Age-related criteria for signal-averaged electrocardiographic late potentials in children

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Abstract
This study examined the age-related criteria of signal-averaged electrocardiographic (SA-ECG) parameters in children. SA-ECGs were obtained in 82 healthy volunteers in six groups depending on age (group 1:1 day to 110 ms, and LD>35 ms for those age 1 day to 100 ms, and LD>35 ms for those age 1 month to 130 ms, and LD>35 ms for those age 1 to 135 ms, and LD>35 ms for those age 20 to r=−0.78 and 0.76, respectively;p<0.05), suggesting that these parameters are associated with the thickness of the ventricular muscle and the ventricular conduction time. Right atrial pacing had no effect on the measured SA-ECG parameters. The age-related differences in SA-ECG parameters might be due to age-related differences in the thickness of the ventricular muscle and the ventricular conduction time but are not due to differences in the heart rate. The age difference of each parameter on SA-ECG should be considered for ventricular late potentials.

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