Journal of Applied Physiology
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J Appl Physiol 32: 152-153, 2005;
8750-7587/05 $8.00
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Normal arterial blood pH, oxygen, and carbon dioxide tensions in unanesthetized dogs

Eric O. Feigl 1 and Louis G. D'Alecy 1

1 Department of Physiology and Biophysics, University of Washington, Seattle, Washington 98195; and Department of Physiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104

Femoral artery blood samples from 30 unanesthetized unrestrained nonpanting dogs were analyzed. Average normal pH was 7.42 (sd 0.03), mean Po2 89.5 mm Hg (sd 4.4), and Pco2 36.8 mm Hg (sd 2.4). pH was determined with a glass electrode. Pco2 was measured using a Severinghaus electrode. Po2 was determined with a Clark-type polarographic polypropylene-covered electrode. Measurements were made at 39 C (normal dog rectal temperature).

blood gas; Clark electrode; Severinghaus electrode

Submitted on April 14, 1971







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