MICHAEL LIPPMAN, M.D.
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To the editor: There appears to be an error of omission in the article by Levy and associates (78:213-219, 1973). The reader is led to believe that the oxygen fraction of inspired gas of the five patients with severe metabolic acidosis is that of room air, or 21% oxygen. Yet Patient J.F. had a PO2 of 144 mm Hg on admission. This would be extremely unlikely without supplemental oxygen, as 150 mm Hg ([760-47] X 0.21) would be the maximal attainable PO2 breathing room air. A healthy, young, normal individual would have great difficulty reaching this PO2, not to mention
LIPPMAN M. Correction: PO2 on O2 Therapy. Ann Intern Med. ;79:142. doi: 10.7326/0003-4819-79-1-142_2
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Published: Ann Intern Med. 1973;79(1):142.
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