The Upper Lip Bite Test (ULBT) can be used to screen a patient for the risk of a difficult endotracheal intubation.
Patient selection: laryngoscopy with endotracheal intubation
Examination: relationship of the lower incisors to the upper limt
Examination
Class
Intubation
lower incisors can bite the upper lip above the vermilion line
I
not difficult
lower incisors can bite the upper lip below the vermilion line
II
intermediate
lower incisors cannot reach the upper lip
III
difficult
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Specialty: Anesthesiology, Surgery, general, Pulmonology, Cardiology, Emergency Medicine, Otolaryngology