title: Continuous measurement of BRSI in chronic fatigue syndrome.
abstract: This paper discusses the development of a system to measure continuous cardiac baroreceptor measurement during a 45-minute 70-degree head-up tilt (HUT) of five groups of subjects suffering the following: chronic fatigue syndrome (CFS), CFS with fibromyalgia (CFS-FM), CFS with postural orthostatic tachycardia syndrome (CFS-POTS), controls with POTS (CON-POTS), and controls (CON). The duration of the test was 56-minutes, which included a five-minute supine baseline, a 45-minute HUT and a six-minute recovery period. The system was developed in LabView, and can provide a comparative time analyses of weighted BRSI averages. Baroreflex effectiveness index (BEI) was also investigated over the course of lags 0, 1 and 2 as well as an assessment of overall BEI performance between groups.
authors.affiliation: New Jersey Inst. of Technol., Newark, NJ, USA.
authors.forename: D L
authors.initials: DL
authors.lastname: Donnelly
authors.forename: R H
authors.initials: RH
authors.lastname: Rockland
authors.forename: S S
authors.initials: SS
authors.lastname: Reisman
authors.forename: K S
authors.initials: KS
authors.lastname: Quigley