Journal of Applied Physiology
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J Appl Physiol 42: 980-984, 1977;
8750-7587/77 $5.00
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Journal of Applied Physiology, Vol 42, Issue 6 980-984, Copyright © 1977 by American Physiological Society

ARTICLES

Atraumatic measuring of pulmonary capillary blood flow in dogs

R. E. Barrow and M. D. Shult

Pulmonary capillary blood flow (Qc) was measured by a nitrous oxide uptake technique using a capacitance-plethysmograph to measure pulmonary volume changes. One hundred and four paired Qc and total cardiac outputs (Qt) were measured in 13 normal mongrel dogs. The mean Qc was 0.101 +/- 0.020 1-min -1-kg-1 while the mean Qt, measured by dye dilution, was 0.117 +/- 0.025 1-min-1-kg-1. This technique minimizes subject trauma and provides a method for repeated pulmonary capillary blood flow determinations in acute or chronic studies.




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