Comparison Between McGrath and Macintosh Laryngoscopes for DLT Intubation in Thoracic Surgery Patients.

Study Overview
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Brief Summary
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The goal of this RCT is to compare outcome with McGrath vs Macintosh laryngoscopes among patients undergoing thoracic surgery. The main questions it aims to answer are, Rate of successful intubation at first attempt and Time for intubation required with each device. Participants are required to sign the informed consent for, they will be placed in two groups, Group A: Macintosh (DL) Group B: McGrath (VL) Researchers will compare in Group A: Macintosh (DL) and Group B: McGrath (VL) the differences in rate of successful intubation at first attempt and time for intubation required with each device.

Official Title
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Comparison Between McGrath and Macintosh Laryngoscopes for Double-lumen Tube Intubation in Patients Undergoing Thoracic Surgery, A Prospective Randomized Controlled Trial

Conditions
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Thoracic Diseases, Thoracic Neoplasms, Thoracic Empyema

Intervention / Treatment
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* Device: MaCintosh Laryngoscope (DL)
* Device: McGrath Laryngoscope (VL)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age 18-65 years American Society of Anaesthesiologists physical status (ASA) I, II, III Elective thoracic surgery patients, requiring one lung ventilation. Exclusion Criteria: Patients requiring rapid sequence induction Patients with a structural problem in the airway on chest radiography History of difficult intubation Planned tracheostomy \ the presence of a tracheostomy Patients with a BMI >35 kg\m2. Who at risk of regurgitation\ Aspiration Anticipated Difficult Airway (Mallampati IV) Pre-existing sore throat or hoarseness, or recent respiratory infection (<15 days)

Ages Eligible for Study
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Minimum Age: 18 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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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group A<br> | Device: MaCintosh Laryngoscope (DL)<br>* A conventional Laryngoscope. It is battery powered, with a detachable MaCintosh blade that contains a light source.<br>|
| Active Comparator: Group B<br> | Device: McGrath Laryngoscope (VL)<br>* A video Laryngoscope that has a high-resolution video camera, and a light source at the cone end of the blade allowing for direct and indirect viewing of the glottis<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time required for correct placement of the Double Lumen Tube (DLT). | Time will be measured in seconds during laryngoscopy while placement of Double Lumen Tube (DLT) until appearance of end tidal carbon dioxide on capnograph. | During intervention time period | 
| Successful Intubation at first attempt. | The number of times the laryngoscope will be inserted. | immediately after Intervention. |