Comparison of Lighted Stylet and GlideScope for Double-lumen Endobronchial Intubation

Study Overview
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Brief Summary
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We evaluate the GlideScope and lighted stylet for DLT intubation in terms of the intubation time, number of intubation attempts, difficulty in DLT advancement towards the glottis, postoperative sore throat and hoarseness, and hemodynamic responses during intubation in patients with predicted difficult airways.

Official Title
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Comparison of Lighted Stylet and GlideScope for Double-lumen Endobronchial Intubation in Patients With a Predicted Difficult Airway

Conditions
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Intubation;Difficult

Intervention / Treatment
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* Device: GlideScope
* Device: Lighted stylet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: adult patients undergoing thoracic surgery requiring endobronchial intubation for one-lung ventilation Exclusion Criteria: presence of sore throat and hoarseness requirements for postoperative mechanical ventilation at risk of aspiration.

Ages Eligible for Study
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Minimum Age: 20 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: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: GlideScope group<br>After the induction of anesthesia, endobronchial intubation is performed using the GlideScope. | Device: GlideScope<br>* Endobronchial intubation is performed using the GlideScope.<br>|
| Experimental: Lighted stylet group<br>After the induction of anesthesia, endobronchial intubation is performed using a lighted stylet. | Device: Lighted stylet<br>* Endobronchial intubation is performed using a lighted stylet.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intubation time taken for endobronchial intubation | Intubation time is defined as the time elapsed from picking up GlideScope or lighted stylet to confirmation of successful intubation by capnometry. | During endobronchial intubation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of intubation attempts | Total intubation attempts are counted. | During endobronchial intubation | 
| Difficulty of DLT advancement towards the glottis | It is categorised as very easy, easy, difficult, and very difficult | During endobronchial intubation | 
| Resistance to DLT insertion through the glottis | It is categorized as none, mild, and moderate | During endobronchial intubation | 
| The incidence and severity of postoperative sore throat | It is quantified by using a 100-point numerical rating scale (NRS, 0 [no pain], 100 [worst pain imaginable]). | At 1 and 24 hours after surgery | 
| The incidence and severity of postoperative hoarseness | Hoarseness is defined as a voice quality different from the preoperative voice and graded as follows: none (no hoarseness), mild (recognized by the patient), moderate (obvious to the investigator), and severe (aphonia). | At 1 and 24 hours after surgery |