Preoperative Assessment of Difficult Laryngoscopy Using Different Videolaryngoscopes

Study Overview
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Brief Summary
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preoperative assessment of difficult airways are the subject of debate. Now, measuring the thyromental distance or evaluating the mallampati score, mandible protrusion or body mass index still not 100% specifically say anything. We compare 4 different video laryngoscopes for preoperative assessment of difficult laryngoscopy.

Detailed Description
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preoperative assessment of difficult airways are the subject of debate. Now, measuring the thyromental distance or evaluating the mallampati score, mandible protrusion or body mass index still not 100% specifically say anything. all patients were pre oxygenated with 100% oxygen with nasal canulla during the whole procedure. We administered 0.07 mgr/kg remifentanil for minimum 3 minutes and continue this infusion during the procedure. The patients airway topicalized by 10% lidocaine spray. We enroll 20 patients undergoing elective surgery. We compare 4 different video laryngoscopes for preoperative assessment of difficult laryngoscopy in the same patient. We evaluate the patient and the instructors satisfaction with the visual analogy scale and the visualization time. Demographic vary,ables and the airway characteristics of patients. We assess the cormack lehane view of these videolaryngoscopes with or without cricoid pressure. and the occurrence of gag reflex as well.

Official Title
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Awake Airway Assessment With Video Laryngoscopes

Conditions
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Assessment, Difficult Airway Intubation, Preoperative

Intervention / Treatment
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* Device: airtraq
* Device: mcgrath mac x-blade
* Device: storz c-mac
* Device: storz d-blade


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria:- > 18 years or <60 years of age, body mass index < 30 no difficult airway history or predictor, no respiratory tract infections for ten days, Exclusion Criteria: BMI > 35, < 18 or > 60 years of age, expected difficult airway, pregnant -

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 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: Diagnostic
Allocation: Randomized
Intervention Model: Sequential Assignment
Interventional Model Description: We used these 4 video laryngoscopes ( c-mac, d-blade, macgrath mac x-blade and airtraq) on the same patient.
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: satisfaction of instructor<br>visual analogy scale of the satisfaction of the instructor was recorded | Device: airtraq<br>* airtraq videolaryngoscope<br>* Other names: videolaryngoscope;Device: mcgrath mac x-blade<br>* mcgarth mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz c-mac<br>* storz c-mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz d-blade<br>* storz d-blade video laryngoscope<br>* Other names: videolaryngoscope;|
| Active Comparator: satisfaction of the patient<br>visual analogy scale of the satisfaction of the patient was recorded | Device: airtraq<br>* airtraq videolaryngoscope<br>* Other names: videolaryngoscope;Device: mcgrath mac x-blade<br>* mcgarth mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz c-mac<br>* storz c-mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz d-blade<br>* storz d-blade video laryngoscope<br>* Other names: videolaryngoscope;|
| Active Comparator: duration of view<br>duration of the visualization the vocal cords was recorded | Device: airtraq<br>* airtraq videolaryngoscope<br>* Other names: videolaryngoscope;Device: mcgrath mac x-blade<br>* mcgarth mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz c-mac<br>* storz c-mac videolaryngoscope<br>* Other names: videolaryngoscope;Device: storz d-blade<br>* storz d-blade video laryngoscope<br>* Other names: videolaryngoscope;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| satisfaction of the instructor: visual analogy scale | visual analogy scale of the satisfaction | 2 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| satisfaction of the patient: visual analogy scale | visual analogy scale of the satisfaction | 2 minutes | 
| duration view | time frame from the device enter the oral cavity till the vocal cords visualized | 10 seconds | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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airtraq, c-mac, d-blade, mcgarth mac x-blade, prediction, difficult airway