Lin HY, Tzeng IS, Hsieh YL, et al. - This study was undertaken to ascertain the usefulness of submental ultrasound parameters in distinguishing difficult airway management from easy airway management. Researchers recruited a total of 41 adult patients who had undergone elective surgery under general anesthesia with endotracheal intubation from March to December 2018. Submental ultrasound was used to assess tongue base thickness in the midsagittal plane and the distance between lingual arteries in the transverse dimension. The findings revealed that submental ultrasound is effective in predicting difficult mask ventilation but not difficult laryngoscopy.