Comparison of the Vocal Cord Imaging Techniques After Thyroidectomy

Study Overview
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Brief Summary
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Recurrent nerve palsy is a complication of thyroidectomy. Most surgeons want to visualize the vocal cords after tyroidectomy. The aim is to compare the direct laringoscopy, videolaringoscopy, fiberoptic laringoscopy and ultrasonography methods in terms of efficacy, duration and hemodynamic responses during the procedure.

Detailed Description
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The vocal cord will be visualised after the extubation with one of the following methods: direct laringoscopy videolaringoscopy fiberoptic laringoscopy ultrasonography The of efficacy of the method (0= not able to visualize the vocal cords, 1= the vocal cords were visualized) duration of the procedure and hemodynamic responses (heart rate, mean arterial pressure) during the procedure will be compared between the groups.

Official Title
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Comparison of the Vocal Cord Imaging Techniques After Thyroidectomy

Conditions
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Thyroid Nodule

Intervention / Treatment
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* Device: direct laringoscopy
* Device: fiberoptic nasal laringoscopy
* Device: ultrasonograph


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Benign or malignant thyroid pathology Exclusion Criteria: anticipated difficult intubation

Ages Eligible for Study
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Minimum Age: 19 Years
Maximum Age: 70 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: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: fiberoptic nasal laringoscopy<br>the vocal cords ill be visualized with fiberoptic nasal laringoscopy | Device: fiberoptic nasal laringoscopy<br>* the vocal cords will be visualized after extubation with fiberoptic nasal laringoscopy<br>* Other names: fiberoptic laryngoscopy;|
| Experimental: ultrasonography<br>the vocal cords ill be visualized with ultrasonography | Device: ultrasonograph<br>* the vocal cords will be visualized after extubation with fiberoptic ultrasonography<br>* Other names: ultrsonography;|
| Active Comparator: Direct laringoscopy<br>the vocal cords ill be visualized with direct laringoscopy | Device: direct laringoscopy<br>* the vocal cords will be visualized after extubation with direct laringoscopy<br>* Other names: direct laryngoscopy;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| visualisation of the vocal cords | the vocal cords will be examined after extubation | 1 min after extubation | 
| duration of the procedure | the duration of the vocal cord examination | 10 min after extubation | 
| mean arterial pressure | the mean arterial pressure will be measured after extubation | 10 min after extubation | 
| heart rate | the heart rate will be measured after extubation | 10 min after extubation | 
| peripheal oxygen saturation | the peripheal oxygen saturation will be measured after extubation | 10 min after extubation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| hypertention | mean arterial pressure >20% from baseline value | 5 minutes after the extubation | 
| tachycardia | heart rate >20% from baseline value | 5 minutes after the extubation | 
| laceration | blood detected on the blade/fiber optic scope, or macroscopic blood on the oral nasal mucosa | 5 minutes after the extubation | 
| teeht damage | broken teeht | 5 minutes after the extubation |