Ultrasonography Versus Palpation for Identification of the Cricothyroid Membrane

Study Overview
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Brief Summary
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After a structured teaching program anaesthetists are educated in identifying the cricothyroid membrane with ultrasonography. Thereafter their ability to do so is compared with their ability to do so with palpation. In an obese volunteer

Detailed Description
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After a structured teaching program anaesthetists are educated in identifying the cricothyroid membrane with ultrasonography. Thereafter their ability to do so is compared with their ability to do so with palpation. The purpose is to advise a propriety method for preanesthetic identification. In an obese volunteer

Official Title
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Ultrasonography Versus Palpation for Identification of the Cricothyroid Membrane

Conditions
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Airway Obstruction

Intervention / Treatment
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* Other: Marking the cricothyroid membrane after ultrasound
* Procedure: Marking of the cricothyroid membrane after Palpation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: BMI > 40 Female Exclusion Criteria: Age below 18

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

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: Basic Science
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: palpation<br>Marking the cricothyroid membrane after ultrasound The intervention is to mark the cricothyroid membrane in order to know exactly where it is in case that it should be needed fur emergency cricothyrotomy. The doctors mark the cricothyroid membrane with a pen after using palpation for identification. | Procedure: Marking of the cricothyroid membrane after Palpation<br>* Palpation is applied to the subjects neck in order to identify the cricothyroid membrane- subsequently the membrane is marked with a pen<br>|
| Active Comparator: ultrasound<br>Marking of the cricothyroid membrane after Palpation intervention is to mark the cricothyroid membrane in order to know exactly where it is in case that it should be needed fur emergency cricothyrotomy doctors mark the cricothyroid membrane with a pen after using ultrasonography for the identification | Other: Marking the cricothyroid membrane after ultrasound<br>* Ultrasonography is applied to the subjects neck in order to identify the cricothyroid membrane - subsequently the membrane is marked with a pen<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Frequency of correct identification of the cricothyroid membrane | The fraction of cases where the cricothyroid membrane is identified correctly | 2 min | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time to correct identification of the cricothyroid membrane | The time consumed for correct identification of the cricothyroid membrane | 2 min | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Airway Obstruction