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Cardiac transplantation in a patient with muscular dystrophy and cardiomyopathy
P D Donofrio1, V R Challa, B T Hackshaw
1Department of Neurology, Wake Forest University, Bowman Gray School of Medicine, Winston-Salem, NC 27103.
Insights
Heart transplantation is a viable treatment for patients with muscular dystrophy and severe cardiomyopathy. This intervention can restore exercise capacity and improve life expectancy in select individuals.
Area of Science:
- Cardiology
- Neurology
- Genetics
Background:
- Muscular dystrophy can lead to progressive cardiomyopathy.
- Genetic factors play a role in muscular dystrophy and associated cardiac conditions.
- Early identification of cardiac involvement in muscular dystrophy is crucial.
Observation:
- A 17-year-old male with muscular dystrophy presented with cardiomyopathy, cardiomegaly, hepatomegaly, proximal muscle weakness, and calf hypertrophy.
- Family history revealed a sibling deceased from cardiomyopathy and elevated muscle enzymes in asymptomatic relatives.
- Biopsies confirmed Becker's muscular dystrophy.
Findings:
- The patient underwent orthotopic cardiac transplantation due to intractable heart failure.
- Two years post-transplantation, the patient demonstrated significant recovery, returning to work and improved exercise tolerance.
- Becker's muscular dystrophy-associated cardiomyopathy is treatable with cardiac transplantation.
Implications:
- Cardiac transplantation is a potential therapeutic option for muscular dystrophy patients with life-threatening cardiomyopathy refractory to medical treatment.
- Successful transplantation can lead to improved quality of life and prolonged survival in affected individuals.
- This case highlights the importance of multidisciplinary care for muscular dystrophy patients with cardiac complications.
Abstract:
A 17-year-old boy with muscular dystrophy developed a cardiomyopathy. His brother died of a cardiomyopathy, and muscle enzyme levels were elevated in asymptomatic family members. Examination revealed cardiomegaly, hepatomegaly, proximal muscle atrophy and weakness, and calf hypertrophy. Skeletal muscle and endomyocardial biopsy specimens were consistent with Becker's muscular dystrophy. Because of intractable heart failure, orthotopic cardiac transplantation was performed. Two years after transplantation, the patient has returned to work and regained previous exercise tolerance. Heart transplantation can be an acceptable treatment of patients who have muscular dystrophy, with preserved ambulation and favorable life expectancy, and also life-threatening cardiomyopathy refractory to medical management.