The Comparison of the Success Rate of the Endotracheal Intubation Between the Stylet and the Frova With Acute Angled Videolaryngoscope

Study Overview
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Brief Summary
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The purpose of this study is to compare the effect of frova and stylet on the success rate of tracheal intubation when using a video laryngoscope.

Official Title
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The Comparison of the Success Rate of the Endotracheal Intubation Between the Stylet and the Frova With Acute Angled Videolaryngoscope

Conditions
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Anesthesia, General

Intervention / Treatment
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* Device: Frova
* Device: Stylet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. adult patients aged over 19 years who are undergoing endotracheal intubation for elective surgery. 2. Patients who have one of the predictors of difficult intubation such as Mallampati classification 3 or 4, limited the movement of the neck, body mass index less than 35 kg/m2, a distance from the tip of the chin to the thyroid cartilage of less than 6.5 cm, a interincisor distance less than 3.5 cm, inability to protrude of lower incisors over the upper incisors, or a diagnosis of obstructive sleep apnea. Exclusion Criteria: 1. Patients receiving emergency surgery 2. Pregnant women 3. Patients scheduled for oral surgery such as tonsillectomy, vocal cord surgery 4. Patients who have a history of ankylosing spondylitis or have a large tumor of 4 cm or more on the tongue and need an awake intubation 5. Patients who are at risk of vomiting due to not fasting time

Ages Eligible for Study
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Minimum Age: 19 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Frova<br>Frova will be used to facilitate the endotracheal intubation. | Device: Frova<br>* Frova will be used to facilitate the endotracheal intubation. The success rate of first attempt of intubation will be assessed.<br>|
| Active Comparator: Stylet<br>Stylet will be used to facilitate the endotracheal intubation. | Device: Stylet<br>* Stylet will be used to facilitate the endotracheal intubation. The success rate of first attempt of intubation will be assessed.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Success rate of first attempt of endotracheal intubation | The endotracheal intubation will be attempted using stylet or frova according to the randomized group. The success or failure of the attempt will be recorded. | for 10 minutes during anesthetic induction | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time for endotracheal intubation | Time will be measured from when the blades of the videolaryngoscope pass through the patient's mouth until the end-tidal CO2 is detected. | for 10 minutes during anesthetic induction |