Point of Care Ultrasound to Confirm Endotracheal Tube Cuff Position in Relationship to the Cricoid in Pediatric Population.

Airway below vocal cords until the distal end of the cricoid referred to as subglottis or infraglottis is considered to be the narrowest part of the airway. An optimal endotracheal tube (ETT) placement with cuffed ETT is to ensure the cuff position below the cricoid ring (cuff free glottis): as well have sufficient distance between ETT tip and carina. Various modalities including clinical examination, ETCO2, imaging (X-ray and ultrasound) are routinely used to verify the position and the tip of the ETT in the airway, however verification of the cuff position remains obscure.