Comparison of a Conventional and a Realistic Self-modified Model

Study Overview
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Brief Summary
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According to the recently published german guidelines for the prehospital airway management regular training for cricothyroidotomy is recommended. Even though participants prefer animal or cadaver trainingmodels, it is not possible to perform this comprehensive for a large number of participants due to organizational requirements like food hygiene, limited shelf-life and preparation time and expense. Therefore the investigators modified an available for purchase cricothyroidotomy trainer (the AirSim Combo X) with everyday suitable and cost-effective utensils. As a control group the investigators used a conventional simple plastic model.

Detailed Description
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Obesity is an important risk factor for a cannot intubate cannot ventilate situation. Obese patients are more likely to require a cricothyroidotomy, due to failure rates of routine airway management. Relevant landmarks can be difficult to palpate. And the greater depth of the soft tissues overlying the larynx. Due to this reasons the investigators modified the adult intubation manikin AirSim Combo X with a drunk baby diaper to simulate the neck of an obese patient. As a further modification the investigators prepared freezer bags filled with faked blood to simulate a possible bleeding. 35 medial doctors of the department of anesthesiology and 35 paramedics are going to perform two cricothyroidotomies in each model. For the one time participants use the ScalpelCric Set and for the other time participants use the ScalpelCric Set plus a speculum. Primary endpoint is the evaluation of reality of the two different manikins.

Official Title
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Evaluation and Comparison of a Modified Skalpell-Bougie-technique for Cricothyreotomie: Comparison of a Conventional and a Realistic Self-modified Model

Conditions
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Cricothyroidotomy, Difficult Airway, Obesity

Intervention / Treatment
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* Device: Scalpel Bougie technique
* Device: modified Scalpel Bougie technique


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: written informed consent german language in speaking and writing capability of giving consent Exclusion Criteria: participants unwilling or unable to give informed consent

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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| medical doctors<br> | Device: Scalpel Bougie technique<br>* ScalpelCric Set<br>Device: modified Scalpel Bougie technique<br>* ScalpelCric Set plus speculum<br>|
| paramedics<br> | Device: Scalpel Bougie technique<br>* ScalpelCric Set<br>Device: modified Scalpel Bougie technique<br>* ScalpelCric Set plus speculum<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| evaluation of realistic applicability | using Likert scale (1=very realistic, 2= realistic, 3= not very realistic, 4=unrealistic) | 12 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time from initial handling equipment to a successful placement of the tracheal cannula |  | 300 seconds |