MedPath

Prediction of difficult airway in patients using a simple bedside test called thyromental height test using digital depth caliper

Not yet recruiting
Conditions
Medical and Surgical,
Registration Number
CTRI/2022/10/046337
Lead Sponsor
DrNANDINI CV
Brief Summary

Unanticipated difficult airway is a major concern for an anesthesiologist. The need to predict potentially difficult tracheal intubation with an accurate marker, even before laryngoscopy, has received more importance but with limited success .There is a need for a test, which is (a) quick and easy to perform; (b) is highly sensitive (so that majority of difficult cases can be identified); and (c) highly specific (so that false positive rate will be low when the test is used routinely). Any test devised should be easy to perform and interpret at the bedside. The TMHT is an easy-to-do and non-invasive test. The test is based on the height between the anterior border of the mentum and the thyroid cartilage .The aim of this study is to determine clinical performance and usefulness of the TMHT as a predictor of difficult intubation. Thus we plan to test the hypothesis that, decreased TMHT is associated with higher incidence of difficult laryngeal visualisation.

Detailed Description

Not available

Recruitment & Eligibility

Status
Not Yet Recruiting
Sex
All
Target Recruitment
261
Inclusion Criteria

Patients aged between 18 to 50 years and Patients with ASA- PS grade 1-2.

Exclusion Criteria
  • a) Patient refusal b) Maxillofacial and neck deformity, trauma or surgery c) Clinically anticipated difficult airway (requiring awake intubation) d) BMI >35 kg/m2.
  • e) Pregnant patients.

Study & Design

Study Type
Observational
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
To correlate Thyromental height test with ease of direct laryngeal visualization as assessed by Cormack-Lehane grading..Difficulties in visualization of the vocal cords during laryngoscopy and intubation, usually graded as Cormack &Lehane grade III and IV and classified as “difficult†| Grade I: Full view of the glottis. | Grade IIa: Partial view of the glottis is visible. | Grade IIb:Arytenoids or posterior part of the vocal cords only just visible. | Grade III: Only epiglottis is visible. | Grade IV: No glottis structures visible .
Secondary Outcome Measures
NameTimeMethod
To correlate clinically mallampati grading, sternomental distance, thyromental distance with direct laryngeal visualization as assessed by Cormack Lehane grading.2.To assess time taken for endotracheal intubation.

Trial Locations

Locations (1)

DR BR AMBEDKAR MEDICAL COLLEGE AND HOSPITAL

🇮🇳

Bangalore, KARNATAKA, India

DR BR AMBEDKAR MEDICAL COLLEGE AND HOSPITAL
🇮🇳Bangalore, KARNATAKA, India
Dr NANDINI CV
Principal investigator
9535024072
drnandinivraj@yahoo.co.in

MedPath

Empowering clinical research with data-driven insights and AI-powered tools.

© 2025 MedPath, Inc. All rights reserved.