A Comparison the Intubation of a Left Sided Double Lumen Tube and Uniblocker

Study Overview
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Brief Summary
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One-lung ventilation (OLV) is required for the most thoracic surgery to facilitate surgical visualization by collapsing the lung. The double-lumen tube (DLT) and Uniblocker are the commonly used device for OLV.The objective of our study was to comparison the safety and effectiveness of the intubation of the Left-sided Double-lumen Tube and the Uniblocker under the guidence of chest computed tomography (CT) image.

Detailed Description
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One-lung ventilation (OLV) is required for the most thoracic surgery to facilitate surgical visualization by collapsing the lung. The double-lumen tube (DLT) and Bronchial blockers (BBs) are the commonly used device for OLV.The objective of this study is to comparison the safety and effectiveness of the intubation of the Left-sided Double-lumen Tube and the Uniblocker under the guidence of chest computed tomography (CT) image(the operator count the number of CT slices (slice thickness is 5mm) from vocal cord slice to carina slice to calculate the distance between vocal cord and carina) then measure a distance on the DLT or Uniblocker from the upper edge of the cuff to the mouth side and made a marker on the DLT or Uniblocker.During the intubation the operator insert the DLT or Uniblocker into the trachea via video laryngoscope, after passing the glottis the DLT or Uniblocker are advanced toward the left main-stem bronchus, once the anesthesiologist see the marker on the DLT or the Uniblocker just above the vocal cord stop the insertion.

Official Title
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A Comparison the Intubation of a Left Sided Double Lumen Tube and the Uniblocker Under the Guidence of Chest Computed Tomography Image

Conditions
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Therapeutic Procedural Complication

Intervention / Treatment
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* Device: Uniblocker
* Device: Left-sided Double-lumen Tube


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adult patients undergoing left side thoracic surgery Exclusion Criteria: 1.Age>70 or <18 years 2.ASA classifications >III 3.BMI >35kg/m2 4.Modified Mallampati classification ≥III 5.Thoracic surgery within the last one month 6.Severe cardiopulmonary disease

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 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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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Uniblocker<br>The BBs have more advantages than DLT: easier insertion especially in patients with difficult airway18 and no need to exchange the tube when mechanical ventilation is required after surgery | Device: Uniblocker<br>* The BBs have more advantages than DLT: easier insertion especially in patients with difficult airway18 and no need to exchange the tube when mechanical ventilation is required after surgery.<br>|
| Experimental: Left-sided Double-lumen Tube<br>the double-lumen tube (DLT) is the most commonly used device for OLV | Device: Left-sided Double-lumen Tube<br>* the double-lumen tube (DLT) is the most commonly used device for OLV<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The incidence of the optimal position on the first attempt |  | 1 year | 
| The incidence of the injuries of bronchi and carina. |  | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The time for the intubation of Uniblocker or Left-sided Double-lumen Tube |  | 1 year | 
| The incidence of lung adequacy collapse |  | 1 year | 
| The incidence of Uniblocker displacement |  | 1 year | 
| The incidence of sore throat and hoarseness postoperative |  | 1 year |