critical care medicine
How To Insert a Laryngeal Mask Airway
Relevant Anatomy for Laryngeal Mask Airway Insertion
Aligning the ear with the sternal notch may help open the upper airway and establishes the best position to view the airway if endotracheal intubation becomes necessary. The degree of head elevation that best aligns the ear and sternal notch varies (eg, none in children because in children the occiput is relatively large, but a large degree in patients with obesity). 