Kasper Emerek
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View article: Deep learning-based beat-to-beat delineation of heart sounds and fiducial points in seismocardiography
Deep learning-based beat-to-beat delineation of heart sounds and fiducial points in seismocardiography Open
Introduction The application of deep learning methods in automatic delineation of fiducial points in seismocardiography (SCG) on a beat-to-beat basis provides the possibility of obtaining a novel and comprehensive approach to assess and mo…
View article: Concomitant changes in ventricular depolarization and repolarization and long‐term outcomes of biventricular pacing
Concomitant changes in ventricular depolarization and repolarization and long‐term outcomes of biventricular pacing Open
Background Biventricular (BiV) pacing increases transmural repolarization heterogeneity due to epicardial to endocardial conduction from the left ventricular (LV) lead. However, limited evidence is available on concomitant changes in ventr…
View article: Frequency and causes of QRS prolongation during exercise electrocardiogram testing in biventricular paced patients with heart failure
Frequency and causes of QRS prolongation during exercise electrocardiogram testing in biventricular paced patients with heart failure Open
Cardiac resynchronization therapy-defibrillator (CRT-D) implantation is associated with improvements in heart failure (HF) symptoms and all-cause mortality in patients with symptomatic HF, prolonged QRS duration (QRSd), and left ventricula…
View article: Lead one ratio in left bundle branch block predicts poor cardiac resynchronization therapy response
Lead one ratio in left bundle branch block predicts poor cardiac resynchronization therapy response Open
Background A low electrocardiogram (ECG) lead one ratio (LOR) of the maximum positive/negative QRS amplitudes is associated with lower left ventricular ejection fraction (LVEF) and worse outcomes in left bundle branch block (LBBB); however…
View article: Predicting the development of reduced left ventricular ejection fraction in patients with left bundle branch block
Predicting the development of reduced left ventricular ejection fraction in patients with left bundle branch block Open
Left bundle branch block (LBBB) increases the likelihood of developing reduced left ventricular (LV) ejection fraction (EF) but predicting which patients with LBBB and normal LVEF will develop decreased LVEF remains challenging. Fifty pati…
View article: Non‐invasively quantified changes in left ventricular activation predict outcomes in patients undergoing cardiac resynchronization therapy
Non‐invasively quantified changes in left ventricular activation predict outcomes in patients undergoing cardiac resynchronization therapy Open
Background Changes in left ventricular (LV) activation after cardiac resynchronization therapy (CRT) influence survival but are difficult to quantify noninvasively. Methods and Results We studied 527 CRT patients to assess whether noninvas…
View article: PR Prolongation predicts inadequate resynchronization with biventricular pacing in left bundle branch block
PR Prolongation predicts inadequate resynchronization with biventricular pacing in left bundle branch block Open
Background PR interval prolongation is associated with poor outcome after cardiac resynchronization therapy (CRT) among patients with left bundle branch block (LBBB) but the mechanisms are unknown. We investigated clinical outcomes, electr…
View article: Size Matters
Size Matters Open
Background: In patients with left bundle branch block (LBBB), QRS duration (QRSd) depends on left ventricular (LV) dimension. Previously, we demonstrated that normalizing QRSd to LV dimension, to adjust for variations in LV size, improved …
View article: Temporal Alignment of Asynchronously Sampled Biomedical Signals
Temporal Alignment of Asynchronously Sampled Biomedical Signals Open
Temporal alignment of signals obtained using different acquisition systems is often complicated by asynchronous sampling.In the current study we aligned 3-lead ECGs recorded in a phonocardiogram setup with 12-lead Holter ECGs. Two signals …