Comparison of Two Types of Videolaryngoscope and Direct Laryngoscope in Expected Non-difficult Airway Patients

Study Overview
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Brief Summary
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Macintosh direct laryngoscope has been mostly widely used for anesthesiologists in operation rooms or emergency situations all over the world. With rapidly development of technical devices, nowadays videolaryngoscope has become more and more popular in hospitals, for it could improve first intubation success rate and it is easier for beginners to learn. And there are many different types of videolaryngoscope for different purpose, like with or without a channel, different curvature, and so go. In this study, our aim is to study whether the videolaryngoscope which can be adjustable or not costs less intubation time and causes fewer injury in expected non-difficult airway patients by experienced anesthesiologists, compared with the classic Macintosh direct laryngoscope.

Official Title
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Comparison of Two Types of Videolaryngoscope and Direct Laryngoscope in Expected Non-difficult Airway Patients

Conditions
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Laryngoscopes

Intervention / Treatment
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* Device: The laryngoscope used for tracheal intubation under general anesthesia for patients with expected non-difficult airway conditions.


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: age between18 and 65 years ASA(American Society of anesthesiologists) I-II BMI 18-30 kg/m2 scheduled to receive elective surgery under general anesthesia with expected non-difficult airway in operation rooms. Exclusion Criteria: expected difficult airway allergy to anesthesia induction drugs scheduled to receive surgeries affecting vocalisation with high reflux aspiration risk with acute and chronic cardiac or respiratory failure with glucocorticoids medication history with mental disorder or transferred to SICU(Surgical Intensive Care Unit) or ICU after surgery who can not cooperate well with others refused or have participated in other clinical trials that may have effects on the outcomes of this study

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: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Macintosh laryngoscope<br> | Device: The laryngoscope used for tracheal intubation under general anesthesia for patients with expected non-difficult airway conditions.<br>* All the patients will receive the same anesthesia induction, and are randomized to three groups to receive different types of laryngoscope for intubation. These are the direct Macintosh laryngoscope, adjustable videolaryngoscope and nonadjustable videolaryngoscope.<br>|
| Experimental: nonadjustable videolaryngoscope<br> | Device: The laryngoscope used for tracheal intubation under general anesthesia for patients with expected non-difficult airway conditions.<br>* All the patients will receive the same anesthesia induction, and are randomized to three groups to receive different types of laryngoscope for intubation. These are the direct Macintosh laryngoscope, adjustable videolaryngoscope and nonadjustable videolaryngoscope.<br>|
| Experimental: adjustable videolaryngoscope<br> | Device: The laryngoscope used for tracheal intubation under general anesthesia for patients with expected non-difficult airway conditions.<br>* All the patients will receive the same anesthesia induction, and are randomized to three groups to receive different types of laryngoscope for intubation. These are the direct Macintosh laryngoscope, adjustable videolaryngoscope and nonadjustable videolaryngoscope.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Tracheal intubation time | total time to successful orotracheal intubation | time from the removal of the patient's face mask for preoxygenation to confirmation of good tube position based on continuous positive end-tidal carbon dioxide reading (at least three breaths without a significant visual decrease in capnography). | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Visual laryngoscope, Direct laryngoscope, Tracheal intubation time