© 1967 by European Society of Cardiology
Copyright © 1967, European Society of Cardiology
Reduction in the Vasoconstriction Produced by Sympathetic Adrenergic Nerves during Reactive Hyperaemia*


From the Department of Physiology, St. Mary's Hospital Medical School, London
Beit Memorial Research Fellow.
Colombo Plan Fellow. Present address: The Department of Physiology, The Medical College, Kanpur, 2, U.P. India.
Authors' Synopsis: The intense reflex sympathetic vasoconstriction of forearm vessels induced by exposure of the parts of the body distal to the xiphisternum to pressures 60 mm Hg below atmospheric is able to reduce the reactive hyperaemia that follows a period of occlusion of the forearm circulation. Following occlusion for periods of from 15 sec to 8 min, the duration of the reactive hyperaemia, the peak flow, and the excess blood flow were reduced.
* This work was supported by research grants from the British Heart Foundation to Professor A. D. M. Greenfield and the Sir Halley Stewart Trust to P.H.F.
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