The Depth of Endotracheal Tube Insertion

Study Overview
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Brief Summary
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The investigators suppose that direct laryngoscopy is connected with deeper insertion of endotracheal tube in comparison to videolaryngoscopy. Correction of this malposition can cause postoperative discomfort and further complications in some patients.Routine use of videolaryngoscopy could minimize these problems.

Detailed Description
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100 patients scheduled for elective neurosurgical procedures will be randomized into two groups. Patients in group A will be intubated by videolaryngoscopy (GlideScope), patients in group B by direct laryngoscopy, in both groups will be rigid stylet used. Intubation will be done under propofol anesthesia, targeted entropy 40 to 50, and deep relaxation (neuromuscular transmission target level 0). Sufentanil will be used to block tracheal reflexes. In both groups the depth of insertion of tracheal tube will be measured in the mouth corner immediately after intubation. Next day, the unpleasant sensations and complications will be recorded (sore throat, stridor, hoarseness, cough and nausea and vomiting) during control visit of patients.

Official Title
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The Depth of Endotracheal Tube Insertion - Use of Direct Laryngoscopy and Videolaryngoscopy (GlideScope), Comparison of Methods

Conditions
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Intubation Complication

Intervention / Treatment
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* Device: GlideScope
* Device: Direct laryngoscopy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: American Society of Anesthesiologists physical status I - III Exclusion Criteria: postoperative ventilation, laryngeal tumors, conditions after tracheotomy or laryngeal operations, cervical spinal hernia extraction

Ages Eligible for Study
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Minimum Age: 18 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: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Interventional group will be intubated by videolaryngoscopy, control group by direct laryngoscopy
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: GlideScope<br>intubation with GlideScope | Device: GlideScope<br>* videolaryngoscopy (GlideScope) will be used for intubation<br>|
| Active Comparator: Direct laryngoscopy<br>intubation with laryngoscope | Device: Direct laryngoscopy<br>* direct laryngoscopy will be used for intubation<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the depth of primary insertion of tracheal tube | cm | in a minute after intubation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| sums of manipulation with tracheal tube | number | 2 minutes after intubation | 
| complications after intubation | number | 24 hours after surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Videolaryngoscopy (GlideScope), Direct laryngoscopy