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Comparative Evaluation of Consumer Wearable Devices for Atrial Fibrillation Detection: Validation Study

Comparative Evaluation of Consumer Wearable Devices for Atrial Fibrillation Detection: Validation Study

The diagnosis of AF requires an electrocardiogram (ECG) showing irregular R-R intervals (when atrioventricular conduction is not impaired) and the absence of distinct repeating P waves [4]. Historically, ECG diagnostics were confined to medical settings, using devices administered or prescribed by health care professionals. However, the 21st century has witnessed a rapid surge in the availability and use of consumer-oriented wearable devices (CWDs) capable of monitoring heart rhythm [5-8].

Femke Wouters, Henri Gruwez, Christophe Smeets, Anessa Pijalovic, Wouter Wilms, Julie Vranken, Zoë Pieters, Hugo Van Herendael, Dieter Nuyens, Maximo Rivero-Ayerza, Pieter Vandervoort, Peter Haemers, Laurent Pison

JMIR Form Res 2025;9:e65139

Using Biosensors and Digital Biomarkers to Assess Response to Cardiac Rehabilitation: Observational Study

Using Biosensors and Digital Biomarkers to Assess Response to Cardiac Rehabilitation: Observational Study

Although not statistically significant, an increase of 2.23 m L kg-1 min-1 in peak VO2 was seen between baseline and end-of-study for the low-response group (14/44, 32%, P=.10).

Hélène De Cannière, Christophe JP Smeets, Melanie Schoutteten, Carolina Varon, Chris Van Hoof, Sabine Van Huffel, Willemijn Groenendaal, Pieter Vandervoort

J Med Internet Res 2020;22(5):e17326

The Added Value of In-Hospital Tracking of the Efficacy of Decongestion Therapy and Prognostic Value of a Wearable Thoracic Impedance Sensor in Acutely Decompensated Heart Failure With Volume Overload: Prospective Cohort Study

The Added Value of In-Hospital Tracking of the Efficacy of Decongestion Therapy and Prognostic Value of a Wearable Thoracic Impedance Sensor in Acutely Decompensated Heart Failure With Volume Overload: Prospective Cohort Study

Thoracic impedance data showed an inverse relationship with fluid status for a representative patient with combined HF (Figure 2) and with isolated left-sided HF (Figure 3) during hospital admission, also visible by the observed strong correlation coefficients (rs>0.700, P Relationship between thoracic impedance at 80 k Hz (R80k Hz; black triangles) and fluid balance (blue squares) for a representative patient admitted with combined heart failure.

Christophe J P Jp Smeets, Seulki Lee, Willemijn Groenendaal, Gabriel Squillace, Julie Vranken, Hélène De Cannière, Chris Van Hoof, Lars Grieten, Wilfried Mullens, Petra Nijst, Pieter M Vandervoort

JMIR Cardio 2020;4(1):e12141

A Novel Intelligent Two-Way Communication System for Remote Heart Failure Medication Uptitration (the CardioCoach Study): Randomized Controlled Feasibility Trial

A Novel Intelligent Two-Way Communication System for Remote Heart Failure Medication Uptitration (the CardioCoach Study): Randomized Controlled Feasibility Trial

No significant differences were observed in the number of patients on guideline-recommended maximum β-blocker dose in the Cardio Coach intervention group when compared with the usual care control group at both 3 months (43% vs 40%, P>.99) and 6 months (50% vs 40%, P=.69) of follow-up (Figure 3). Additionally, in terms of ACE-I uptitration, no significant differences were observed at both 3 months (43% vs 40%, P>.99) and 6 months (42% vs 40%, P>.99) of follow-up (Figure 3).

