Abstract
Summary
Two methods are described for recording blood volume pulses from body segments and from isolated arteries. Evidence is presented to show that an arterial volume pulse reflects vasomotor change in the vascular bed which that artery supplies peripheral to the point of measurement. Peripheral vasoconstriction and vasodilation can be demonstrated in this manner and indications of relative changes in blood flow can be abtained. With these methods hemodynamic responses to pharmacologic agents can be studied. The initial responses and subsequent adjustments can be followed.
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