We report a case of a 55-year-old woman with idiopathic ventricular fibrillation (VF) who suffered from recurrent implantable cardioverter-defibrillator shocks triggered by short coupled ventricular premature beat (VPB). This VPB was mapped and ablated from the myocardium of right ventricle close to the lateral tricuspid annulus. < Triggering ventricular premature beat (VPB) in idiopathic ventricular fibrillation was reported to originate from the myocardium of right ventricular outflow tract or from Purkinje system. In this case, the origin of triggering VPB is the myocardium of right ventricle close to the lateral tricuspid annulus.>.
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http://dx.doi.org/10.1016/j.jccase.2013.11.006 | DOI Listing |
Rev Med Liege
January 2025
Service de Pneumologie, CHU Liège, Belgique.
Idiopathic pulmonary arterial hypertension (iPAH) is a rare, rapidly progressive disease associated with high morbidity and mortality. It is characterized by endothelial dysfunction within the pulmonary vascular bed and gradually leads to an increase in the pulmonary vascular resistances. Its non-specific symptomatology delays the diagnosis and brings the most severe forms to right ventricular failure.
View Article and Find Full Text PDFJ Interv Card Electrophysiol
January 2025
Divison of Arrhythmia, Cardiology and Vascular Department, St. David's Medical Center, Austin, TX, USA.
Background: The relationship between premature ventricular contractions (PVC) and right ventricular (RV) function is not widely known. Left ventricular (LV) dysfunction due to PVC is known as PVC-induced cardiomyopathy (PIC) and suppressing the PVC substrate would improve LV function. The effect of PVC ablation on changes in RV function in patients with subtle RV subclinical dysfunction remains unknown.
View Article and Find Full Text PDFTurk Kardiyol Dern Ars
January 2025
Department of Cardiology, Isfahan University of Medical Sciences, Isfahan, Iran.
Hypereosinophilic syndrome (HES) is traditionally described as chronic peripheral eosinophilia with involvement of various organs and systems, including the heart and nervous system. In this report, we describe cardiac involvement and border zone stroke in a patient with idiopathic HES. A 37-year-old woman presented with sudden right-sided weakness and slurred speech, which began four days before admission, accompanied by palpitations, retrosternal exertional chest discomfort, dry cough, and progressive shortness of breath over approximately two months.
View Article and Find Full Text PDFHeart Rhythm
January 2025
Department of Molecular Biosciences, University of California, Davis, CA, USA; Department of Basic Sciences, California Northstate University, Elk Grove, CA. Electronic address:
Background: Friedreich's ataxia (FA) is a rare inherited neuromuscular disorder, where most patients die from lethal cardiomyopathy and arrhythmias. Mechanisms leading to arrhythmic events in FA patients are poorly understood.
Objective: This study aims to examine cardiac electrical signal propagation in mouse model of FA with severe cardiomyopathy and evaluate effects of omaveloxolone (OMAV), the first FDA-approved therapy.
Arrhythm Electrophysiol Rev
December 2024
Department of Medicine, Division of Cardiovascular Medicine, Vanderbilt University Medical Center Nashville, TN, US.
Idiopathic arrhythmias originating from the mitral and tricuspid annuli are commonly encountered in clinical practice. This review focuses on distinguishing features of ventricular arrhythmias arising from these structures and the importance of distinguishing idiopathic arrhythmias from those associated with structural heart disease. Each region along the mitral and tricuspid annuli (including the cardiac crux and para-Hisian region) is then discussed separately, with a particular emphasis on the ablation strategies and pitfalls for each.
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