Identification of Airway Structures Necessary for Airway Access Via the Skin

Study Overview
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Brief Summary
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Literature shows that anaesthetists have a low success-rate when trying to access the airway percutaneously in case of failed ventilation and intubation. The study will investigate anaesthetists ability to locate the trachea and the thyroid cartilage and the cricoid cartilage in patients, using different methods including application of ultrasonography.

Detailed Description
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Literature shows that anaesthetists have a low success-rate when trying to access the airway percutaneously in case of failed ventilation and intubation. The researchers will investigate anaesthetists ability to locate the trachea and the thyroid cartilage and the cricoid cartilage of a healthy subject with different methods including application of ultrasonography.

Official Title
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Identification of Airway Structures Necessary for Airway Access Via the Skin to be Used in Case of Failure to Maintain Oxygenation With Non-invasive Methods

Conditions
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Upper Airway Obstruction

Intervention / Treatment
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* Behavioral: identification of the airway by from the cranial end
* Behavioral: identification of the airway from the distal end


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Anaesthesiologist Exclusion Criteria: unvillingnes 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: Diagnostic
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Cranial horizontal<br>identification of the airway by from the cranial end. Marking of the airway, including the cricothyroid membrane, on the skin, by starting the examination from the cranial end at the level of the thyroid catilage , horizontally and thereafter moving caudally | Behavioral: identification of the airway by from the cranial end<br>* The airway is identified with inspection and imaging technique (ultrasound) by placing the ultrasound transducer over the thyroid cartilage and from there moving distally<br>|
| Active Comparator: caudal longitudinal<br>identification of the airway from the distal end. Marking of the airway, including the cricothyroid membrane, on the skin, by starting the examination caudally, and then moving cranially | Behavioral: identification of the airway from the distal end<br>* The airway is identified with inspection and imaging technique (ultrasound) by placing the ultrasound transducer over the distal trachea and moving cranially<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time to identify the structures necessary for percutaneous airway acess |  | two minutes after initiation of the attempt to identify the airway structures |