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Figure 5-23
At time zero, the inspired gas was changed from 21% oxygen/79%
nitrous oxide to 21% oxygen/79% nitrogen. Arterial oxygen subsequently fell in association
with the outpouring of nitrous oxide. (Adapted from Sheffer L, Steffenson
JL, Birch AA: Nitrous oxide-induced diffusion hypoxia in patients breathing spontaneously.
Anesthesiology 37:436–439, 1972.)
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