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Electrical Heterogeneity in Hispanic Background Subpopulations: The HCHS/SOL.
JACC Adv
December 2024
Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, New York, USA.
Background: The Hispanic/Latino population is not uniform. Prevalence and clinical outcomes of cardiac arrhythmias in ethnic background subgroups are variable, but the reasons for differences are unclear. Vectorcardiographic Global Electrical Heterogeneity (GEH) has been shown to be associated with adverse cardiovascular outcomes.
View Article and Find Full Text PDFSpatial QRS-T angle can indicate presence of myocardial fibrosis in pediatric and young adult patients with hypertrophic cardiomyopathy.
J Electrocardiol
December 2024
Crown Princess Victoria Children's Hospital, Dept of Biomedical and Clinical Sciences, Dept of Pediatrics, Linköping University, Sweden; Pediatric Heart Centre, Skåne University Hospital and Dept of Clinical Sciences, Lund University, Sweden. Electronic address:
Background: Myocardial fibrosis, expressed as late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR), is an important risk factor for malignant cardiac events in hypertrophic cardiomyopathy (HCM). However, CMR is not easily available, expensive, also needing intravenous access and contrast.
Objective: To determine if derived vectorcardiographic spatial QRS-T angles, an aspect of advanced ECG (A-ECG), can indicate LGE to appropriately prioritize young HCM-patients for CMR.
Spatial ventricular gradient is associated with pacing-induced cardiomyopathy.
Heart Rhythm
December 2024
Harvard-Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts. Electronic address:
Background: Pacing-induced cardiomyopathy (PICM) is a frequent complication of right ventricular pacing that often requires reoperation for biventricular or conduction system pacing. Better methods for predicting PICM may inform initial pacing strategy and follow-up monitoring.
Objective: The purpose of this study was to determine whether the spatial ventricular gradient (SVG), a vectorcardiographic marker of ventricular electrical and mechanical heterogeneity, is associated with the subsequent development of PICM.
Exploring cardiac vector propagation in acute myocardial infarction: a spatial velocity perspective.
Future Cardiol
January 2025
Department of Physiology, Institute of Postgraduate Medical Education & Research-SSKM Hospital, Kolkata, India.
Aims: To objectively characterize the spatial-velocity dynamics of the QRS-loop in the vectorcardiogram (VCG) of patients with acute myocardial infarction (AMI).
Methods: VCG was constructed as a space curve directly with three quasi-orthogonal leads I, aVF and V2 recorded by conventional ECG of 25 healthy individuals and 50 AMI patients. Spatial velocity (SV) of the dynamic QRS loop, spatial distance (SD), and spatial magnitude (SM) were recorded, along with axis-specific component attributes of vector magnitude such as ΔX, ΔY, and ΔZ.
CineECG Repolarization Gradients Predict Acute Hemodynamic Response in CRT Patients.
J Cardiovasc Electrophysiol
December 2024
Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
Article Synopsis
- - The study investigates the effectiveness of a new ECG technique called CineECG, which visualizes heart electrical activity, in improving cardiac resynchronization therapy (CRT) for patients who don't respond well to standard treatments.
- - Researchers analyzed CineECG data from 15 patients with heart conditions under different pacing settings and found that specific movement directions in the heart's electrical signals correlate with better immediate heart performance (measured as dP/dt max).
- - The results indicate that the direction of the ST-T segment during repolarization can predict a significant improvement in heart function during CRT, suggesting that CineECG could help optimize treatment plans for patients.
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