This prospective observational study aims to evaluate whether upper airway ultrasound measurements can improve the prediction of difficult airway compared with conventional anthropometric assessments. Adult patients undergoing elective procedures requiring airway management will be included. Ultrasound parameters such as tongue thickness, anterior neck soft tissue thickness, and hyomental distance will be measured before airway intervention. Standard clinical predictors (Mallampati score, thyromental distance, neck circumference, etc.) will also be recorded. The primary objective is to determine the diagnostic accuracy of ultrasound-based measurements in predicting difficult laryngoscopy and intubation. The study seeks to provide evidence supporting the integration of upper airway ultrasound into routine pre-anesthetic airway evaluation.
Adults aged 18-99 years
Patients scheduled for elective surgery under general anesthesia
ASA Physical Status I-III
Able to provide informed consent
- Emergency surgery cases
Age <18 years
ASA Physical Status IV-V
Pregnant or breastfeeding patients
The study population consists of adult patients (18-99 years) scheduled for elective surgery under general anesthesia at a tertiary care hospital. Participants represent typical surgical patients requiring preoperative airway assessment. No healthy volunteers will be enrolled. Only ASA I-III patients who can provide informed consent will be included.
Cohort
Prospective
Not listed
Diagnostic accuracy of ultrasound airway measurements for predicting difficult mask ventilation
Evaluation of the sensitivity, specificity, and area under the ROC curve (AUC) of ultrasound-based airway measurements-tongue thickness, hyoid-to-skin distance, and epiglottis-to-skin distance-in predicting difficult mask ventilation. These ultrasound parameters will be compared with conventional anthropometric airway assessment tests to determine their predictive performance.
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