PAUL M. STEVENS, M.D.
To the editor: In the May 1970 issue (Ann Intern Med 72:621-626, 1970) Drs. Neff and Petty reported on the improved survival of their patients with chronic obstructive lung disease treated with continuous oxygen therapy. I was interested in seeing the beneficial results they obtained but do not agree that their data suggest that the use of long-term oxygen supplementation significantly decreases mortality of patients with severe hypoxemia and cor pulmonale. This point is of great importance since most obstructed patients with severe hypoxemia live at altitudes closer to sea level than to that of Denver.
It is generally accepted
STEVENS PM. Altitude and O2 Therapy in Chronic Lung Disease. Ann Intern Med. ;73:659–660. doi: 10.7326/0003-4819-73-4-659
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Published: Ann Intern Med. 1970;73(4):659-660.
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