Cardiac involvement in Becker muscular dystrophy

Area of Science:

• Cardiology
• Neurology
• Genetics

Background:

• Becker muscular dystrophy (BMD) is a genetic neuromuscular disorder.
• Cardiac involvement (CI) is a common and significant complication in BMD patients and carriers.
• CI in BMD can range from subclinical to symptomatic, impacting patient prognosis.

Purpose of the Study:

• To review the clinical and subclinical manifestations of cardiac involvement in Becker muscular dystrophy.
• To discuss the pathophysiological basis, diagnostic approaches, and therapeutic strategies for CI in BMD.
• To emphasize the importance of early and regular cardiac assessment in BMD management.

Main Methods:

• This is a review article, synthesizing existing literature on cardiac involvement in Becker muscular dystrophy.
• The review covers clinical observations, diagnostic criteria, and treatment guidelines.
• Data is compiled from published studies and clinical case reports.

Main Results:

• Up to 100% of BMD patients exhibit subclinical CI; symptomatic CI typically emerges in the third decade.
• Manifestations include electrocardiographic abnormalities, hypertrophic or dilative cardiomyopathy, and heart failure.
• Cardiac involvement is more pronounced in patients than carriers, with no correlation to myopathy severity.

Conclusions:

• Comprehensive cardiac evaluation is essential upon BMD diagnosis.
• Regular cardiac monitoring is necessary due to the progressive nature of CI in BMD.
• Early detection and treatment of CI in BMD can lead to more favorable clinical outcomes.