Editing Rapid sequence induction (section)

==== Positioning ====
Positioning involves bringing the axes of the mouth, pharynx, and larynx into alignment, leading to what's called the "sniffing" position.  The sniffing position can be achieved by placing a rolled towel underneath the head and neck, effectively extending the head and flexing the neck. You are at proper alignment when the ear is inline with the sternum.<ref>{{cite book|title=Nancy Caroline: Emergency Care in the Streets 7th Ed.|year=2013|publisher=Jones & Bartlett Learning|pages=780}}</ref>

As described by [[Brian Arthur Sellick]] in 1961, [[cricoid pressure]] (alternatively known as Sellick's maneuver) may be used to occlude the esophagus with the goal of preventing aspiration.