Different Types Of Laryngoscopes During Routine Intubation in Adult Patients

Study Overview
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Brief Summary
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C-MAC videolaryngoscope (Karl Storz, Tuttlingen, GERMANY) with its Macintosh like blade is used with standard direct laryngoscopy technique. KingsVisionTM videolaryngoscopes (KingSystems, IN, USA) have also Macintosh like single use blades that are channeled, wider and shorter than conventional Macintosh blades.We aim to compare these two laryngoscopes and Macintosh laryngoscope during routine intubation in adult patients.

Official Title
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Comparison Of C-MAC Videolaryngoscopy, Kingsvision Videolaryngoscopy and Macintosh Laryngoscopy During Routine Intubation in Adult Patients

Conditions
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Failed or Difficult Intubation

Intervention / Treatment
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* Device: laryngoscopy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 200 American Society of Anesthesiology I-III patients between 18-80 years old undergoing elective abdominal surgery and planned to be intubated orotracheally will be included in the study. Exclusion Criteria: Patients with upper respiratory problems and predicted difficult airways will be excluded from the study.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 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
Intervention Model: Single Group Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Laryngoscopy<br>Patients will be intubated by an experienced anesthesiologists. Anesthesiologist first uses Macintosh laryngoscope then KingsVision videolaryngoscope and lastly C-MAC videolaryngoscope to intubate patients. Cormack-Lehane scores, the time from the start of laryngoscopy to visualization of the vocal cords and the time from the visualization of the vocals from the successful intubation will be recorded. The success of the intubation will be assessed with bilateral chest auscultation. If visualization of the vocal cords or placing of the endotracheal tube was not successful after 60 seconds with a particular laryngoscope, it will be left out and patient will be ventilated for 1 minutes and then pass to other laryngoscopes. | Device: laryngoscopy<br> <br> * Other names: Macintosh Laryngscope (Welch Allyn,USA);|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cormack-Lehane Score | Patients will be preoxygenated with 100% oxygen for 3 minutes before the anesthesia induction. After induction when the train of four ratio reaches %0, patients will be intubated by one of three anesthesiologists with at least 10 years of experience. The anesthesiologist first will use the Macintosh laryngoscope then KingsVisionTM videolaryngoscope and lastly C-MAC videolaryngoscope to intubate the patients. The Cormack-Lehane scores observed during each laryngoscopy will be recorded | 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time | Patients will be preoxygenated with 100% oxygen for 3 minutes before the anesthesia induction. After induction when the train of four ratio reaches %0, patients will be intubated by one of three anesthesiologists with at least 10 years of experience. The anesthesiologist first will use the Macintosh laryngoscope then KingsVisionTM videolaryngoscope and lastly C-MAC videolaryngoscope to intubate the patients. The time from the start of laryngoscopy to the visualization of the vocal cords and the time from the visualization of the vocals from the successful intubation observed during each laryngoscopy will be recorded. | 5 minutes |