It comes complete with LIFE-O2® 6&12 LPM "NORM" & "HIGH" regulator, which provides 15+ minute supply of emergency oxygen. The aluminum cylinder is disposable/replaceable (or refillable).

It might seem counterintuitive, Kheir says, that a shot of oxygen would make a difference in a vast system that circulates, in adults, about 200 milliliters of consumed oxygen per minute.

Hypoxemia is the most common complication of emergency endotracheal ... sized nasal cannulas using an NHF system. The primary endpoint was defined by oxygen saturation dropping to 90% or less.