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Background: The results of pulmonary vein isolation are limited by arrhythmia recurrence, which is most often due to a failure to effectuate a durable contiguous circumferential transmural lesion around the pulmonary vein (PV) ostia. We postulated that enhancing the index ablation line through use of multiple cryoballoon diameters would be superior to standard ablation with bonus freeze.

Methods: We enrolled 226 consecutive patients referred for cryoballoon-based PV isolation (PVI).

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Myocardial extracellular volume fraction (ECV) measured via MRI serves as a quantitative indicator of myocardial fibrosis. However, accurate measurement of ECV using MRI in the presence of AF is challenging. Meanwhile, CT could be a promising alternative tool for measuring ECV regardless of sinus rhythm or AF.

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Introduction: Atrial fibrillation (AF), a common heart rhythm abnormality, is linked to a higher risk of stroke. Traditionally, warfarin has been the primary anticoagulation treatment for reducing the stroke risk. The new standard of treatment by direct oral anticoagulants (DOACs) offers greater benefits including improved efficacy and fewer adverse effects with reduced monitoring.

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Background: Implantable cardioverter-defibrillators (ICDs) are essential for reducing sudden cardiac death in patients at risk of ventricular arrhythmias. The choice of ICD lead - single-coil or dual-coil - can influence device performance and patient outcomes. This meta-analysis evaluates the comparative efficacy and safety of single-coil versus dual-coil ICD leads to inform clinical decision-making.

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