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Epicardial connection between superior vena cava and right atrium contributes to subsequent atrial fibrillation: a case report.
Eur Heart J Case Rep
January 2025
Cardiovascular Centre, Social Medical Corporation Steel Memorial Yawata Hospital, 1-1-1 Haruno-machi, Yahatahigashi-ku, Kitakyushu 805-8508, Japan.
Background: The superior vena cava (SVC) acts as a non-pulmonary vein (PV) trigger for atrial fibrillation (AF) in 2%-6% of patients and harbours 25%-40% of non-PV foci. Approximately 10% of patients with AF have epicardial connections (ECs) between the atrium and PV inside the PV isolation lines, which are associated with AF recurrence. However, the contribution of EC(s) between the SVC and right atrium (RA) to subsequent AF remains unknown.
View Article and Find Full Text PDFGenetic variation in patent foramen ovale: a case-control genome-wide association study.
Front Genet
January 2025
Department of Neurology, West China Hospital of Sichuan University, Chengdu, China.
Background: Patent foramen ovale (PFO) is a congenital defect between the atria, resulting in abnormal hemodynamics. We conducted a genome-wide association study (GWAS) to identify common genetic variants associated with PFO.
Methods: We performed a whole genome sequencing in a discovery cohort of 3,227 unrelated Chinese participants screened for PFO via contrast transthoracic echocardiography (cTTE).
In Vivo Tissue Temperature Characteristics of Contact Force Catheter With a Mesh-Shaped Irrigation Tip: A Porcine Study.
Pacing Clin Electrophysiol
January 2025
Section of Laboratory for Animal Experiments, Institute of Medical Science, Medical Research Support Center, Nihon University, School of Medicine, Tokyo, Japan.
Background: Neither the actual in vivo tissue temperatures reached with a novel contact force sensing catheter with a mesh-shaped irrigation tip (TactiFlex SE, Abbott) nor the safety profile has been elucidated.
Methods: In a porcine model (n = 8), thermocouples were implanted epicardially in the superior vena cava, right pulmonary vein, and esophagus close to the inferior vena cava following a right thoracotomy. After chest closure, endocardial ablation was conducted near the thermocouples under fluoroscopic guidance.
Genetic and Molecular Underpinnings of Atrial Fibrillation.
NPJ Cardiovasc Health
December 2024
Department of Cardiology, Boston Children's Hospital, Boston, MA 02115, USA.
Atrial fibrillation (AF), the most common sustained arrhythmia, increases stroke and heart failure risks. Here we review genes linked to AF and mechanisms by which they alter AF risk. We highlight gene expression differences between atrial and ventricular cardiomyocytes, regulatory mechanisms responsible for these differences, and their potential contribution to AF.
View Article and Find Full Text PDFMetabolic dysfunction-associated steatotic liver disease and type 2 diabetes: A dual threat to cardiac dysfunction progression.
World J Cardiol
January 2025
Chronic Disease and Health Management Research Center, Geriatric Hospital of Nanjing Medical University, Nanjing 210024, Jiangsu Province, China.
Metabolic dysfunction-associated steatotic liver disease (MASLD), particularly in patients with type 2 diabetes mellitus (T2DM), is increasingly recognized as a multi-system disease that affects both hepatic and cardiovascular health. This study explores the association between MASLD-related liver fibrosis and cardiac dysfunction, focusing on how liver fibrosis contributes to cardiac remodeling and dysfunction. Cernea 's research highlights the strong correlation between liver fibrosis and changes in left ventricular mass, left atrial dimensions, and systolic and diastolic function in diabetic patients.
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