Spectral analysis problems of heart rate and blood pressure fluctuations

Z. Gingl, Péter Makra, L. Rudas, É V A Zöllei, Norbert Csík

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The spectral analysis of electrocardiogram (ECG) and blood pressure fluctuations is an important tool both in medical diagnostics and in theories that endeavour to account for the complex, feedbacked patterns of control mechanisms that regulate human circulation. In the case of ECG signals, the researcher is often interested not in the morphology but in the rate of heartbeats, which means that it is not the whole signal but only a so-called RR signal, containing the distances of beats, that serves as the basis of spectral processing. This RR signal is inherently discrete and unevenly sampled, which introduces a number of methodological problems: fast Fourier transformation assumes even sampling, and this means that an artificial re-sampling (inserting new samples at equal distances) is necessary. In the case of blood pressure signals, the information is both in the amplitude itself and in the rate, consequently both an RR-like and a full recording-based treatment are usable here. In the present paper we review the different approaches to dealing with unevenly sampled ECG and blood pressure signals, including the Lomb periodogram that does not require re-sampling at all, and argue for a full recording-based treatment of blood pressure fluctuations, as it requires no peak detection and thus avoids all the artefacts that peak detection may cause.

Original languageEnglish
JournalFluctuation and Noise Letters
Volume7
Issue number2
DOIs
Publication statusPublished - Jun 2007

Fingerprint

blood pressure
heart rate
Blood Pressure
Heart Rate
Spectral Analysis
spectrum analysis
Fluctuations
electrocardiography
sampling
Resampling
recording
Periodogram
Fourier Transformation
fast Fourier transformations
Beat
artifacts
synchronism
Diagnostics
Necessary
causes

Keywords

  • Heart rate variability
  • Neurocardiological fluctuations
  • Power spectral analysis

ASJC Scopus subject areas

  • Mathematics(all)

Cite this

Spectral analysis problems of heart rate and blood pressure fluctuations. / Gingl, Z.; Makra, Péter; Rudas, L.; Zöllei, É V A; Csík, Norbert.

In: Fluctuation and Noise Letters, Vol. 7, No. 2, 06.2007.

Research output: Contribution to journalArticle

Gingl, Z. ; Makra, Péter ; Rudas, L. ; Zöllei, É V A ; Csík, Norbert. / Spectral analysis problems of heart rate and blood pressure fluctuations. In: Fluctuation and Noise Letters. 2007 ; Vol. 7, No. 2.
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