Comparison of Different Bending Mode for Double-lumen Endotracheal Tube Intubation

Study Overview
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Brief Summary
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The purpose of this study is to comparing the effects of different double-lumen endotracheal tube's bending type in tracheal intubation.

Detailed Description
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Intubation with the double-lumen endotracheal tube (DLT) remains a great challenge for anesthesiologists. Although new upper airway devices, such as GlideScope(R) videolaryngoscope, had been developed for facilitating airway management, the larger size and the complexity of DLT than single-lumen tube (SLT) makes the difficulties for DLT intubation. Therefore, the investigators designed this study to investigate the effects of different bending type of DLT in tracheal intubation.

Official Title
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Comparison of Different Bending Mode for Double-lumen Endotracheal Tube Intubation

Conditions
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Anesthesia Intubation Complications

Intervention / Treatment
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* Procedure: the DLT bending to the right
* Procedure: the DLT bending to the left


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: American Society of Anesthesiologists physical status I-III more than 18 years of age Receiving thoracic surgery with double-lumen endobronchial tube Exclusion Criteria: risk of regurgitation and pulmonary aspiration history of gastroesophageal reflux pregnancy scheduled tracheostomy and postoperative prolonged ventilation in ICU limited neck extension (< 35°) a thyromental distance less than 7 cm a sternomental distance less than 12.5 cm with the head fully extended mouth can not open

Ages Eligible for Study
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Minimum Age: 18 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: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: the DLT bending to the right<br> | Procedure: the DLT bending to the right<br>* bending the bronchial lumen of DLT 60 90 degrees in the same side with the tracheal lumen<br>* Other names: different bending mode of DLT;|
| Active Comparator: the DLT bending to the left<br> | Procedure: the DLT bending to the left<br>* bending the bronchial lumen of DLT 60 90 degree opposed to the tracheal lumen<br>* Other names: different bending mode of DLT;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Main outcome measure is the successful rate of the first intubation compared with the two bending modes of DLT |  | 12 month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the time needed to insert the DLT during the period of intubation |  | 12 months | 
| mean blood pressure (MAP) before intubation, and after intubation 1, 3,and 5 min |  | 12 months | 
| the incidence of hypoxemia during the period of intubation | Hypoxemia is defined as the SPO2 is below 90%. | 12 months | 
| the heart rate (HR) before intubation, and after intubation 1, 3,and 5 min |  | 12 months | 
| the incidence of sore throat after extubation |  | 12 months | 
| the incidence of hoarseness after extubation |  | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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left-side double lumen bronchial tube, bending type, GlideScope videolaryngoscope