Work of Breathing into Snow in the Presence versus Absence of an Artificial Air Pocket Affects Hypoxia and Hypercapnia of a Victim Covered with Avalanche Snow: A Randomized Double Blind Crossover Study
Fig 8
Airflow resistance of snow to breathing expressed as an overpressure in the breathing circuit developed at a constant flow rate of 60 L/min for no air pocket (NP) and one liter air pocket (AP) before and after completing the breathing experiment.