Spectral analysis of arterial blood pressure variability: Assessing the accuracy of the finometer device

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Abstract

In this study we appraised the accuracy of the Finometer in spectral analysis of systolic (SAP) and diastolic (DAP) arterial pressure. In 24 patients the blood pressure signal was simultaneously recorded invasively and by the Finometer and the power of SAP and DAP in the VLF (0.01÷0.04Hz), LF (0.04÷0.15Hz), and HF (0.15÷0.45Hz) bands computed. To investigate the relationship between invasive and Finometer measurements, the percentage error was computed and bivariate spectral analysis performed. The error for SAP analysis, was (%): 139, 76, -32, 75 for respectively VLF, LF, HF and total power; DAP errors were much smaller. SAP variability is greatly enhanced by the Finometer, mainly due to the increase of power in the VLF and LF bands which overrides the reduction in the HF band. Noise and nonlinearities account for <20% of the Finometer power changes, indicating that the differences are mainly due to amplification or attenuation effects.

Original languageEnglish
Title of host publicationComputers in Cardiology
EditorsA. Murray
Pages505-508
Number of pages4
Volume30
Publication statusPublished - 2003
EventComputers in Cardiology 2003 - Thessaloniki Chalkidiki, Greece
Duration: Sep 21 2003Sep 24 2003

Other

OtherComputers in Cardiology 2003
CountryGreece
CityThessaloniki Chalkidiki
Period9/21/039/24/03

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ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

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