Thyromental Height Test as a Predictor of Difficult Airway:

The Validity of the Thyromental Height Test as a Predictor of the Difficult Airway: A Prospective Comparative Study With Interincisor Distance, Thyromental Distance, Sternomental Distance & Modified Mallampati Test

Anesthesia is increasingly safe. Major complications of airway management are no more common but still the most life-threatening condition amongst anesthesia practice and even medicine. Thyromental height test (TMHT) is an objective measure of the height between the anterior borders of the mentum and thyroid cartilage, measured while the patient is lying supine with the mouth closed. This study was designed to assess the validity of the TMHT as a single objective predictor for difficult laryngoscopy and to be compared to other objective measures.

Inclusion Criteria:

• ASA physical status I & II
• Scheduled for elective surgical procedures under general anesthesia using endotracheal with conventional laryngoscopy

Exclusion Criteria:

• Patients with a body mass index >35 kg/m2.
• Patients with neuromuscular disorders, craniofacial abnormalities, and abnormal dentition.
• Patients with airway diseases e.g cancer larynx or tongue, uncooperative patients, those who will need awake intubation and patients who will undergo emergency operations.