A 38-year-old man was admitted to our hospital after ventricular tachycardia. Endocardial bipolar and unipolar voltage mapping were performed and findings were integrated with data from intracardiac echocardiography (ICE) right ventricular (RV) speckle-tracking analysis. A reduction in the strain analysis was stored in correspondence of the fragmented electrogram area. The definitive diagnosis was arrhythmogenic RV cardiomyopathy (ARVC). The integration of ICE-derived RV strain and voltage mapping could represent a successful strategy to improve the results of ablation in ARVC.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9154011 | PMC |
| http://dx.doi.org/10.19102/icrm.2022.130501 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Correlative Raman-Voltage Microscopy Revealing the Localized Structure-Stress Relationship in Silicon Solar Cells.
ACS Nano
January 2025
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China.
Knowledge of localized strain at the micrometer scale is essential for tailoring the electrical and mechanical properties of ongoing thinning of crystal silicon (c-Si) solar cells. Thinning c-Si wafers below 110 m are susceptible to cracking in manufacturing due to the nonuniform stress distribution at a micrometer region, necessitating a rigorous technique to reveal the localized stress distribution correlating with its device electrical output. In this context, a Raman microscopy integrated with a photovoltage mapping setup with high resolution to the submicrometer scale is developed to acquire correlative Raman-voltage of the localized physical properties at the microcracks on the rear side of c-Si solar cells.
View Article and Find Full Text PDFSex differences in atrial potential morphology.
Int J Cardiol Heart Vasc
February 2025
Dept. of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands.
Background: Areas of conduction disorders play an important role in both initiation and perpetuation of AF and can be recognized by specific changes in unipolar potential morphology. For example, EGM fractionation may be caused by asynchronous activation of adjacent cardiomyocytes because of structural barriers such as fibrotic strands. However, it is unknown whether there are sex differences in unipolar potential morphology.
View Article and Find Full Text PDFWhole-Heart Histological and CMR Validation of Electroanatomic Mapping by Multielectrode Catheters in an Ovine Model.
JACC Clin Electrophysiol
January 2025
Department of Cardiology, Westmead Hospital, Sydney, New South Wales, Australia; Westmead Applied Research Centre, University of Sydney, Sydney, New South Wales, Australia. Electronic address:
Background: Accurate electroanatomic mapping is critical for identifying scar and the long-term success of ventricular tachycardia ablation.
Objectives: This study sought to determine the accuracy of multielectrode mapping (MEM) catheters to identify scar on cardiac magnetic resonance (CMR) and histopathology.
Methods: In an ovine model of myocardial infarction, we examined the effect of electrode size, spacing, and mapping rhythm on scar identification compared to CMR and histopathology using 5 multielectrode mapping catheters.
Ablation of slow activation areas in addition to pulmonary vein isolation improves the maintenance of the sinus rhythm in patients with persistent atrial fibrillation.
J Interv Card Electrophysiol
January 2025
Department of Cardiology, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China.
Background: Slow activation areas, characterized by decreased conduction velocities in the left atrium, are commonly observed in patients with persistent atrial fibrillation (PeAF). However, it remains unclear whether the ablation of slow activation areas combined with pulmonary vein isolation (PVI) improves clinical outcomes in these patients.
Methods: This single-center retrospective study included patients who underwent catheter ablation for PeAF.
A tailored substrate-based approach using focal pulsed field catheter ablation in patients with atrial fibrillation and advanced atrial substrate: Procedural data and 6-months success rates.
Heart Rhythm
January 2025
Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre, Maastricht, The Netherlands; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. Electronic address:
Background: Focal pulsed-field ablation (F-PFA) integrated in electroanatomical mapping (EAM) systems allows tailored lesion sets in patients with atrial fibrillation (AF).
Objective: To determine feasibility, safety and 6-months outcome of F-PFA for a tailored substrate-based catheter ablation (CA) approach in patients with AF and advanced atrial substrate.
Methods: Consecutive patients with AF and advanced atrial substrate treated by a F-PFA system (Cardiofocus) through contact-force sensing catheters integrated in EAM systems were prospectively enrolled.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!