Comparison of Direct and Video Laryngoscope During Endotracheal Intubation in Sellick and Trendelenburg Position

Study Overview
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Brief Summary
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Pulmonary aspiration during tracheal intubation for anesthesia can cause fatal respiratory complications. Takenaka's study of mannequins reported that the risk of airway contamination by reflux gastric contents could be minimized by applying a 15-degree Trendelenburg position and a Sellick position with neck extention. However, the clinical performance of tracheal intubation in this position has not been studied. Also, the difference between the effects of direct laryngoscope and video laryngoscope on tracheal intubation is not known yet. Therefore, this study aims to compare the intubation time among intubation through direct laryngoscope and video laryngoscope in the Sellick and Trendelenburg position, and intubation in the conventional sniffing position.

Official Title
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Comparison of Direct Laryngoscope and Video Laryngoscope During Endotracheal Intubation in Sellick and Trendelenburg Position to Prevent Pulmonary Aspiration

Conditions
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Intubation;Difficult

Intervention / Treatment
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* Other: Macintosh in sniffing position
* Other: Macintosh in Trendelenburg position and Sellick position
* Other: AceScope in Trendelenburg position and Sellick position


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age >= 19 years old ASA I or II Patients who need nasotracheal intubation for surgery Exclusion Criteria: Anatomical deformity in head and neck Patients who have risk of pulmonary aspiration Patients with cervical deformities or pain BMI >35

Ages Eligible for Study
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Minimum Age: 19 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: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: control group<br>intubation with direct laryngoscope in sniffing position | Other: Macintosh in sniffing position<br>* Macintosh direct intubation in sniffing position<br>|
| Experimental: direct laryngoscope in Trendelenburg and Sellick position<br>intubation with direct laryngoscope in Trendelenburg and Sellick position | Other: Macintosh in Trendelenburg position and Sellick position<br>* Macintosh direct laryngoscopic intubation in Trendelenburg position and Sellick position<br>|
| Experimental: video laryngoscope in Trendelenburg and Sellick position<br>intubation with video laryngoscope in Trendelenburg and Sellick position | Other: AceScope in Trendelenburg position and Sellick position<br>* AceScope videolaryngoscopic intubation in Trendelenburg position and Sellick position<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intubation time | from endotracheal tube pass the teeth to end-tidal CO2 appear | within 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intubation difficulty score | Intubation difficulty scale (IDS) score | within 5 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Trendelenburg position, Sellick position, pulmonary aspiration, video laryngoscope