LF component in systolic arterial pressure in patients with atrial fibrillation: Detection and reliability

V. D A Corino, F. Lombardi, S. Belletti, L. T. Mainardi

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

Abstract

Atrial fibrillation (AF) is a common arrhythmia characterized by desynchronization of atrial electrical activity causing a consequent irregular ventricular response. Blood pressure fluctuates in a complex mode composed of both short-term and long-term variability. In AF, the beat-to-beat variation of blood pressure is increased because of variations in filling time and in contractility. However, a few studies have analyzed short-term blood pressure variations in AF being the interest mainly addressed to 24-hour variations. We recently observed an harmonic LF component in systolic arterial pressure (SAP) in patients with persistent AF, referred for electrical cardioversion. Aim of the present study was to propose a method to verify the reliability of the LF component found in SAP series, based on the position of the poles of the autoregressive spectral decomposition in the z-plane. 75% of the LF components resulted reliable in the SAP series, whereas only 20% in the RR series. Thus, we concluded that, at variance with RR ones, SAP LF components are likely to represent true physiological oscillations.

Original languageEnglish
Title of host publicationIFMBE Proceedings
Pages837-840
Number of pages4
Volume25
Edition4
DOIs
Publication statusPublished - 2009
EventWorld Congress on Medical Physics and Biomedical Engineering: Image Processing, Biosignal Processing, Modelling and Simulation, Biomechanics - Munich, Germany
Duration: Sep 7 2009Sep 12 2009

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Image Processing, Biosignal Processing, Modelling and Simulation, Biomechanics
CountryGermany
CityMunich
Period9/7/099/12/09

Keywords

  • Arterial pressure variability
  • Autoregressive spectral analysis
  • Baroreflex mechanisms
  • Electrical cardioversion
  • Rhythmical oscillations

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'LF component in systolic arterial pressure in patients with atrial fibrillation: Detection and reliability'. Together they form a unique fingerprint.

Cite this