The Action of Epinephrin in Minimal Doses Upon Blood Pressure And the Mechanism of This Effect
The Action of Epinephrin in Minimal Doses Upon Blood Pressure And the Mechanism of This Effect
Menninger, Karl A. (Karl Augustus), 1893-
The book The Action of Epinephrin in Minimal Doses Upon Blood Pressure And the Mechanism of This Effect was written by author Menninger, Karl A. (Karl Augustus), 1893- Here you can read free online of The Action of Epinephrin in Minimal Doses Upon Blood Pressure And the Mechanism of This Effect book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Action of Epinephrin in Minimal Doses Upon Blood Pressure And the Mechanism of This Effect a good or bad book?
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In 6 experiments (about 40 cases) a primary enlargement took place, beginning during the rise and continu- ing over the period of the fall in many cases. Constriction occurred in a total of only three cases, and in these only » with very large doses. Thus they may be discarded. Our conclusions then, are that the effect of adrenalin Digitized by Google Digitized by Google I 30 Injocted Intrayenously In minimal doses is to Inorease the size of the limh^ although in the isolated limhs, perfusion u...sually shows constriction of the vessels • This paradox may be explained hy one of two theories, either that the hlood flow in the limh is actually increased, due to the high systemic pressure resulting from strong contraction in other organs, or that according to the theory of Oliver & Schaefer, the pi ethysmo graph records an enlargement due to a marked constriction of the smaller vessels and an engorgement of the larger ones# To summarize the discussicn of the causation of the rise of "blood pressure with minimal doses of adrenalin, injected intravenously, we find that the Vaso-motor center and the "brain may "be of some slight aid.
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