Actively Recruiting

Age: 18Years - 99Years
All Genders
ID07309978

Assessment of Difficult Airway Predictors: Comparing Upper Airway Ultrasound with Conventional Body Measurements in Adults Undergoing Elective Surgery

Led by Saglik Bilimleri Universitesi Gulhane Tip Fakultesi · Updated on 2026-03-10

200

Participants Needed

1

Research Sites

74 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

Researchers are evaluating whether upper airway ultrasound measurements can better predict difficult airways compared to standard body measurements in adults undergoing planned surgeries requiring airway management. The study aims to improve pre-anesthetic airway assessments by comparing ultrasound parameters like tongue thickness and neck soft tissue thickness with traditional clinical predictors such as Mallampati score and neck circumference. This observational study is sponsored by Saglik Bilimleri Universitesi Gulhane Tip Fakultesi. Participants will have upper airway ultrasound and standard anthropometric measurements taken before anesthesia induction. No treatment or intervention is given, as this is a prospective observational study focusing on measurement and prediction accuracy. Ultrasound and clinical data will be collected within one hour before anesthesia to evaluate their diagnostic value for difficult mask ventilation. During the study, participants will undergo preoperative airway evaluations including ultrasound scans and standard clinical assessments. Researchers will measure the accuracy of ultrasound in predicting difficult laryngoscopy and intubation. The primary outcome is the diagnostic accuracy of ultrasound airway measurements taken shortly before anesthesia. The study will continue until December 2027 with adult patients aged 18 to 99 years undergoing elective procedures.

CONDITIONS

Brief Title

Assessment Of Difficult Airway Predictors: A Prospective Comparison Of Upper Airway Ultrasound And Conventional Anthropometric Measures

Who Can Participate

Age: 18Years - 99Years
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Adults aged 18-99 years
  • Scheduled for elective surgery under general anesthesia
  • ASA Physical Status I-III
  • Able to provide informed consent
  • Undergoing preoperative airway evaluation
Not Eligible

You will not qualify if you...

  • Emergency surgery cases
  • Age under 18 years
  • ASA Physical Status IV-V
  • Pregnant or breastfeeding patients
  • Limited cooperation or inability to provide consent
  • Known anatomical airway anomalies or previous major neck surgery

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

Diagnostic Evaluation

Duration - Within 1 hour before induction of anesthesia

Participants undergo preoperative airway evaluation using upper airway ultrasound and standard body measurements to predict difficult airway.

1 visit (in-person)

Trial Site Locations

Total: 1 location

1

Sağlık Bilimleri Üniversitesi

Ankara, Turkey (Türkiye)

Actively Recruiting

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How is the study designed?

Study Type

OBSERVATIONAL

Masking

N/A

Allocation

N/A

Model

N/A

Primary Purpose

N/A

Number of Arms

1

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Published Research Related To This Trial

Evaluation of ultrasound measured tongue thickness, tongue thickness-thyromental distance ratio, and skin-to-epiglottis distance in predicting unanticipated difficult laryngoscopy.

Amit Rastogi, Abhijeet Kumar Singh, Divya Srivastava...

https://pubmed.ncbi.nlm.nih.gov/40026745