Abstract: In one embodiment, ECG data collected during the long-term monitoring are compressed through a two-step compression algorithm executed by an electrocardiography monitor. Minimum amplitude signals may become indistinguishable from noise if overly inclusive encoding is employed in which voltage ranges are set too wide. The resulting ECG signal will appear “choppy” and uneven with an abrupt slope. The encoding used in the first stage of compression can be dynamically rescaled on-the-fly when the granularity of the encoding is too coarse. In a further embodiment, offloaded ECG signals are automatically gained as appropriate on a recording-by-recording basis to preserve the amplitude relationship between the signals. Raw decompressed ECG signals are filtered for noise content and any gaps in the signals are bridged. The signal is then gained based on a statistical evaluation of peak-to-peak voltage (or other indicator) to land as many ECG waveforms within a desired range of display.

Abstract: A system and method for interactive processing of ECG data are presented. An electrocardiogram is displayed. A user selection of a portion of the displayed ECG is received. Digitized signals corresponding to the selection are obtained. A list of digital filters for filtering the selection are displayed. A user selection of one or more sets of the digital filters is received, with each of the sets including one or more of the filters from the list. The selected sets are applied to the digitized signals for the selection. A filtered ECG for the selection is generated for each of the sets based on the signals filtered by that set. The filtered selection ECG for each of the sets are presented on the display.