Abstract:
R-R interval data is presented (24) in a format that includes relevant near field and far field ECG data. The near field view (51) provides a "pinpoint" classical view at classical recording speed. The far field view (52) provides an "intermediate" lower resolution, pre- and post-event view. Both ECG data views (51, 52) are temporally keyed to the extended duration R-R interval data (53) that is scaled non-linearly to maximize the visual differentiation for frequently-occurring heart rate ranges. The views (51, 52, 53) are presented simultaneously and their durations are flexible and adjustable. Diagnostically relevant cardiac events can be identified (23) and located to allow pre- and post-event heart rhythm data. The pinpoint "snapshot" and intermediate views of ECG data (56, 166) with the extended term R-R interval data (53) comparatively depicts heart rate context and patterns of behavior prior to and after a clinically meaningful arrhythmia or patient concern.
Abstract:
A method (200) for efficiently encoding and compressing ECG data optimized for use in an ambulatory electrocardiography monitor is provided. ECG data is first encoded and compressed (202) in a lossy process and further encoded and compressed (203) in a lossless process. A compression ratio significantly higher than other Holter-type monitors is achieved. Requirements for storage space and power cell consumption are reduced, contributing to the long-term availability of the monitor.
Abstract:
A system (40) and method (60) for interactive processing of ECG data (10) are presented. An electrocardiogram is displayed (63). A user selection of a portion of the displayed ECG (10) is received (64). Digitized signals corresponding to the selection are obtained (65). A list of digital filters (56) for filtering the selection are displayed (67). A user selection of one or more sets of the digital filters (56) is received (69), with each of the sets including one or more of the filters (56) from the list. The selected sets are applied (70) to the digitized signals for the selection. A filtered ECG (10) for the selection is generated (71) for each of the sets based on the signals filtered by that set. The filtered selection ECG for each of the sets are presented (71) on the display.