Electrogram summary

Patent metadata

Field	Value
Publication number	US-9668668-B2
Application number	US-201113250515-A
Country	US
Kind code	B2
Filing date	Sep 30, 2011
Priority date	Sep 30, 2011
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

The present disclosure is directed to an electrogram summary. In various examples, a subset of cardiac episodes are selected and displayed based on a set of summary rules. The subset of cardiac episodes includes at least one episode from each of a plurality of episode categories with at least one cardiac episode. In some examples, the order in which the cardiac episodes selected are displayed is based on the set of summary rules. The electrogram summary may include images or information regarding each of the selected cardiac episodes.

First claim

What is claimed is:

1. A method comprising;
receiving cardiac electrogram (EGM) signal data from an implantable medical device (IMD), the EGM signal data including a plurality of detected cardiac episodes;
categorizing, based on the EGM signal data, each of the plurality of cardiac episodes as one of a ventricular tachycardia/ventricular fibrillation (VT/VF) episode, a supraventricular tachycardia (SVT) episode, a non-sustained ventricular tachycardia (VTNS) episode, an atrial tachycardia/atrial fibrillation (AT/AF) episode, a monitored VT episode, or a ventricular oversensing (VOS) episode, wherein categorizing each of the plurality of cardiac episodes comprises categorizing a first episode and a second episode in different episode categories;
determining that the IMD categorized, based on the EGM signal data, the first episode and the second episode to be in a same category;
determining, for at least one of the episode categories, a subset including greater than or equal to one episode and less than a total number of episodes of the at least one episode category;
selecting, using a processor, the first cardiac episode and the second cardiac episode for display based on the categorization of the first episode and the second episode in different episode categories and the determination that the IMD categorized, based on the EGM signal data, the first episode and the second episode to be in the same category, wherein the subset includes at least one of the first cardiac episode and the second cardiac episode; and
displaying, simultaneously, information associated with the first cardiac episode and information associated with the second cardiac episode of the subset of cardiac episodes selected for display via a graphical user interface display, wherein the first cardiac episode and the second cardiac episode each includes a plurality of cardiac depolarization events, and wherein displaying, simultaneously, information associated with the first cardiac episode and information associated with the second cardiac episode of the subset of cardiac episodes comprises displaying, simultaneously, a first image of at least a portion of a first EGM signal from the first cardiac episode and a second image of at least a portion of a second EGM signal from the second cardiac episode.

2. The method of claim 1 , wherein the information associated with the first cardiac episode and the information associated with the second cardiac episode includes a thumbnail of the EGM signal data.

3. The method of claim 2 , further comprising, in response to user input, rearranging an order of the thumbnails displayed.

4. The method of claim 1 , further comprising, in response to receiving a selection of the first cardiac episode based on the displayed information, displaying an image of a portion of the first EGM signal associated the first cardiac episode a portion of a marker channel associated with the first cardiac episode.

5. The method of claim 4 , further comprising, in response to user input, adjusting the portion of the first EGM signal displayed.

6. The method of claim 4 , further comprising displaying a reference EGM, the reference EGM being an EGM signal collected at a time of transmission of the EGM signal data from the IMD.

7. The method of claim 1 , wherein displaying, simultaneously, the information associated with the first cardiac episode and the information associated with the second cardiac episode of the subset of cardiac episodes selected for display comprises:
providing a user interface allowing a user to change the relative position of the first image of the first cardiac episode and the second image of the second cardiac episode; and
comparing a morphology of the image of the EGM signal data associated with the first cardiac episode to the second cardiac episode.

8. The method of claim 1 , further comprising displaying a timeline of occurrence for the plurality of cardiac episodes.

9. The method of claim 8 , wherein the timeline includes an icon for each of the plurality of cardiac episodes conveying a classification by the IMD for the respective cardiac episodes.

10. The method of claim 8 , wherein the timeline includes an indication of cycle length for each of the plurality of cardiac episodes.

11. The method of claim 8 , wherein the timeline includes an indication of a retrospective analysis classification for each of the plurality of cardiac episodes.

12. The method of claim 8 , wherein the timeline includes an indication of an episode characteristic for each of the plurality of cardiac episodes.

13. The method of claim 1 , wherein determining, for at least one of the episode categories, a subset including greater than or equal to one episode and less than a total number of episodes of the at least one episode category comprises determining VT/VF episodes for the subset from among the VT/VF episodes received from the IMD based on at least one of:
number of shocks or number of anti-tachycardia pacing pulses in each VT/VF episode;
most recent VT/VF episode;
A to V ratio of each VT/VF episode; or
duration of each VT/VF episode.

14. The method of claim 13 , further comprising prioritizing an order the subset of VT/VF episodes for display, wherein the VT/VF episodes are prioritized based on at least one of:
number of shocks or number of anti-tachycardia pacing pulses in each VT/VF episode;
time of occurrence;
duration of each of the VT/VF episodes;
a stored predetermined prioritization of selection criteria; or stored physician preferences.

15. The method of claim 1 , wherein determining, for at least one of the episode categories, a subset including greater than or equal to one episode and less than a total number of episodes of the at least one episode category comprises determining SVT episodes for the subset from among the SVT episodes received from the IMD based on at least one of:
duration of each SVT episode;
morphology of each SVT episode;
reason for withholding treatment for each SVT episode,
V rate of each SVT episode.

16. The method of claim 15 , further comprising prioritizing an order the subset of SVT episodes for display, wherein the SVT episodes are prioritized based on at least one of:
duration of each SVT episode;
fastest V rates of the SVT episodes;
time of occurrence;
a stored predetermined prioritization of selection criteria; or
stored physician preferences.

17. The method of claim 1 , wherein determining, for at least one of the episode categories, a subset including greater than or equal to one episode and less than a total number of episodes of the at least one episode category comprises determining monitored VT episodes for the subset from among the monitored VT episodes received from the IMD based on at least one of:
different V rate than the rest of the monitored VT episodes;
different A rate than the rest of the monitored VT episodes;
duration of each of the monitored VT episodes;
V rates of each of the monitored VT episodes; or
time of occurrence of each of the monitored VT episodes.

18. The method of claim 17 , further comprising prioritizing an order the subset of monitored VT episodes for display, wherein the monitored VT episodes are prioritized based on at least one of:
time of occurrence;
duration of the monitored VT episodes;
a stored predetermined prioritization of selection criteria; or
stored physician preferences.

19. The method of claim 1 , wherein determining, for at least one of the episode categories, a subset including greater than or equal to one epi

Assignees

• Gunderson Bruce D
• Kleckner Karen J
• Ousdigian Kevin T
• Patel Amisha S
• Sanchez Julian
• Medtronic Inc

Inventors

• Gunderson Bruce D
• Kleckner Karen J
• Ousdigian Kevin T
• Patel Amisha S
• Sanchez Julian

Classifications

• A61B5/339 Primary

  Displays specially adapted therefor · CPC title

• A61B5/046

  Human Necessities · mapped topic

• A61B5/7217

  of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker · CPC title

• A61B5/044 Primary

  Human Necessities · mapped topic

• A61B5/0464

  Human Necessities · mapped topic