Indirect evidence for respiratory influences capable of changing RR interval independently of baroreflex

A. Porta, S. Bonizzato, P. Pizzinelli, C. Ferreri, F. Iellamo, G. Ferretti, D. Lucini, M. Pagani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Positive phase values between cardiac cycle duration and systolic arterial pressure at respiratory rate are usually found in human subjects in supine position. Under the assumption that heart period lags behind systolic arterial pressure at negative phase values, positive phase values are traditionally interpreted as an indirect evidence of the presence of the feed-forward arm (from cardiac cycle duration to systolic arterial pressure). We propose to interpret the positive phase values between cardiac cycle length and systolic arterial pressure at respiratory frequency as an indirect evidence of influences capable of changing cardiac cycle duration independently of baroreflex. This interpretation does not exclude the traditional one but it stresses that positive phase values can be observed even in presence of a negligible contribution of the feed-forward path.

Original languageEnglish
Title of host publicationComputers in Cardiology
EditorsA. Murray
Pages265-268
Number of pages4
Volume31
Publication statusPublished - 2004
EventComputers in Cardiology 2004 - Chicago, IL, United States
Duration: Sep 19 2004Sep 22 2004

Other

OtherComputers in Cardiology 2004
CountryUnited States
CityChicago, IL
Period9/19/049/22/04

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Software

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