CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 329 enrolled
Drug / intervention
Thyromental distance +9 moreother
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT06904586
NCT06904586N/ACompleted

Evaluation of Anthropometric and Ultrasonographic Measurements With Different Machine Learning Methods in Predicting Difficult Intubation: A Prospective Observational Study

Duzce University·observational·Posted Apr 1, 2025·Updated May 31, 2025

In Brief

An observational study evaluating Thyromental distance, Neck circumference, and 8 other interventions for Difficult Endotracheal Intubation and Artificial Intelligence. Completed, enrolled 329 participants across 1 site.

Detailed Summary

The assessment and management of difficult airway is of critical importance. Unsuccessful airway management leads to serious mortality and morbidity. From the beginning of the pre-anesthesia examination, 3% to 13% of patients who are considered suitable for routine airway management may be difficult to intubate. Airway assessment issues include risk assessment and airway examination (bedside and forward) to estimate the risk of difficult airway or aspiration. Airway examination aims to determine the presence of upper airway pathologies or anatomical anomalies. Some physical characteristics are associated with difficult airways and unsuccessful intubation. Examples of these are; limited neck movement, snoring, short sternomental distance, neck circumference thickness, etc. Physical characteristics can be measured with a meter or more detailed upper airway ultrasonographic measurements. In this study, researchers aimed to evaluate the anthropometric and ultrasonographic measurement values of patients who underwent preoperative airway assessment and to see the predictability of difficult intubation with artificial intelligence-supported decision support programs.

Study Details

Study Typeobservational
Allocation--
Masking--
Primary Purpose--
CountriesTurkey (Türkiye)
Collaborators--

Timeline

N/ACompletedFinished
20252026
First PostedApr 1, 2025
Enrollment StartMar 1, 2024
Primary CompletionDec 3, 2024
Study CompletionJan 31, 2025
TodayJul 2, 2026
Enrollment to primary: 9 monthsPosted 1.3 years ago

Interventions

Thyromental distanceother

Distance between the chin and thyroid cartilage with a tape measure when the patient is in a neutral position

Neck circumferenceother

Measurement of neck circumference with a tape measure when the patient is in a neutral position

Mouth opening distanceother

Distance between the upper and lower teeth at the point where the mouth opening is maximum when the patient is in a neutral position.

Distance from jawbone to hyoid bone with neck in neutral positionother

Distance from mentum to hyoid bone with neck in neutral position by ultrasonography

Distance from jawbone to hyoid bone with neck in extensionother

Ultrasound measurement of distance from mentum to hyoid bone with neck in extension

Distance between skin and tracheaother

Ultrasound measurement of distance between skin and trachea

Distance between skin and epiglottisother

Distance between skin and epiglottis measured by ultrasonography

Distance between skin and anterior commissure of vocal cord:other

Distance between skin and anterior commissure of vocal cord measured by ultrasonography

Distance between skin and hyoid boneother

Distance between skin and hyoid bone measured by ultrasonography

Maximum Tongue Thicknessother

Measurement of Maximal Tongue Thickness by Ultrasonography