Use of point-of-care ultrasound in predicting difficult intubations in the emergency department

Point-of-care ultrasound (POCUS) is increasingly used in airway assessment, but its role in predicting difficult intubation in the emergency department remains unclear. A short systematic review of MEDLINE and EMBASE identified four prospective observational studies that met the inclusion criteria and underwent analysis. The studies evaluated ultrasound-derived airway parameters including hyomental distance, tongue thickness and anterior neck soft tissue thickness, and correlated these measurements with Cormack-Lehane grading. Several POCUS parameters demonstrated fair to excellent diagnostic accuracy for predicting difficult laryngoscopy. However, variability in study populations, measurement techniques and diagnostic thresholds limits the generalisability of the findings. The bottom line is that while POCUS is promising, it should not be used alone for difficult airway assessment. Further research with larger, diverse populations is needed.