Article
A common origin of the very low frequency heart rate and blood pressure variability--a new insight into an old debate.
Autonomic neuroscience : basic & clinical - 18 Mar 2002
Leor-Librach Ron J, Bobrovsky Ben-Zion, Eliash Sarah, Kaplinsky Elieser
Abstract excerpt
The purpose of this study was to assess the exact temporal and amplitude relationship between very low frequency heart rate variability waves and very low frequency blood pressure variability waves. We developed a computerized system based on a modified proportional-integral controller for the controlled increase of heart rate by isoproterenol. Heart rate and blood pressure were measured continuously in conscious...
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