Key result
Chronic hypertension is linked to a ~33% higher lower limit of cerebral autoregulation.
Why the study?
A method for computerized analysis of cerebral blood flow autoregulation using systemic ganglion-blockade combined with lower body vacuum was evaluated to improve assessment of the lower limit of autoregulation.
Can computerized curve-fitting analysis accurately assess the lower limit of cerebral blood flow autoregulation during systemic ganglion-blockade and lower body vacuum in humans?
Population
12 volunteers and 7 patients with chronic arterial hypertension
Comparison
Systemic ganglion-blockade combined with lower body vacuum vs baseline conditions
Design
Observational study with automatic computerized curve-fitting analysis
Authors
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May warrant higher BP targets in hypertensives to maintain cerebral perfusion; hypothesis-generating and requires prospective validation before clinical adoption.
Observational (n=19)
Can computerized curve-fitting analysis accurately assess the lower limit of cerebral blood flow autoregulation during systemic ganglion-blockade and lower body vacuum in humans?
Absolute Event Rate: 113% vs 85%
Computerized curve-fitting analysis during systemic ganglion-blockade and lower body vacuum is a suitable method for evaluating the lower limit of cerebral blood flow autoregulation in humans.
Schmidt et al. (1990) conducted an observational in Chronic arterial hypertension (n=19). Chronic arterial hypertension vs. Volunteers was evaluated on Lower limit of cerebral blood flow autoregulation (mm Hg). Chronic arterial hypertension was associated with a higher lower limit of cerebral blood flow autoregulation (113 +/- 7 mm Hg) compared to volunteers (85 +/- 5 mm Hg).
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