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Neuromuscul Disord. 2011 Jul;21(7):462-7. doi: 10.1016/j.nmd.2011.04.005. Epub 2011 May 14.

Electrocardiographic abnormalities in very young Duchenne muscular dystrophy patients precede the onset of cardiac dysfunction.

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  • 1The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA.

Abstract

Overt cardiac involvement in Duchenne muscular dystrophy (DMD) typically occurs later in the disease. The primary aim was to estimate the proportion of young (<6 years of age) DMD patients with manifestations of cardiac disease by electrocardiography (ECG). Secondary aims were to assess associations between ECG abnormalities and evidence of cardiac disease by echocardiography, as well as to estimate the relationship between dystrophin mutation site and an abnormal ECG. Seventy eight steroid-naive DMD patients <6 years of age were identified. ECG abnormalities were identified in 78%, with LV pathology being the most commonly identified pattern. Only one echocardiogram was abnormal. There was no statistically significant relationship identified between ECG abnormalities and dystrophin genotype. ECG abnormalities are common in very young DMD patients, signaling cardiac involvement well before the onset of clinical symptoms.

PMID:
21571532
DOI:
10.1016/j.nmd.2011.04.005
[PubMed - indexed for MEDLINE]
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