Evaluation of the Accuracy and Reliability of the Percentage of Glottic Opening Score

March 2, 2020 updated by: DILEK YAZICIOGLU, Diskapi Teaching and Research Hospital

Current classifications of the laryngeal view during laryngoscopy are criticized for being subjective.

The modified CL classification is criticized as it does not predict difficult intubation and especially grade 2 is operator dependent and partial view is not well defined. The numerical expression of the percentage of the glottic aperture (POGO = percentile of glottic opening) is another score. In this score, A POGO score of 100% accounts for full visualization of the larynx starting from anterior commissure to the posterior cartilage, while 0% indicated a complete absence of glottic opening. Previous validation studies reported on the reliability of POGO; however, accuracy was not evaluated.

The use of a standard and effective classification method will facilitate and accelerate communication between anesthetists in difficult life-threatening situations such as difficult airway / difficult intubation / difficult ventilation and contribute to patient safety. The use of common terminology can also facilitate the evaluation of the performance of intubation tools. The aim of this study was to evaluate the accuracy and intra and inter rater reliability of the POGO score

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Reviewer anesthesiologist will be asked to score still images of laryngeal views, which will be obtained from patients requiring intubation for general anesthesia, after obtaining written informed consent. The images of the larynx will be captured first with the Macintosh blade and thereafter with the D blade. An expert panel will score these images with the Cormack Lehane and POGO scores. The set of images will be prepared from patients with both difficult and normal airway anatomy. Some images in the series will be repeated to assess intra rater variability. The anesthesiologist will be asked to rate 20 images both with the CL and POGO scores. The experience of the raters in airway management, their experience with videolaryngoscopy and scoring systems used currently when documenting videolaryngoscopy and demographic data will be also obtained. The POGO scores of the participants and investigators will be compared. The primary outcome measure was the reviewer's agreement with the correct POGO scores (accuracy).

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • Ankara, Turkey, 06110
        • Ankara Diskapi Yildirim Beyazit Teaching and Research Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

• Patients receiving general anesthesia

Exclusion Criteria:

• Emergency surgery-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Videolaryngoscopy
Patient will be intubated by using videolaryngoscope
Other: Videolaryngoscopy
Patient will be intubated by using videolaryngoscope

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentile of glottic opening
Time Frame: 2 minutes after induction of anesthesia
A percentile of glottic opening score of 100% accounts for full visualization of the larynx starting from anterior commissure to the posterior cartilage, while 0% indicated a complete absence of glottic opening.
2 minutes after induction of anesthesia

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Diskapi Teaching and Research Hospital

Investigators

  • Principal Investigator: Dilek Unal, UNIVERSITY OF HEALTH SCIENCES DISKAPI YILDIRIM BEYAZIT TEACHING HOSPITAL

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 3, 2020

Primary Completion (Actual)

March 2, 2020

Study Completion (Actual)

March 2, 2020

Study Registration Dates

First Submitted

January 24, 2020

First Submitted That Met QC Criteria

January 24, 2020

First Posted (Actual)

January 28, 2020

Study Record Updates

Last Update Posted (Actual)

March 4, 2020

Last Update Submitted That Met QC Criteria

March 2, 2020

Last Verified

January 1, 2020

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • POGO Score

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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