Brugada-like ECG changes caused by signal filtering

Abstract

Clinical observations in which the ECG pattern of Brugada Syndrome was caused by ECG filtration are reviewed in the article. The causes of ECG distortion during filtering are considered. The relationship of these distortions with the parameters of anti-drift filters (high-pass filters) are considered also. it is necessary to make sure that the bandwidth of the electrocardiograph is not limited at low frequency (not less than 0.05 Hz, that equivalent time constant at 3.2s or more) in all cases of the Brugada syndrome pattern.