Christophe JP Jp Smeets, Valerie Storms, Pieter M Vandervoort, Pauline Dreesen, Julie Vranken, Marita Houbrechts, Hanne Goris, Lars Grieten, Paul Dendale

JMIR Cardio 2018;2(1):e8

Prenatal Remote Monitoring of Women With Gestational Hypertensive Diseases: Cost Analysis

Prenatal Remote Monitoring of Women With Gestational Hypertensive Diseases: Cost Analysis

The baseline clinical characteristics of the population enrolled were almost homogeneous, without differences between the two groups except for primigravida (44%, 19/43) in the remote monitoring group versus 66% (65/97) in the conventional care group (P=.02) and smoking (0%, 0/43) in the remote monitoring group versus 10%, (10/97) in the conventional care group (P=.03). Baseline clinical characteristics (N=140). The health care costs are presented in Table 2.

Dorien Lanssens, Thijs Vandenberk, Christophe JP Smeets, Hélène De Cannière, Sharona Vonck, Jade Claessens, Yenthel Heyrman, Dominique Vandijck, Valerie Storms, Inge M Thijs, Lars Grieten, Wilfried Gyselaers

J Med Internet Res 2018;20(3):e102

Metadata Correction: Clinical Validation of Heart Rate Apps: Mixed-Methods Evaluation Study

Metadata Correction: Clinical Validation of Heart Rate Apps: Mixed-Methods Evaluation Study

The authors of “Clinical Validation of Heart Rate Apps: Mixed-Methods Evaluation Study” (JMIR Mhealth Uhealth 2017;5(8):e129) overlooked crediting Christophe Mortelmans, Ruth Van Haelst, and Bert Vaes as authors when metadata was entered into the submission system. They are researchers (described in the paper as general practitioners) with the Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium. 

Thijs Vandenberk, Jelle Stans, Christophe Mortelmans, Ruth Van Haelst, Gertjan Van Schelvergem, Caroline Pelckmans, Christophe JP Smeets, Dorien Lanssens, Hélène De Cannière, Valerie Storms, Inge M Thijs, Bert Vaes, Pieter M Vandervoort

JMIR Mhealth Uhealth 2018;6(3):e19

Bioimpedance Alerts from Cardiovascular Implantable Electronic Devices: Observational Study of Diagnostic Relevance and Clinical Outcomes

Bioimpedance Alerts from Cardiovascular Implantable Electronic Devices: Observational Study of Diagnostic Relevance and Clinical Outcomes

A bioimpedance alert is triggered when the daily impedance is lower than the reference impedance for a programmable duration known as the congestion trigger (ie, nominal 13 days for ICDs, 14 days for CRT-D, and 16 days for CRT-P) [15]. In our study, the default congestion trigger settings were used.

Christophe JP Jp Smeets, Julie Vranken, Jo Van der Auwera, Frederik H Verbrugge, Wilfried Mullens, Matthias Dupont, Lars Grieten, Hélène De Cannière, Dorien Lanssens, Thijs Vandenberk, Valerie Storms, Inge M Thijs, Pieter M Vandervoort

J Med Internet Res 2017;19(11):e393

Clinical Validation of Heart Rate Apps: Mixed-Methods Evaluation Study

Clinical Validation of Heart Rate Apps: Mixed-Methods Evaluation Study

The results indicate no significant difference (P=.61) between the HRs measured by the 3 different devices. Results show high correlations without significant differences for all device pairs. However, since correlation does not necessarily imply agreement, Bland-Altman plots were constructed to evaluate agreement between each pair of devices (Figure 8). The mean bias ranged from 0.29 bpm (Nonin–Alive Cor) to 1.42 bpm (Fibri Check–Alive Cor) and 1.72 bpm (Fibri Check–Nonin).

Thijs Vandenberk, Jelle Stans, Christophe Mortelmans, Ruth Van Haelst, Gertjan Van Schelvergem, Caroline Pelckmans, Christophe JP Smeets, Dorien Lanssens, Hélène De Cannière, Valerie Storms, Inge M Thijs, Bert Vaes, Pieter M Vandervoort

JMIR Mhealth Uhealth 2017;5(8):e129