Cardiorespiratory failure is a common cause of death for patients with Duchenne muscular dystrophy. Current therapies may delay the progression of heart failure for this population. Measuring left ventricular ejection fraction (LVEF) regularly can show the rate of decline in left ventricle function for a patient.[1] (ref: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8941672/)
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