Evaluation of Clinical Airway Assessments With a Gray Zone Approach

Completed

• Conditions: Difficult Laryngoscopy
• Interventions: Other: Measurements of parameters related with physical examinations for difficult airway prediction

• Registration Number: NCT01719848
• Lead Sponsor: Samsung Medical Center

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)

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2012-08
• Study First Submitted: 2012-10-29
• Study First Submitted QC: 2012-10-30
• Study First Posted: 2012-11-01
• Primary Completion: 2013-07
• Study Completion: 2013-07
• Status Verified: 2014-04
• Last Update Submitted: 2014-04-16
• Last Update Posted: 2014-04-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

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

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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

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Preoperative airway examination	Measurements of parameters related with physical examinations for difficult airway prediction	patients undergoing general anesthesia for any surgery

Primary Outcome Measures

Name	Time	Method
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.

Trial Locations

Locations (1)

Samsung medical center; 🇰🇷 Seoul, Korea, Republic of