Fingers Hook Technique to Facilitate Nasotracheal Intubation

Study Overview
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Brief Summary
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to compare either using conventional jaw thrust technique or with a novel fingers-hook technique to facilitate video-stylet assisted nasotracheal intubation

Detailed Description
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It is necessary to adequately exposure of glottis during naso-tracheal intubation using video-stylet. However, inadequate upward epiglottis or over-elevation of arytenoids all inhibit the tube tip smoothly into trachea. Therefore, the study is to investigate either jaw thrust or fingers-hook technique is advantages of nasotracheal intubation.

Official Title
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Tube-Videostylet Assembly for Nasotracheal Intubation Assisted by a Fingers-Hook Technique

Conditions
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Nasotracheal Intubation

Intervention / Treatment
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* Procedure: Conventional Jaw thrust Group
* Procedure: Fingers hook Group


Participation Criteria
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Eligibility Criteria
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Criteria: Inclusion Criteria: patients with American Society of Anesthesiologists physical status I-III aged 20-65 years Requiring general anesthesia undergoing oxo-maxillofacial surgery unlimited mouth open unlimited neck motion Exclusion Criteria: mouth open < 3 cm Ankylosing arthritis patients. BMI≧35 kg/m2

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 65 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: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Conventional Jaw thrust Group<br>an assembly of video-stylet and double curve endotracheal tube with conventional jaw thrust technique to facilitate nasotracheal intubation | Procedure: Conventional Jaw thrust Group<br>* a video-stylet assisted nasotracheal intubation and facilitate by conventional jaw thrust technique<br>|
| Experimental: Fingers hook Group<br>an assembly of video-stylet and double curve endotracheal tube with fingers-hook technique to facilitate nasotracheal intubation | Procedure: Fingers hook Group<br>* a video-stylet assisted nasotracheal intubation and facilitate by fingers-hook technique<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| grade of glottic field exposure and nasotracheal difficulty intubation score | to compare the two different techniques in glottic field exposure and score of nasotracheal difficulty intubations scale | half an hour | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the tube-videostylet assembly range of motion | range motion of tip of tube-videostylet assembly advanced from nasal cavity to trachea | half an hour | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Nasotracheal Intubation, jaw thrust, hook-finger