Acute Myocardial Injury in a Child with Duchenne Muscular Dystrophy: Pulse Steroid Therapy?
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Updated: Feb 17, 2026

Purification and Transplantation of Myogenic Progenitor Cell Derived Exosomes to Improve Cardiac Function in Duchenne Muscular Dystrophic Mice
Published on: April 10, 2019
Eliza Cinteza1, Claudiu Stoicescu2, Niculina Butoianu3
1Department of Pediatric Cardiology, "Marie Curie" Emergency Children's Hospital, Bucharest, Romania.
Insights
This case study shows that increasing prednisone dosage and adding enalapril can rapidly improve cardiac function in Duchenne muscular dystrophy patients experiencing myocardial infarction.
Area of Science:
- Cardiology
- Neurology
- Genetics
Background:
- Duchenne muscular dystrophy (DMD) commonly leads to dilated cardiomyopathy, causing heart failure and arrhythmias.
- Prednisone is a standard preventive treatment for DMD-related cardiac deterioration.
- Myocardial infarction is a rare but serious complication in DMD patients.
Purpose of the Study:
- To report a case of myocardial infarction in an 11-year-old boy with Duchenne muscular dystrophy.
- To investigate the effectiveness of intensified prednisone and enalapril treatment in managing this cardiac event.
Main Methods:
- A DMD patient on prednisone and metoprolol presented with symptoms of myocardial infarction.
- Diagnostic tools included electrocardiogram, troponin T levels, echocardiography, and coronary angiography.
- Treatment involved increasing prednisone dosage and initiating enalapril.
Main Results:
- The patient showed ST elevation, significantly elevated troponin T, and reduced left ventricular contractility.
- Coronary angiography excluded primary coronary artery disease.
- The intensified treatment led to a rapid decrease in troponin T and gradual recovery of myocardial function.
Conclusions:
- This case highlights a potential therapeutic approach for myocardial infarction in DMD patients.
- Prompt adjustment of immunosuppressive and heart failure medications may improve cardiac outcomes in DMD.
Abstract:
Heart implication in Duchenne muscular dystrophy usually is present in the form of dilated cardiomyopathy, manifested as heart failure and arrhythmias. To delay progression, including heart deterioration, prednisone is recommended as preventive treatment. We report the case of an 11-year-old boy diagnosed with Duchenne muscular dystrophy at the age of seven, who was on preventive treatment with oral prednisone (0.75 mg/kg/day) and beta blocker (metoprolol, 1 mg/kg/day). Suddenly, the patient presented acute chest pain, vomiting and sweating. The electrocardiogram showed ST elevation in inferior leads. Troponin T was increased to 30814 pg/ml (normal values <14 pg/mL). The echocardiography revealed reduced contractility of the posteroinferior wall of the left ventricle. After excluding coronary implications by coronary angiography, we increased the oral prednisone to 1.4 mg/kg/day for five days and added enalapril (0.5 mg/kg/day, po). The response was positive, with a rapid decrease of the troponin T value to 3186 pg/mL in five days and gradual recovery of myocardial contractility afterwards.
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