EFFECTS OF HYPOXIA ON PERIPHERAL VENOUS TONE IN MAN

Journal/Book: Reprinted from THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE St. LOUIS. Vol. 56 No. 6 Pages 847-853 December 1960. (Printed in the U. S. A.) (Copyright (c) 1960 by The C. V. Mosby Campany). 1960;

Abstract: *Established Investigator of the American Heart Association. **Research Fellow of the American College of Physicians. From the Hemodynamic Laboratory Cardiovascular Research Laboratories Department of Internal Medicine State University of Iowa College of Medicine Iowa City Iowa SUMMARY Venous pressure-volume curves were obtained from the forearm with subjects breathing air 11.5 and 7.5 per cent oxygen in nitrogen. There were insignificant changes in venous tone with 11.5 per cent oxygen but active venous constriction occurred regularly with the 7.5 per cent mixture. This constriction was sufficient to displace small amount.s of blood from the extremity. The change in venous tone could not be attributed to the mild hyperventilation which occurred with low oxygen breathing. . . .

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