Long Endotracheal Tube vs. Aintree Intubating Catheter for Fiberoptic-guided Intubation in Manikin

Study Overview
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Brief Summary
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In difficult airway situation, fiberoptic-guided endotracheal intubation through laryngeal mask airway(LMA) is one of option. Aintree catheter is a device to help change LMA to endotracheal tube, but it needs complex and multiple process. Long endotracheal tube can solve this problem of Aintree catheter. The purpose of this study is proving the efficacy of long endotracheal tube compared to Aintree cathter in fiberoptic-guided intubation through LMA.

Detailed Description
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In difficult aiway situation, fiberoptic-guided endotracheal intubation through laryngeal mask airway(LMA) is one of option according to Difficult intubation guidelines. First, insert LMA and insert fiberoptic through LMA. Second, insert endotracheal tube using fiberoptic as a guide. This process has several problem. Removal of LMA is impossible, so there is a risk of dislodging of endotracheal tube. Aintree catheter is developed to this problem. Insert Aintree catheter through LMA using fiberoptic, and remove LMA, finally insert endotracheal tube throug Aintree catheter. But the problem of this method is that the whole process is complex and takes long time. And there is a risk of impeding of endotracheal tube at glottis level because the difference of diameters between endotracheal tube and aintree catheter. Long endotracheal tube could solve the problems mentioned above. Through LMA, insert endotracheal tube using fiberoptic as a guide. Tube is long enough to remove LMA without a risk of dislodging. And after removal of LMA, tube can be cut for optimizing length. So the purpose of this study is comparing the efficacy of Aintree catheter method and Long tube method in manikin.

Official Title
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Fiberoptic-guided Endotracheal Intubation Through Laryngeal Mask Airway in Manikin; Long Endotracheal Tube vs. Aintree Intubating Catheter

Conditions
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Intubation;Difficult

Intervention / Treatment
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* Device: Using long tube
* Device: Aintree catheter


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Residents of Anesthesiology Who has less than 10 times of experience of fiberoptic intubation Exclusion Criteria: Who has more than 10 times of experience of fiberoptic intubation Who deny participating in the study

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 40 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: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Interventional Model Description: Manikin model Intubators are residents of Anesthesiology
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Aintree catheter<br>Fiberoptic-guided intubation through LMA, using Aintree catheter | Device: Aintree catheter<br>* Fiberoptic-guided intubation through LMA, using Aintree catheter<br>|
| Experimental: Long tube<br>Fiberoptic-guided intubation through LMA, using long tube | Device: Using long tube<br>* Fiberoptic-guided intubation through LMA, using long tube<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intubation time | from entry of fiberoptic at LMA to Ambu bagging | 3 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Success rate | Failure is esophageal intubation or disloding of endotracheal tube in any process | 5 minutes | 
| Difficulty score | Subjective score using numeric rating scale (1; extremely easy - 10; extremely difficult) | 5 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Aintree, intubation, Laryngeal mask airway, fiberoptic