Comparison of Late Potentials for 24 Hours Between Brugada Syndrome and Arrhythmogenic Right Ventricular Cardiomyopathy Using a Novel Signal-Averaging System Based on Holter ECG

47 subjects, including 15 patients with Brugada syndrome (BS) with characteristic ECG changes and symptomatic episodes, 12 patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) meeting recent criteria, and 20 healthy controls.

Continuous measurement of 3 late potential (LP) parameters for 24 hours using a novel Holter-based signal-averaged ECG system.

Comparison between Brugada syndrome patients, ARVC patients, and healthy controls.

Incidence of late potentials and dynamic daily variations (SD values) of 3 LP parameters (filtered QRS duration, root mean square voltage of the terminal 40 ms of the filtered QRS complex, and duration of low-amplitude signals [<40 µV] in the terminal, filtered QRS complex) over 24 hours.surrogate