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First page or project page of “Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)” (opens in a new tab)

Paperdoi:10.1080/08037051.2026.2707794

Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)

Venue listed2026Added Nov 5, 2026

  • MP
  • PR
  • GB
  • DF
  • JZ
  • ML

Authors: Martin Proença, Pierre-Antonin Rigon, Guillaume Bonnier, Damien Ferrario, Joachim Zahnd, Mathieu Lemay

Blood Pressure (Taylor & Francis), 2026-09-25

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First page or project page of “Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)” (opens in a new tab)

TL;DR

Method-comparison and feasibility study. 30 hypertensive patients (18 female, 54 ± 17 y, BMI 29.2) came to 4 visits over 6 weeks during antihypertensive therapy. At each visit BP was the median of 5–7 consecutive readings from CSEM's wearable cuffless PPG monitor and from a validated oscillometric cuff (Microlife WatchBP Home A).

  • Form factor: wrist

Abstract

BackgroundReliable tracking of short- and long-term blood pressure (BP) changes is a prerequisite for clinical adoption of cuffless BP devices. This study evaluated the 6-week stability of BP estimation by CSEM's wearable photoplethysmography (PPG)-based cuffless BP monitor and its ability to track BP changes in hypertensive patients compared with a validated oscillometric device (Microlife WatchBP Home A).MethodsIn this feasibility method-comparison study, 30 hypertensive patients attended four visits over 6 weeks. At each visit, BP was estimated as the median of 5-7 consecutive measurements obtained with the cuff-based (Cuff BP) and cuffless (PPG BP) devices. Between-visit systolic and diastolic BP changes (ΔSBP, ΔDBP) were compared between devices. Concordance rate (CR), defined as the percentage of significant BP changes (ΔSBP >15 mmHg, ΔDBP >10 mmHg) showing the same direction with both devices, was also assessed.ResultsThirty participants (18 women; age 54 ± 17 years; BMI 29.2 ± 5.5 kg/m²) were included. Differences between devices were 0.2 ± 12.8 mmHg for ΔSBP and -0.1 ± 7.4 mmHg for ΔDBP. No temporal drift in differences between Cuff ΔBP and PPG ΔBP was observed over 6 weeks. CR for significant BP changes was 83% for SBP and 86% for DBP.ConclusionCSEM's wearable cuffless BP monitor provided stable BP estimation and concordant BP tracking during antihypertensive therapy. Interpretation is tempered by substantial variability of the oscillometric reference device. If confirmed in larger studies against a gold-standard reference, these findings could support the clinical acceptance of wearable cuffless BP monitoring.

Verbatim from Europe PMC (opens in a new tab) · Abstract via Europe PMC; © the authors/publisher

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Tasks & signals

Tasks

Blood pressure

Signals

PPGBP

Keywords

Cuffless BPBP TrendChange TrackingHypertensionCsemOscillometric Reference

How it works

How Method works: Setup → Method → TargetSetup: Signals (PPG, BP); Form factor (wrist). Method: Method. Target: Blood pressure.SetupSignals: PPG, BPSignalsPPG, BPForm factor: wristForm factorwristMethodMethodTargetBlood pressureBlood pressure

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Proença, M., Rigon, P.-A., Bonnier, G., Ferrario, D., Zahnd, J., & Lemay, M. (2026). Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026). Blood Pressure. https://doi.org/10.1080/08037051.2026.2707794
Proença, Martin, Pierre-Antonin Rigon, Guillaume Bonnier, Damien Ferrario, Joachim Zahnd, and Mathieu Lemay. 2026. "Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)." Blood Pressure. https://doi.org/10.1080/08037051.2026.2707794.
Proença, M., Rigon, P.-A., Bonnier, G., Ferrario, D., Zahnd, J. and Lemay, M. (2026) 'Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)', Blood Pressure. doi: 10.1080/08037051.2026.2707794.
Proença, Martin, et al. "Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)." Blood Pressure, 2026. https://doi.org/10.1080/08037051.2026.2707794.
M. Proença, P.-A. Rigon, G. Bonnier, D. Ferrario, J. Zahnd, and M. Lemay, "Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)," Blood Pressure, 2026, doi: 10.1080/08037051.2026.2707794.
@article{proenca2026sixweek,
  title         = {{Six-week stability and BP-change tracking of CSEM's wrist cuffless PPG BP monitor in hypertensive patients (Proença et al., Blood Pressure 2026)}},
  author        = {Proença, Martin and Rigon, Pierre-Antonin and Bonnier, Guillaume and Ferrario, Damien and Zahnd, Joachim and Lemay, Mathieu},
  year          = {2026},
  journal       = {Blood Pressure},
  publisher     = {Taylor \& Francis},
  doi           = {10.1080/08037051.2026.2707794}
}

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