Key result
DMD linked to increased risk of refractory arrhythmias driven by structural myocardial changes.
Why the study?
Patients with DMD are at risk for ventricular and atrial arrhythmias due to fibrofatty myocardial replacement and co-morbidities like sleep disordered breathing and steroid-induced adiposity.
Case Report
Duchenne Muscular Dystrophy patients are at risk for atrial arrhythmias due to myocardial fibrofatty replacement and comorbidities like sleep disordered breathing.
May prompt enhanced arrhythmia surveillance in Duchenne muscular dystrophy; leaves open prospective evaluation of management approaches.
Duchenne Muscular Dystrophy (DMD) is an X-linked disorder that results from mutations in the dystrophin gene and is characterized by fibrofatty replacement of skeletal and cardiac muscle. Recent studies have demonstrated that both the atrial and ventricular myocardium is affected in DMD, placing these patients at risk for not only dysfunction, but also for the development of ventricular and atrial arrhythmias (1). In addition to structural myocardial changes, patients with DMD often have co-morbidities that further increase their risk of arrhythmias, such as sleep disordered breathing and increased adiposity from chronic steroid use (2,3).
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Greiner et al. (2024) conducted a case report in Duchenne Muscular Dystrophy (DMD) with refractory atrial arrhythmias. Patients with Duchenne Muscular Dystrophy are at increased risk for developing refractory atrial and ventricular arrhythmias due to structural myocardial changes and co-morbidities.
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