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.

Study Overview

• Status: Unknown
• Conditions: Difficult Intubation
• Intervention / Treatment: Diagnostic test: Thyromental height test

• Study Type: Observational
• Enrollment (Anticipated): 612

Contacts and Locations

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Patients, aged from 18-60 years old, with ASA physical status I & II who will undergo elective surgical procedures under general anesthesia using endotracheal intubation using conventional laryngoscopy.

Description

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.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
validity of the TMHT in prediction of difficult airway in patients undergoing general anesthesia for elective surgeries using area under ROC curve for the TMHT.	baseline (before induction of general anesthesia)
Validity of TMHT in comparison with that of Modified Mallampati test (MMT) in prediction of difficult airway by comparing area under ROC curve for both tests.	baseline (before induction of general anesthesia)

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Anticipated): February 20, 2020
• Primary Completion (Anticipated): August 20, 2020
• Study Completion (Anticipated): October 20, 2020

Study Registration Dates

• First Submitted: February 3, 2020
• First Submitted That Met QC Criteria: February 10, 2020
• First Posted (Actual): February 11, 2020

Study Record Updates

• Last Update Posted (Actual): February 11, 2020
• Last Update Submitted That Met QC Criteria: February 10, 2020
• Last Verified: February 1, 2020

More Information

Terms related to this study

• Other Study ID Numbers: MD-246-2019

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No