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

Roberto Maestri; G. D. Pinna; E. Gobbi; E. Robbi; M. T. La Rovere

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

Roberto Maestri, G. D. Pinna, E. Gobbi, E. Robbi, M. T. La Rovere

Istituti Clinici Scientifici Maugeri Spa – Società Benefit

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 language	English
Title of host publication	Computers in Cardiology
Editors	A. Murray
Pages	505-508
Number of pages	4
Volume	30
Publication status	Published - 2003
Event	Computers in Cardiology 2003 - Thessaloniki Chalkidiki, Greece Duration: Sep 21 2003 → Sep 24 2003

Other

Other	Computers in Cardiology 2003
Country	Greece
City	Thessaloniki Chalkidiki
Period	9/21/03 → 9/24/03

ASJC Scopus subject areas

Software
Cardiology and Cardiovascular Medicine

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title = "Spectral analysis of arterial blood pressure variability: Assessing the accuracy of the finometer device",

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.",

author = "Roberto Maestri and Pinna, {G. D.} and E. Gobbi and E. Robbi and {La Rovere}, {M. T.}",

year = "2003",

language = "English",

volume = "30",

pages = "505--508",

editor = "A. Murray",

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note = "Computers in Cardiology 2003 ; Conference date: 21-09-2003 Through 24-09-2003",

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T2 - Computers in Cardiology 2003

AU - Maestri, Roberto

AU - Pinna, G. D.

AU - Gobbi, E.

AU - Robbi, E.

AU - La Rovere, M. T.

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

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