Abstract
Summary
A study was undertaken in dogs to determine the role of posture on regional pulmonary arterial perfusion and to establish a set of normal values for lobar blood flow in various body positions. Relative flow through each of the seven lobes was measured by in vitro tissue counting in five body positions following intravenous injection of albumin macroaggregates. In each position a definite flow gradient was found which favored the dependent lobes. Quantitative results are presented as are values for lung and lobar weights.
The technical assistance of Mrs. Mary Lee Griswold is acknowledged.
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