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
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74 weeks
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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.
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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
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
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
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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.