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[Restrictive cardiomyopathy due to myofibrillar myopathy]
1Service de cardiologie pédiatrique, hôpital de la Timone-Enfant, 13005 Marseille, France.
Insights
Early and severe cardiomyopathy in children may indicate myofibrillar myopathy. Diagnosis requires examining muscle biopsy samples, as seen in a fatal case of restrictive cardiomyopathy.
Area of Science:
- Pediatric Cardiology
- Neuromuscular Disorders
- Genetic Pathology
Background:
- Restrictive cardiomyopathy in infants presents diagnostic challenges.
- Myofibrillar myopathies are a group of inherited muscle diseases.
- Early diagnosis is crucial for managing pediatric cardiomyopathies.
Observation:
- A one-year-old child presented with severe restrictive cardiomyopathy.
- Muscle and endomyocardial biopsies confirmed myofibrillar myopathy.
- The patient's condition was fatal despite intensive medical support.
Findings:
- Myofibrillar myopathy can manifest as early and severe cardiomyopathy in children.
- Biopsy analysis is essential for diagnosing myofibrillar myopathy.
- Restrictive cardiomyopathy in pediatric cases warrants consideration of myofibrillar myopathy.
Implications:
- Myofibrillar myopathy should be investigated in pediatric restrictive cardiomyopathy cases.
- Diagnostic protocols for pediatric cardiomyopathy should include muscle biopsy.
- Understanding the link between myofibrillar myopathy and cardiomyopathy may improve early detection and management.
Unlabelled:
Early and severe cardiomyopathy may be related to myofibrillar myopathy.
Case Report:
We report a one-year-old child with early and severe restrictive cardiomyopathy. The diagnosis of myofibrillar myopathy was obtained on skeletal muscle and endomyocardial biopsies. The patient died despite inotropic support and mechanical ventilation.
Conclusion:
Myofibrillar myopathy must be considered when exploring the etiology of a restrictive cardiomyopathy in children. The diagnosis relies on examination of endomyocardial or skeletal muscle biopsy samples.
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