Fig. 2From: Airway ultrasound to detect subglottic secretion above endotracheal tube cuffa A transverse view was obtained with the transducer placed across the anterior surface of the neck at the level of cricoid cartilage. b A cross-section of the cricoid cartilage (yellow watermark), ETT (white line) and presence of subglottic secretions (green watermark) were depictedBack to article page