Video-stylet for Nasotracheal Intubation in Limited Mouth Opening Patient

Study Overview
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Brief Summary
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The aim of the study is to investigate the efficiency of the Video-stylet (Trachway ®) and the fiberoptic bronchoscopy in facilitation of nasotracheal intubation in limited mouth opening patients.

Official Title
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Nasotracheal Intubation Assisted by a Video-stylet in Limited Mouth Opening Patient

Conditions
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Anesthesia Intubation Complication

Intervention / Treatment
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* Device: video-stylet
* Device: fiberoptic bronchoscope


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients with American Society of Anesthesiologists physical status I-III aged 20-65 years Requiring Nasotracheal Intubation under general anesthesia limited mouth open ,mouth open < 3 cm unlimited neck motion Exclusion Criteria: 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: fiberoptic bronchoscope<br>Experimental: fiberoptic bronchoscope fiberoptic bronchoscope is used to facilitate for nasotracheal intubation. | Device: fiberoptic bronchoscope<br> <br> * Other names: fiberscope;|
| Experimental: video-stylet<br>Experimental: video-stylet video-stylet is used to facilitate for nasotracheal intubation. | Device: video-stylet<br> <br> * Other names: The Clarus Video System;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| number of the patients with successful nasotracheal intubation and scoring modified intubation difficulty scale | Nasotracheal intubation is assisted by a video-stylet may be performed in patients undergoing Limited Mouth Opening following induction of anesthesia (fentanyl 2 micro-gram/kg, thiamylal 5 mg/kg) and is facilitated by cis-atracurium 0.2 mg/kg administration. propofol 1 mg/kg intravenously to blunt hemodynamic responses while intubation. a modified intubation difficulty scale to evaluate the difficulty of fiber-scope guided or trachway assisted nasotracheal intubation | half an hour | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time to intubate | time of Intubating the nasotracheal tube (NT) from selected nostril to trachea is continuously calculated but separately into two parts. part one: from leaving off mask ventilation (mask removal from face), to the NT tip on the nasopharynx. part two: advancing NT from nasopharynx, through vocal cord into trachea, to present of 3 end tidal carbon dioxide waveforms. | half an hour | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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fiberoptic bronchoscopy,, Video-stylet,, Nasotracheal Intubation