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The mechanism of dopamine induced pulmonary hypertension Akiyuki Ohsumi 1 1Department of Anesthesiology, Kawasaki Medical School pp.1355-1360
Published Date 1988/12/15
DOI https://doi.org/10.11477/mf.1404205385
  • Abstract
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The mechanism of the increase in pulmonary artry pressure by dopamine was studied in 13 adult mon-grel dogs. Mean pulmonary artery pressure (mPAP), cardiac output (0), preload index (blood volume in the right atrium and right ventricle, PI), and central blood volume (CBV) significantly increased but pul-monary vascular resistance (PVR) showed no marked changes at various doses (5, 10, and 20 μg・kg-1・min-1) of dopamine. There was a very strong correlation between P1 and Q (r=0.95, p<0.01), but only a week correlation between PI and mPAP (r=0.47, p<0.01).No correlation was observed between mPAP and CBV or PVR.

Based on these results, the increase in mPAP after administration of dopamine is considered to be pro-duced by the increase in the venous return as indi-cated by the increase in PI, i. e. the increase in Q, and contraction of the pulmonary veins, possibly due to the direct action of dopamine per se.


Copyright © 1988, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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