Spectral analysis of 24 h blood pressure recordings

Gianfranco Parati, Marco Di Rienzo, Stefano Omboni, Paolo Castiglioni, Alessandra Frattola, Giuseppe Mancia

Research output: Contribution to journalArticle

Abstract

Spectral analysis of blood pressure and heart rate signals allows overall blood pressure and heart rate variabilities to be split into their different frequency components. When used to analyze 24 h discontinuous blood pressure recordings, the low sampling frequency that characterizes these devices allows only the slow fluctuations in day and night blood pressure to be adequately described by the spectral approach. Conversely, spectral analysis of continuous blood pressure recordings provides information both on fast and slow changes in blood pressure and heart rate. Because blood pressure and heart rate powers art characterized by a 1 f distribution over the 24 h, flow fluctuations in blood preasure and heart rate contribute most importantly to 24 h variance, while faster components provide only a minor contribution. However, spectral analysis of the latter has raised considerable interest due to the possible association of these components with cardiovascular regulatory mechanisms. It is now possible to perform 24 h dynamic spectral analysis of blood pressure and heart rate on continuous blood pressure recordings obtained noninvasively by a finger pressure device.

Original languageEnglish
JournalAmerican Journal of Hypertension
Volume6
Issue number6 PART 2
Publication statusPublished - Jun 1993

Keywords

  • 24 h ambulatory blood pressure monitoring
  • blood pressure variability
  • finger pressure
  • intraarterial monitoring
  • Spectral analysis

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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