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RUSSELL H. WILSON, M.D.; CRAIG W. BORDEN, M.D.; RICHARD V. EBERT, M.D.

AMA Arch Intern Med. 1951;88(5):581-590.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

FOR MANY years there has been an intense interest in the adaptation of human beings to residence at high altitude. Numerous studies have been made of permanent residents of a mining district in Peru, where the altitude is 10,000 to 15,000 ft. (3,048 to 4,572 meters) above sea level. Residents of high altitude usually exhibit an increase in the hemoglobin content of the blood.¹ Moreover, with increasing altitude, and hence increasing anoxia, the elevation of the hemoglobin content of the blood becomes more marked. Anoxia also causes an increase in ventilation, with a resultant decline of the carbon dioxide tension in the alveoli and arterial blood.² The lowered carbon dioxide tension in the blood is compensated for by a decrease in bicarbonate, so that the blood pH remains normal.³ There has been some disagreement on the effect of high altitude on cardiac output, but apparently the changes . . . [Full Text PDF of this Article]

Author Affiliations
MINNEAPOLIS

From the Veterans Administration Hospital, Minneapolis, and the Department of Medicine, The Medical School, University of Minnesota.

Footnotes
Sponsored by the Veterans Administration and published with the approval of the Chief Medical Director. The statements and conclusions published by the authors are the result of their own study and do not necessarily reflect the opinion or policy of the Veterans Administration.

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