Publications by authors named "F V Y Tjong"

Leadless pacemakers (LPs) are self-contained pacemakers implanted inside the heart, providing a clinical strategy of pacing without pacemaker leads or a subcutaneous pocket. From an experimental therapy first used clinically in 2012, a decade later this technology is an established treatment option. Because of technologic advances and growing evidence, LPs are increasingly being used.

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Aims: Wearable health technologies are increasingly popular. Yet, wearable monitoring only works when devices are worn as intended, and adherence reporting lacks standardization. In this study, we aimed to explore the long-term adherence to a wrist-worn activity tracker in the prospective SafeHeart study and identify patient characteristics associated with adherence.

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Article Synopsis
  • - This study investigates the relationship between physical activity and the need for implantable cardioverter defibrillator (ICD) therapy in patients with an ICD by analyzing their movement and sleep data collected via wrist accelerometers over 28 days.
  • - Among 253 participants, higher inactive durations and specific walking cadences were linked to an increased risk of needing ICD therapy, with a U-shaped relationship observed for inactivity and a linear relationship for cadence and sleep duration.
  • - The findings suggest that monitoring daily movement and sleep patterns could help predict the risk of ventricular arrhythmia, highlighting the need for larger studies to further explore the use of these digital biomarkers in clinical risk assessment.
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We aimed to identify and characterise behavioural profiles in patients at high risk of SCD, by using deep representation learning of day-to-day behavioural recordings. We present a pipeline that employed unsupervised clustering on low-dimensional representations of behavioural time-series data learned by a convolutional residual variational neural network (ResNet-VAE). Data from the prospective, observational SafeHeart study conducted at two large tertiary university centers in the Netherlands and Denmark were used.

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Sudden cardiac death (SCD) remains a pressing health issue, affecting hundreds of thousands each year globally. The heterogeneity among people who suffer a SCD, ranging from individuals with severe heart failure to seemingly healthy individuals, poses a significant challenge for effective risk assessment. Conventional risk stratification, which primarily relies on left ventricular ejection fraction, has resulted in only modest efficacy of implantable cardioverter-defibrillators for SCD prevention.

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