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Measurements of Motor Function and Other Clinical Outcome Parameters in Ambulant Children with Duchenne Muscular Dystrophy
Published on: January 12, 2019
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Current Cardiac Imaging Approaches in Duchenne Muscular Dystrophy
Sabrina Poonja1, Alyssa Power1, Jean K Mah1,2
1Department of Paediatrics, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Journal of Clinical Neuromuscular Disease
|November 16, 2018
Summary
Duchenne muscular dystrophy (DMD) cardiomyopathy affects nearly all patients by age 30. Early cardiac imaging with echocardiography and MRI is crucial for detecting subclinical changes and initiating timely treatment.
Area of Science:
- Cardiology
- Neuromuscular Disorders
- Medical Imaging
Background:
- Duchenne muscular dystrophy (DMD), an X-linked disorder, causes progressive skeletal muscle weakness and dilated cardiomyopathy.
- Cardiac dysfunction is a major cause of morbidity and mortality in DMD patients, with prevalence increasing significantly with age.
- Early detection of DMD-related cardiomyopathy is vital for initiating therapies to improve outcomes and survival.
Purpose of the Study:
- To review the clinical applications, advantages, and disadvantages of cardiac imaging for screening and surveillance of DMD.
- To focus on transthoracic echocardiography (TTE) and cardiac magnetic resonance imaging (CMR) in managing DMD cardiac manifestations.
Main Methods:
- Review of current literature on cardiac imaging techniques for Duchenne muscular dystrophy.
- Comparative analysis of transthoracic echocardiography (TTE) and cardiac magnetic resonance imaging (CMR) for diagnosing and monitoring DMD cardiomyopathy.
- Emphasis on the role of imaging in detecting subclinical cardiac structural and functional changes.
Main Results:
- Transthoracic echocardiography (TTE) offers rapid, accessible cardiac screening for DMD patients.
- Cardiac magnetic resonance imaging (CMR) serves as the gold standard for quantifying ventricular function and assessing myocardial fibrosis.
- Both TTE and CMR have complementary roles in the comprehensive surveillance of DMD-related cardiomyopathy.
Conclusions:
- Regular cardiac imaging surveillance, particularly using TTE and CMR, is essential for early diagnosis of cardiomyopathy in DMD.
- Timely diagnosis enables the initiation of potentially disease-modifying therapies, improving long-term prognosis for DMD patients.
- Understanding the strengths and limitations of TTE and CMR is key to optimizing cardiac care in Duchenne muscular dystrophy.
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