Technique Using Trachway to Safely Navigate Endotracheal Tube Through Nasal Cavity

Study Overview
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Brief Summary
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To investigate the double curve endotracheal tube safely navigate through nasal cavity under guidance of a video-stylet.

Detailed Description
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we enrolled consecutive patients undergoing oxo-maxillofacial surgery by using video-stylet to establish airway and realize the tube angle changes while advancement, however, patients who did not inform or refuse to enroll into the study still use the video-stylet establish airway. the technique to use videostylet-tube assembly to establish airway is a commonly clinical practice in our hospital. In general, the endotracheal tube goes through nasal cavity blindly either assist with traditional laryngoscope or video-laryngoscope. Tube advances through selected nasal cavity by using a video-stylet is able to prevent from damages of the abnormal turbinates and tissue mucosa. In addition, we are able to record the stylet angle into nostril, shift axis angle in nasal cavity to prevent orifice and side hole from damaging tissues while tube-stylet assembly advancement, and the angle ranges from initiate intubation to tube advanced into trachea. the selected nostril is determined by Otolaryngologist who is not aware of the study.

Official Title
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Kaohsiung Medical University Chung-Ho Memorial Hospital

Conditions
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Nasotracheal Intubation

Intervention / Treatment
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* Device: video-stylet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients undergo regular operation of oro-maxillofacial surgery Exclusion Criteria: easily nasal bleeding, mouth limited (opening mouth < 3cm), hypertension, diabetes, chronic sinusitis with operative history, patients unwilling to be included.

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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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| video-stylet tube assembly<br>patients who undergo oxo-maxillofacial surgery with nasotracheal intubation general anesthesia are recruited | Device: video-stylet<br>* recording each video-stylet endotracheal tube assembly advanced through the selected nasal cavity<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| assessment nasal cavity and nasopharyngeal tissues damages | using video-stylet to safely navigate through selected nasal cavity and advancement into trachea | 5-10 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| video-stylet forward trend and angle changes during intubation | put tube-stylet assembly into selected nostril needs change the vectors while advancement | 5-10 minutes | 
| postoperative nasal damages | measurement of nasal bleeding and nasal congestion and nasal pain | 24 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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nasotracheal intubation, video-stylet, nasal cavity injury