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Stroke, Vol 12, 640-642, Copyright © 1981 by American Heart Association

ARTICLES

Cerebral autoregulation: an in vitro study

PE Vinall and FA Simeone

Cerebral autoregulation can be duplicated in vitro using the large middle cerebral arteries from a calf. The limits of autoregulation were between 50 and 150 mm Hg. Excessively high pressures may lead to the appearance of the "sausage- or bead-string" response followed by forced dilation. These results suggest the existence of an intrinsic myogenic mechanism responsive to intraluminal pressure changes.

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