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

NCT ID: NCT04244292

Last Updated: 2020-03-04

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-02-03
• Study Completion Date: 2020-03-02

Brief Summary

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

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).

Conditions

Intubation

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Videolaryngoscopy

Patient will be intubated by using videolaryngoscope

Group Type: OTHER

Videolaryngoscopy

Intervention Type: OTHER

Patient will be intubated by using videolaryngoscope

Interventions

Videolaryngoscopy

Patient will be intubated by using videolaryngoscope

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Patients receiving general anesthesia

Exclusion Criteria

• Emergency surgery-

• Minimum Eligible Age: 19 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Diskapi Teaching and Research Hospital

OTHER

Sponsor Role: lead

Responsible Party

DILEK YAZICIOGLU

Assoc Prof

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Dilek Unal

Role: PRINCIPAL_INVESTIGATOR

UNIVERSITY OF HEALTH SCIENCES DISKAPI YILDIRIM BEYAZIT TEACHING HOSPITAL

Locations

Ankara Diskapi Yildirim Beyazit Teaching and Research Hospital

Ankara, , Turkey (Türkiye)

Countries

Turkey (Türkiye)

References

Norris A, Heidegger T. Limitations of videolaryngoscopy. Br J Anaesth. 2016 Aug;117(2):148-50. doi: 10.1093/bja/aew122. Epub 2016 Jun 1. No abstract available.

Reference Type: BACKGROUND

PMID: 27251753 (View on PubMed)

Ochroch EA, Hollander JE, Kush S, Shofer FS, Levitan RM. Assessment of laryngeal view: percentage of glottic opening score vs Cormack and Lehane grading. Can J Anaesth. 1999 Oct;46(10):987-90. doi: 10.1007/BF03013137.

Reference Type: BACKGROUND

PMID: 10522589 (View on PubMed)

Cook TM. A grading system for direct laryngoscopy. Anaesthesia. 1999 May;54(5):496-7. doi: 10.1046/j.1365-2044.1999.0907f.x. No abstract available.

Reference Type: BACKGROUND

PMID: 10995154 (View on PubMed)

Other Identifiers

POGO Score

Identifier Type: -

Identifier Source: org_study_id