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Table 1 Overview of muscular dystrophies and their associated cardiac abnormalities

From: Progressive myocardial injury in myotonic dystrophy type II and facioscapulohumeral muscular dystrophy 1: a cardiovascular magnetic resonance follow-up study

Disease Cardiologic manifestations
Clinical CMR
Cardiac involvement (%) Possible phenotype of the involvement Conduction disturbances/ Arrhythmias Extension of late gadolinium enhancement Presence of fat infiltration
Duchenne muscular
dystrophy
Up to 90 DCM Sinus tachycardia, Ventricular tachycardias  +  +  +   + 
Becker muscular dystrophy 60–70 DCM AV nodal and bundle branch blocks  +  +  +  No data
Emery-Dreifuss muscular dystrophy 50–90 DCM, HCM, LVNC,
biatrial dilation
Bradycardias (AV blocks), Tachycardias (SVTs) Rare, if present associated with tachycardias Rare
Limb girdle muscular dystrophy 25–90 DCM, HCM SVTs, Ventricular tachycardia  +  +   + 
Myofibrillar myopathy 40–60 DCM, HCM, LVNC Complete AV Block no data No data
Facioscapulohumeral muscular dystrophy 5–25 DCM (rare) RBBB, SVTs  + / +  +   + 
Myotonic dystrophy type 1 60–80 DCM, HCM AV Blocks, RBBB/LBBB QTc/QRS prolongation, PVC, Ventricular Tachycardia, Atrial fibrillation, Atrial flutter  +  +  No data
Myotonic dystrophy type 2 Up to 25 DCM, HCM Atrial fibrillation  + / +  +   +