Анестезия и клинические исследования
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An Observational Study for the Comparison of Upper Lip Bite Test with the Measurement of Thyromental Distance for the Prediction of Difficult Intubation

Niranjni S, Harish Kumar J, Girimurugan, Lakshmi

Aim: To compare upper lip bite test with the measurement of thyromental distance for the prediction of difficult intubation.

Objectives: To compare sensitivity, specificity, positive predictive value and negative predictive value of Upper Lip Bite Test (ULBT) with the measurement of Thyro-Mental Distance (TMD) for the prediction of difficult intubation.

Background: The Upper Lip Bite Test (ULBT) introduced in 2003 is a simple method for predicting difficult intubations. According to this test, the higher a patient can bite the upper lip with the lower incisors, the lower the risk of difficult intubation. Given the necessity for evaluation and re-evaluation of a newer predictive method, this study was conducted to compare the ULBT with another method for difficult airway prediction, the measurement of Thyromental Distance (TMD).