Comparison of Different Scales for The Prediction of Difficult Airway

May 20, 2026 updated by: SERAP KARACALAR, Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization
Although many tests exist for predicting a difficult airway, the search for a test with substantially higher specificity and sensitivity is still ongoing. The aim of this study is to evaluate the specificity and sensitivity of modified thyromental distance and modified sternomental distance measurements, scaled according to the patient's own three-finger breadth, in predicting difficult laryngoscopy and difficult tracheal intubation.

Study Overview

Status

Recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

850

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Turkey (Türkiye)
      • Istanbul, Turkey (Türkiye), 34384
        • Recruiting
        • Prof. Dr. Cemil Tascioglu City Hospital
        • Contact:
        • Principal Investigator:
          • Serap Karacalar, Professor Doctor
        • Sub-Investigator:
          • Burak Ç Çevik, Resident Doctor
        • Sub-Investigator:
          • Gamze Demir, Resident Doctor
        • Sub-Investigator:
          • Betül Gözübüyük, Resident Doctor
        • Sub-Investigator:
          • Ece Özcan, Resident Doctor

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients aged 18 years and older.

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Sensitivity and specificity of patient-specific modified thyromental distance for predicting difficult intubation
Time Frame: During the 6-month study period, for each patient, the Cormack-Lehane score will be recorded when direct laryngoscopy is performed after induction of anesthesia in the perioperative period.
During the 6-month study period, for each patient, the Cormack-Lehane score will be recorded when direct laryngoscopy is performed after induction of anesthesia in the perioperative period.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization

Investigators

  • Principal Investigator: Serap Karacalar, Professor Doctor, SBU Prof. Dr. Cemil Tascioglu City Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2026

Primary Completion (Estimated)

June 30, 2026

Study Completion (Estimated)

June 30, 2026

Study Registration Dates

First Submitted

May 13, 2026

First Submitted That Met QC Criteria

May 20, 2026

First Posted (Actual)

May 26, 2026

Study Record Updates

Last Update Posted (Actual)

May 26, 2026

Last Update Submitted That Met QC Criteria

May 20, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • SBU-AVR-SK-01

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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