Lookup NU author(s): Dr Michela Guglieri,
Dr Alexander Murphy,
Professor Katherine Bushby,
Dr John Bourke
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© 2016 Wiley Periodicals, Inc. Introduction: The significance of abnormal cardiac measures in asymptomatic females who harbor dystrophin gene mutations is controversial. Methods: Echo-measures of ventricular function were compared with published norms in a cross-sectional study of 130 (age, 39±15.7 years) "carriers" of Duchenne or Becker muscular dystrophy (DMD/BMD). Correlations between cardiomyopathy (CM) and mutation, creatine kinase (CK) levels, age, and muscle symptoms were investigated. Results: Depending on definition, CM prevalence was 3-33%. Ejection fraction (Simpson method) was<55% in 9 (13%) and<40% in 2 (2.9%). Eleven (8.5%) had wall motion abnormalities. Left ventricular end-systolic dimensions were increased in 7 (5.7%) and end-diastolic in 17 (13.9%). CM did not correlate with mutation type, DMD or BMD phenotype, CK level, muscle symptoms, or age. Conclusions: Occult CM can be found by screening in DMD/BMD carriers. Its lack of age-correlation suggests that not all abnormalities progress. Optimum screening schedules require a better understanding of progressive CM.
Author(s): Mccaffrey T, Guglieri M, Murphy AP, Bushby K, Johnson A, Bourke JP
Publication type: Article
Publication status: Published
Journal: Muscle and Nerve
Print publication date: 01/06/2017
Online publication date: 19/10/2016
Acceptance date: 18/10/2016
ISSN (print): 0148-639X
ISSN (electronic): 1097-4598
Publisher: John Wiley and Sons Inc.
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