Finger volume pulse waveforms facilitate reliable assessment of heart rate variability, but not blood pressure variability or baroreflex function

BMC Cardiovascular Disorders - Tập 14 - Trang 1-8 - 2014
Jonathan R Linder1,2, Harald M Stauss3, Holly Gindes1, Gary L Pierce3, Nicholas H Von Bergen4, William G Haynes5,6, Jess G Fiedorowicz5,1,7,8
1Department of Psychiatry, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, USA
2College of Pharmacy, The University of Iowa, Iowa City, USA
3Department of Health and Human Physiology, College of Liberal Arts & Sciences, The University of Iowa, Iowa City, USA
4Department of Pediatrics, The University of Iowa, Iowa City, USA
5Department of Internal Medicine, The University of Iowa, Iowa City, USA
6Institute for Clinical and Translational Science, The University of Iowa, Iowa City, USA
7Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, USA
8200 Hawkins Drive W278GH, Iowa City, USA

Tóm tắt

We sought to determine whether heart rate variability (HRV), blood pressure (BP) variability, and baroreceptor-heart rate reflex sensitivity can be reliably assessed using finger volume pulse waveforms obtained from the commercially available EndoPAT device. Non-invasive BP (Finometer Pro as a non-invasive standard) and finger volume (EndoPAT) waveforms were recorded in 65 adults (37 ± 14 years; 60% female) and systolic BP and heart rate (HR) time series were derived after calibrating the EndoPAT signal based on systolic and diastolic BP values obtained by a sphygomomanometer. Transfer function analyses were performed to test for coherence between systolic BP and HR time series derived from the Finometer and EndoPAT devices. Time-domain HRV parameters, frequency domain HR and systolic BP variability parameters, and baroreflex sensitivity (sequence technique) were computed from Finometer- and EndoPAT-derived time series and intraclass correlation coefficients (ICC) were calculated. Squared coherence between systolic BP time series derived from the Finometer and EndoPAT devices was low, suggesting poor correlation. In contrast, squared coherence between HR time series derived from the two devices was excellent [High Frequency (HF) = 0.80, Low Frequency (LF) = 0.81], with gain values close to 1.0. ICC values for time- and frequency-domain HRV parameters were excellent (>0.9 except for relative HF HRV, which was 0.77), while ICC values for frequency-domain BP variability parameters and baroreceptor-HR reflex sensitivity were low. Finger volume pulse waveforms can be used to reliably assess both time-domain and frequency-domain HR variability. However, frequency domain BP variability parameters cannot be reliably assessed from finger volume pulse waveforms using the simple calibration technique used in this study.

Tài liệu tham khảo

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BMC Cardiovascular Disorders

Tập 14

1-8

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