Evaluation of Clinical Airway Assessments With a Gray Zone Approach
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.
Other: Measurements of parameters related with physical examinations for difficult airway prediction
|Study Design:||Observational Model: Case-Only
Time Perspective: Prospective
|Official Title:||Evaluation of Clinical Airway Assessments for Predicting Difficult Laryngoscopy Using a Gray Zone Approach|
- Percentage of glottic opening (POGO) [ Time Frame: During laryngoscopy manipulation for endotracheal intubation (average 3min after muscle relaxant is delivered) ] [ Designated as safety issue: Yes ]POGO image will be captured using attachable fiberoptic scope.
|Study Start Date:||August 2012|
|Study Completion Date:||July 2013|
|Primary Completion Date:||July 2013 (Final data collection date for primary outcome measure)|
Preoperative airway examination
patients undergoing general anesthesia for any surgery
|Other: Measurements of parameters related with physical examinations for difficult airway prediction|
POGO(percentage of glottic opening)will be evaluated by an attachable fiberoptic scope (AV scope. CAREtec CO.Ltd, Kangwon-Do, South Korea)