Evaluation of the Accuracy of the POGO Score

NCT ID: NCT03960567

Last Updated: 2019-12-27

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

40 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-05-30

Study Completion Date

2019-06-25

Brief Summary

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A classification method describing the larynx appearance during laryngoscopy accepted by all anesthetists has not been defined yet. In one study, it was shown that anesthetists mis classed the glottis image by 50%. The most commonly used classification method is the Cormack Lehane (CL) classification. This classification classifies the larynx appearance during direct laryngoscopy form 1 to 4. 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.

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

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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. A group of independent anesthesiologist 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 outcome of interest is the correct POGO score rate of the participants.

Conditions

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Intubation

Keywords

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Intubation Laryngeal view Scoring systems Larynx

Study Design

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Observational Model Type

OTHER

Study Time Perspective

PROSPECTIVE

Interventions

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Videolaryngoscopy

Patient will be intubated by using videolaryngoscope

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patients receiving general anesthesia

Exclusion Criteria

* Emergency surgery
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Diskapi Teaching and Research Hospital

OTHER

Sponsor Role lead

Responsible Party

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DILEK YAZICIOGLU

Assoc Prof

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Dilek Ünal, Assoc. Prof.

Role: PRINCIPAL_INVESTIGATOR

Netherlands: Ministry of Health, Welfare and Sports

Locations

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Dilek Ünal

Ankara, , Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

References

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Yentis SM, Lee DJ. Evaluation of an improved scoring system for the grading of direct laryngoscopy. Anaesthesia. 1998 Nov;53(11):1041-4. doi: 10.1046/j.1365-2044.1998.00605.x.

Reference Type BACKGROUND
PMID: 10023271 (View on PubMed)

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)

Roznovan VK. [Condition of oxidation-reduction processes in patients with chronic osteomyelitis of the jaw and phlegmons of the maxillofacial area in connection with surgical intervention and anesthesia]. Stomatologiia (Mosk). 1975 Jan-Feb;54(1):33-6. No abstract available. Russian.

Reference Type BACKGROUND
PMID: 1054169 (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

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POGO

Identifier Type: -

Identifier Source: org_study_id