ambulatory electrocardiographic recording ( aer ) was performed on 27 adult patients with mild or moderate myotonic dystrophy ( md ) and in 12 adult patients with mild myotonia congenita ( mc ) to determine whether characteristic arrhythmias and conduction disturbances occur in the early stages of these myotonic disorders .
C0027126
myotonic dystrophy
C0553604
myotonic disorders