Prevalence of heart disease in patients with mitochondrial abnormalities on skeletal muscle biopsy

Objective Mitochondrial DNA mutations are associated with an increased risk of heart disease. Whether an increased prevalence of cardiovascular disease is present in patients presenting with mitochondrial abnormalities on skeletal muscle biopsy remains unknown. This study was designed to determine t...

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Veröffentlicht in:Annals of Clinical and Translational Neurology 2021-04, Vol.8 (4), p.825-830
Hauptverfasser: Scott Binder, M., Roda, Ricardo H., Corse, Andrea M., Sidhu, Sunjeet, Stewart, Sarah, Barth, Andreas S.
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Sprache:eng
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Zusammenfassung:Objective Mitochondrial DNA mutations are associated with an increased risk of heart disease. Whether an increased prevalence of cardiovascular disease is present in patients presenting with mitochondrial abnormalities on skeletal muscle biopsy remains unknown. This study was designed to determine the prevalence of cardiac conduction disease and structural heart disease in patients presenting with mitochondrial abnormalities on skeletal muscle biopsy. Methods This is a retrospective cohort study of 103 patients with mitochondrial abnormalities on skeletal muscle biopsy who were referred for evaluation of muscle weakness at a single tertiary care referral center from 2012 to 2018. Of these patients, 59 (57.3%) had an electrocardiogram available and were evaluated for the presence of conduction disease. An echocardiogram was available in 43 patients (42%) who were evaluated for the presence of structural heart disease. The prevalence of cardiac disease was compared to control cohort populations (Framingham and the Atherosclerosis Risk in Communities, ARIC cohorts). Results Mitochondrial abnormalities associated with cardiac conduction disease (defined as QRS duration ≥ 120 msec) were present in 8.9%, versus 2.0% (p 
ISSN:2328-9503
2328-9503
DOI:10.1002/acn3.51327