A Comparison of Videolaryngoscope and Direct Laryngoscope in IOP Changes, Throat Pain, IT and Hemodynamic Variables

Study Overview
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Brief Summary
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The aim of the study was to compare intraocular pressure, intubation time, throat pain and hemodynamic variables using direct or videolaryngoscopy under general anesthesia requiring endotracheal intubation

Detailed Description
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INTRODUCTION Videolaryngoscopes are the new generation devices which were introduced into the difficult intubation algorithm by the American Society of Anaesthesiologists (ASA) in 2013 (1). Videolaryngoscopes are known to be superior to traditional direct laryngoscopy in cases of difficult airway, glottic visualisation is obtained more easily and less airway trauma is seen (2). Portable videolaryngoscope which is used in difficult airways (3). There are 2, 3, and 4 numbered blades. In the light source of the blade of the videolaryngoscope, there is a camera which is connected to a video screen monitor. In addition to passing soft tissues by visualisation, the camera is helpful in defining the glottic appearance (1). There are studies which have compared the hemodynamic response and increase in IOP in intubation using direct laryngoscope and various videolaryngoscopes and airway devices . However, to the best of our knowledge there is no study comparing the effect on the increase in IOP of videolaryngoscope and direct laryngoscope. The aim of the current study was to compare IOP, hemodynamic parameters and throat pain in the use of videolaryngoscope and the direct laryngoscope.

Official Title
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A Comparison of Videolaryngoscope and Direct Laryngoscope in Intraocular Pressure Changes, Throat Pain, Intubation Time and Hemodynamic Variables

Conditions
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Intraocular Pressure, Intubation;Difficult

Intervention / Treatment
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* Procedure: direct laryngoscope
* Procedure: videolaryngoscope


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Elective Surgery under general anaesthesia Exclusion Criteria: History of Glaucoma History of hearth disease History of Alzheimer

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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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group Direct Laryngoscope<br>direct laryngoscope (macintosh laryngoscope) is used in elective surgeries with maximal duration time for two hours. Standard anaesthesia was used on group and BIS monitorisation was applied. A record was made of IOP, hemodynamic changes and oxygen saturation at 3 and 10 minutes after intubation. Throat pain was evaluated by questioning the patient at 10 minutes and 24 hours after waking from general anaesthesia. The duration of intubation was recorded as the time from the laryngoscope entering the mouth to removal with end-tidal carbon dioxide on the monitor. Macintosh laryingoscope, BIS monitoring and tonometry would be used in Group Direct Laryngoscope. | Procedure: direct laryngoscope<br>* procedure entubatıon<br>Procedure: videolaryngoscope<br> <br> |
| Experimental: Group videolaryngoscope<br>Videolaryngoscope is used in elective surgeries with maximal duration time for two hours. Standard anaesthesia was used on group and BIS monitorisation was applied. A record was made of IOP, hemodynamic changes and oxygen saturation at 3 and 10 minutes after intubation. Throat pain was evaluated by questioning the patient at 10 minutes and 24 hours after waking from general anaesthesia. The duration of intubation was recorded as the time from the laryngoscope entering the mouth to removal with end-tidal carbon dioxide on the monitor. Video laryingoscope, BIS monitoring and tonometry would be used in Group Video Laryngoscope. | Procedure: direct laryngoscope<br>* procedure entubatıon<br>Procedure: videolaryngoscope<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| High intraorbital pressure | IOP 18-22 mmHg | 1 minute | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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videolaryngoscope, intraocular pressure, Direct laryngoscope