ECG manifestations reflecting left ventricular electrophysiological changes, including left ventricular hypertrophy/left ventricular high voltage, deepened S wave at lead V1, and abnormal Q wave, accounted for 66.13% (41/62) of total ECG abnormalities, among which the proportion in each age group, in sequence, was 7.89%, 10.53%, 19.77%, and 31.25%, demonstrating an increasing trend with age.
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Electrocardiographic features of children with Duchenne muscular dystrophy.
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