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Open AccessArticle

Preclinical, Multi-Aspect Assessment of the Reliability of a Photoplethysmography-Based Telemonitoring System to Track Cardiovascular Status

1
Institute of Translational Medicine, Semmelweis University, 1092 Budapest, Hungary
2
E-Med4All Europe ltd., 1036 Budapest, Hungary
3
Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(22), 7977; https://doi.org/10.3390/app10227977
Received: 28 September 2020 / Revised: 6 November 2020 / Accepted: 8 November 2020 / Published: 10 November 2020
(This article belongs to the Section Applied Biosciences and Bioengineering)
Telemonitoring systems equipped with photoplethysmography-based contour analysis of the digital arterial volume pulse (DVP) can be optimal tools for remote monitoring of cardiovascular patients; however, the method is known to be sensitive to errors. We aimed to show that DVP analysis is a reliable method to track cardiovascular status. We used our proprietary SCN4ALL telemedicine system and analyzed nine parameters derived from the DVP and its second derivative (SDDVP). First, we assessed the repeatability of system measurements by detecting artificial signals. Then test–retest reliability of human measurements was evaluated in healthy individuals under standardized conditions. The SCN4ALL system analyzed each parameter with high accuracy (coefficients of variation (CVs) < 1%). Test–retest reliability of most parameters (stiffness index, reflection index, left ventricular ejection time index, b/a, heart rate) was satisfactory (CVs < 10%) in healthy individuals. However, aging index and d/a ratio derived from the SDDVP were more variable. Photoplethysmography-based pulse contour analysis is a reliable method to monitor cardiovascular status if measurements are performed with a system of high accuracy. Our results highlighted that SDDVP parameters can be interpreted with limitations due to (patho)physiological variations of the DVP. We recommend the evaluation of these parameters only in measurements where all inflections of SDDVP are detected reliably. View Full-Text
Keywords: pulse wave analysis; photoplethysmography; telemedicine; test–retest reliability; pulse contour pulse wave analysis; photoplethysmography; telemedicine; test–retest reliability; pulse contour
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MDPI and ACS Style

Kulin, D.; Antali, F.; Kulin, S.; Wafa, D.; Lucz, K.I.; Veres, D.S.; Miklós, Z. Preclinical, Multi-Aspect Assessment of the Reliability of a Photoplethysmography-Based Telemonitoring System to Track Cardiovascular Status. Appl. Sci. 2020, 10, 7977. https://doi.org/10.3390/app10227977

AMA Style

Kulin D, Antali F, Kulin S, Wafa D, Lucz KI, Veres DS, Miklós Z. Preclinical, Multi-Aspect Assessment of the Reliability of a Photoplethysmography-Based Telemonitoring System to Track Cardiovascular Status. Applied Sciences. 2020; 10(22):7977. https://doi.org/10.3390/app10227977

Chicago/Turabian Style

Kulin, Dániel; Antali, Flóra; Kulin, Sándor; Wafa, Dina; Lucz, Konrád I.; Veres, Dániel S.; Miklós, Zsuzsanna. 2020. "Preclinical, Multi-Aspect Assessment of the Reliability of a Photoplethysmography-Based Telemonitoring System to Track Cardiovascular Status" Appl. Sci. 10, no. 22: 7977. https://doi.org/10.3390/app10227977

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