Results 171 to 180 of about 36,712 (243)

Feasibility and Safety of High‐Power Settings for Electrical Isolation of the Superior Vena Cava Using a Catheter Capable of Local Impedance and Contact Force Monitoring

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
High‐power superior vena cava isolation using a contact force– and local impedance–sensing catheter achieved safe and consistent first‐pass isolation. Local impedance decreased more rapidly than generator impedance, accurately reflecting effective lesion formation and enabling reliable real‐time assessment in thin SVC myocardium.
Daisuke Kawano   +10 more
wiley   +1 more source

Electro‐Mechanical Dissociation in Chagas Cardiomyopathy: Comparative Analysis of Arrhythmic Burden Beyond LVEF

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
Despite matched clinical characteristics and LVEF, patients with Chagas cardiomyopathy exhibit a significantly higher arrhythmic burden compared to ischemic cardiomyopathy. This electro‐mechanical dissociation highlights the necessity of sudden death risk stratification strategies that extend beyond traditional ejection fraction thresholds.
Luis E. Echeverría   +7 more
wiley   +1 more source

Impact of Pericardial Fat on Intracardiac Atrial Impedance and Generator Impedance

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
Intracardiac atrial impedance (IAI) was associated with pericardial fat volume, serum sodium levels, and hemoglobin concentrations, but not with body mass index. IAI was also an independent determinant of generator impedance. These findings suggest that IAI may serve as a real‐time indicator for optimizing ablation strategies based on patient‐specific ...
Shogo Hamaura   +8 more
wiley   +1 more source

Efficacy of a Novel Ablation Index Algorithm for Cavotricuspid Isthmus Ablation Using a Flexible‐Tip Ablation Catheter

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
AutoMark Index (AI) is a novel ablation algorithm that combines contact force, radiofrequency current, and application to provide real‐time lesion formation. AI‐guided CTI ablation protocol is efficient in shortening RF duration for acute bidirectional CTI block and CTI procedure time compared to the conventional 40 W ablation protocol.
Koji Sudo   +11 more
wiley   +1 more source

Quantitative Measurement of Extracellular Vesicle‐Sized Particles in Blood Plasma by Laser Diffraction Without an Extraction Process: A Proof‐of‐Concept Study in Atrial Fibrillation

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
Laser diffraction enabled rapid measurement of extracellular vesicle‐sized particles in fasting plasma without an extraction process. In this proof‐of‐concept study, particle concentrations were higher in atrial fibrillation than in controls, suggesting the potential of this simple approach for biomarker assessment.
Giichi Nitta   +15 more
wiley   +1 more source

Clinical and Therapeutic Phenotypic Clustering and Prognostic Stratification in Heart Failure Patients With Atrial Fibrillation

open access: yesJournal of Arrhythmia, Volume 42, Issue 3, June 2026.
Phenotype‐specific characteristics and potential mechanisms affecting outcomes in acute decompensated heart failure. The four phenotypes show distinct clinical profiles and associated prognoses. Phenotype 1 comprises relatively young males with reduced LVEF under optimal therapy, and Phenotype 2 includes middle‐aged females with generally favorable ...
Masamichi Yano   +14 more
wiley   +1 more source

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