Compare Different Scales for Predicting a Difficult Airway
Official title: Comparison of Different Scales for The Prediction of Difficult Airway
Run by Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization · NCT07606079 · Data updated 2026-11-12
This observational study tests whether measuring modified thyromental distance and modified sternomental distance, scaled to a patient's three-finger breadth, can better predict difficult laryngoscopy or tracheal intubation in adults.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 850 (estimated) |
| Sponsor | Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization Academic / other |
| Locations | 1 site (Istanbul) |
| Status | Recruiting |
| Started | January 1, 2026 |
| Main results expected | June 30, 2026 |
| Study ends | June 30, 2026 |
| Registry record updated | May 26, 2026 |
| Trial ID | NCT07606079 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults 18 years and older who consent to participate and meet no exclusions related to neck mobility or mouth opening.
✕Probably not a fit
Patients with good airway anatomy or those not at risk may not see any benefit from these measurements.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study evaluates two airway measurements—modified thyromental distance and modified sternomental distance—scaled to each patient’s three-finger breadth, to see how well they predict difficult laryngoscopy and intubation. The study analyzes sensitivity and specificity to determine which measurement approach best identifies patients at risk. Participants are adults 18 years or older who consent to participate, with exclusions for limited neck mobility or smaller mouth opening than three fingers. The investigation is conducted at Prof. Dr. Cemil Tascioglu City Hospital in Istanbul, led by Prof. Dr. Cemil Tascioglu Education and Research Hospital Organization. No interventions beyond measurement are described, reflecting its observational design.
Why it matters
Potential benefit: If successful, clinicians may have a more accurate, simple screening method to anticipate difficult airways and improve planning.
How similar studies have gone: Previous research on airway predictors has shown mixed results; this study tests a novel scaling approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients aged 18 years and older who agreed to participate in the study Exclusion Criteria: * Patients who refused to participate in the study * Patients with limited neck mobility * Patients whose mouth opening is smaller than the width of their own three fingers
Where it's running
-
Prof. Dr. Cemil Tascioglu City Hospital
Istanbul, Turkey (Türkiye) Recruiting
Study contacts
- Principal investigator: Serap Karacalar, Professor Doctor — SBU Prof. Dr. Cemil Tascioglu City Hospital
- Study coordinator: Burak Ç Çevik, Resident Doctor
- Email: burakcagricevik@gmail.com
- Phone: +905302651095
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.