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Evaluation of Clinical Airway Assessments With a Gray Zone Approach

Evaluation of Clinical Airway Assessments for Predicting Difficult Laryngoscopy Using a Gray Zone Approach

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01719848
Enrollment
200
Registered
2012-11-01
Start date
2012-08-31
Completion date
2013-07-31
Last updated
2014-04-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Difficult Laryngoscopy

Keywords

Physical examinations, Percentage of glottic opening(POGO)

Brief summary

Failure of advanced airway security has been reported that it could lead lethal complication such as brain hypoxic damage. There have been controversial reports for the airway assessment tests which can predict difficult laryngoscopy. Therefore, we evaluated diagnostic validity of pre-existing airway assessment tests and scoring system using a gray zone approach in patients undergoing general anesthesia required endotracheal intubation.

Detailed description

POGO(percentage of glottic opening)will be evaluated by an attachable fiberoptic scope (AV scope. CAREtec CO.Ltd, Kangwon-Do, South Korea)

Interventions

OTHERMeasurements of parameters related with physical examinations for difficult airway prediction

Sponsors

Samsung Medical Center
Lead SponsorOTHER

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* 20 to 80 years old patients undergoing general anesthesia for any operation.

Exclusion criteria

* previous difficult airway history * upper airway obstruction disease * congenital disorders that are known to relate with difficult airway * neurologic symptom associated with neck extension * emergent operation

Design outcomes

Primary

MeasureTime frameDescription
Percentage of glottic opening (POGO)During laryngoscopy manipulation for endotracheal intubation (average 3min after muscle relaxant is delivered)POGO image will be captured using attachable fiberoptic scope.

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 1, 2026