[Autoregulation of the cerebral blood flow in normo- and hypertensive rats under beta-adrenoreceptor blockade].

A disorder in the autoregulation of cerebral blood flow due to a drop of arterial blood pressure (shift to the right) occurred earlier in hypotensive rats than in normotensive ones. A beta-adrenergic blockade (obsidan) improved the autoregulation (shift to the left) in both normo- and hypertensive animals.