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Application of the upper lip catch test for airway evaluation in edentulous patients: An observational study
Zahid Hussain Khan1, Shahriar Arbabi2, Mir Saeed Yekaninejad3
1Department of Anesthesiology and Intensive Care, Imam Khomeini Medical Center, Tehran, Iran.
Background:
Application of upper lip catch test (ULCT) for airway evaluation in edentulous patients.
Methods:
This research is an evaluation of a clinical diagnostic test in edentulous patients prior to operation. Five hundred eighty eight edentulous patients in a referral university hospital, between March 2008 and June 2011 scheduled for elective surgery under general anesthesia were enrolled. Those unable to open the mouth and those with pharyngo-laryngeal pathology were excluded. ULCT was assessed and compared with Cormack-Lehane grading as a gold standard for airway evaluation.
Results:
A high negative predictive value of 99.4% was a notable finding for the ULCT. The results also showed a high specificity (89.4%), high sensitivity (75.0%) and a high accuracy (89.3%) in a comparatively higher range for the ULCT.
Conclusion:
The ULCT proved to be a useful predictor for airway assessment in edentulous patients in this setting. Further studies are needed to reconfirm its validity in other ethnic groups.
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