cadaver, who's realism is established, create a synthetic form of blood resembling real blood by its viscosity and color for the simulation and elaborate the dynamic interface of the simulation of hemoptysis. The quantity and way of administration of the blood through the trachea will be tested to obtain a realistic hemoptysis as seen in supraglottic. For the simulation, we will compare the efficiency of intubation, judged by the failure rate of intubation on first try, for (a) the direct laryngoscopy with MacIntosh blade, (b) the videolaryngoscopy with McGrath XBlade and (c) the videolaryngoscopy with McGrath XBlade with the suction advanced before the camera. We will also measure the time to intubation, the failure rate of intubation, the suction use and the difficulty of intubation as reported by the participants.

Official Title
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Comparison of the Success Rate of Intubation With Direct Laryngoscopy or Videolaryngoscopy in an Hemoptysis Simulated Situation on Human Cadaver Embalmed With Thiel's Method

Conditions
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Laryngoscope, Hemoptysis, Simulation, Cadaver, Intubation; Difficult or Failed

Intervention / Treatment
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* Other: direct laryngoscopy
* Other: videolaryngoscopy McGrath
* Other: videolaryngoscopy McGrath with suction


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: all wiling doctors and medical residents in the departments of anesthesiology, emergency medicine and intensive care experience with the technique of intubation using videolaryngoscopy and direct laryngoscopy. Exclusion Criteria: refusal to participate

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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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Single Group Assignment
Interventional Model Description: Each participant will performe the intubation three time using the tools provided, for the same simulation situation: (a) direct laryngoscopy, (b) videolaryngoscopy McGrath and (c) videolaryngoscopy McGrath with suction.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: participant LD<br> | Other: direct laryngoscopy<br>* Participants will intubate the hemoptysis cadaver model in simulation with direct laryngoscopy MacIntosh blade.<br>|
| Experimental: participant VL<br> | Other: videolaryngoscopy McGrath<br>* Participants will intubate the hemoptysis cadaver model in simulation with videolaryngoscopy using McGrath and the short curved blade (XBlade)<br>|
| Experimental: participant VLS<br> | Other: videolaryngoscopy McGrath with suction<br>* Participants will intubate the hemoptysis cadaver model in simulation with videolaryngoscopy using McGrath and the short curved blade (XBlade) and a suction they will advanced directly before the optic of the camera.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| failure of intubation on first try | defined as the withdrawal of the laryngoscope from the mouth | the duration of the simulation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time to intubation | from the insertion of the laryngoscope in the mouth to the inflation of the endotracheal cuff | the duration of the simulation | 
| failure in intubation | failure to intubate after three try | the duration of the simulation | 
| use of suction | document the use of suction | the duration of the simulation | 
| difficulty of intubation | as describe by the participants on a Likert scale 1 to 5 | the duration of the simulation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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videolaryngoscopy, Thiel's embalmed cadaver