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The effect of graded, progressive hypotension on the autoregulation of cerebral blood flow was studied in anaesthetized baboons with experimental renovascular hypertension. Graded hypotension was induced over a period of 5-6 h by the administration of increasing concentrations of halothane. In these chronically hypertensive animals cerebral blood flow remained constant until the mean arterial pressure had decreased to approximately 90 mm Hg. At mean arterial pressures of less than this value cerebral blood flow was pressure passive. At the completion of the investigation the brains were fixed by perfusion and submitted to neuropathological examination. Evidence of chronic hypertension and of ischaemic brain damage was found in every animal.
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E T MacKenzie, and
A M Harper
April 1974,
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W Fitch, and
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W Fitch, and
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W Fitch, and
J V Jones, and
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E T MacKenzie, and
A M Harper
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W Fitch, and
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E T MacKenzie, and
A M Harper
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W Fitch, and
J V Jones, and
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E T MacKenzie, and
A M Harper
April 1967,
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