Causal cross-spectral analysis of heart rate and blood pressure variability for describing the impairment of the cardiovascular control in neurally mediated syncope

Luca Faes, Luca Faes, Lamberto Widesott, Maurizio Del Greco, Giandomenico Nollo, Renzo Antolini

Risultato della ricerca: Articlepeer review

27 Citazioni (Scopus)

Abstract

A causal approach to the calculation of coherence and transfer function between systolic pressure (SP) and RR interval variability was applied in eight patients and eight control subjects during prolonged tilt test for investigating the impairment of cardiovascular control related to neurally mediated syncope. The causal analysis showed a depressed baroreflex regulation in resting patients, with reduced gain and increased latency from SP to RR, and a drop of the baroreflex coupling immediately before syncope. These findings, which were not elicited by traditional cross-spectral analysis, strongly suggest the use of the causal approach for the study of syncope mechanisms. © 2006 IEEE.
Lingua originaleEnglish
pagine (da-a)65-73
Numero di pagine9
RivistaIEEE Transactions on Biomedical Engineering
Volume53
Stato di pubblicazionePublished - 2006

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

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