Longitudinal changes in the control mechanisms for blood pressure and cerebral blood flow in Alzheimer's disease: Secondary results of a randomized controlled trial.

During an orthostatic challenge, the recovery of CBF after one minute was marginally lower for nilvadipine (96.5%) than for placebo (99.5%), while BP also appeared lower at one minute, although this did not reach statistical significance.

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There was a small reduction in VLF phase, coupled with a small increase in VLF gain, and an almost significant reduction in ARI when we studied autoregulation using spontaneous oscillations under resting conditions.

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