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Diagnostic and Prognostic Significance of Exercise Stress Testing in Desmosomal Arrhythmogenic Cardiomyopathy.
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Background: Arrhythmogenic cardiomyopathy (ACM) is characterized by fibrofatty myocardial replacement and increased arrhythmic risk. Although exercise exacerbates desmosomal ACM, the prognostic significance of arrhythmias during exercise stress tests (ESTs) remains unclear.
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The widespread use of cardiac magnetic resonance imaging (MRI) in clinical practice has enabled the identification of numerous patients with evident damage from previous myocarditis, whether known or unknown. For years, myocardial fibrosis has been a topic of interest due to its established correlation with arrhythmic events in various clinical settings, including ischemic heart disease, dilated cardiomyopathy, and hypertrophic cardiomyopathy. MIBG scintigraphy is a method widely used in patients who are candidates for defibrillator implantation or have experienced heart failure.
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