Systems and methods for arranging and labeling cardiac episodes

• US 20080071182A1
• Filed: 12/21/2006
• Published: 03/20/2008
• Est. Priority Date: 09/14/2006
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: McCabe, Aaron, Li, Dan, Cazares, Shelley, Sathaye, Alok
• Granted Patent: US 8,712,507 B2
• Time in Patent Office: Days
• US Class Current: 600/509
• CPC Class Codes: A61B 5/363 Detecting tachycardia or bradycardia
• CPC Class Codes: A61B 5/726 using Wavelet transforms

Abstract

Methods and systems for arranging and labeling cardiac episodes based on acquired cardiac episode data are described. Cardiac episodes are algorithmically arranged based on one or more discriminating features of the episode data. A user is presented with at least one episode selected from the arrangement of cardiac episodes. The user inputs a label that characterizes the selected episode. The label is algorithmically appended to the data of the selected episode and to other episodes of the arrangement of cardiac episodes based on the discriminating features.

Claims

1. A method operable on data acquired by an implantable cardiac device and associated with a plurality of cardiac episodes, the method comprising:

algorithmically arranging the cardiac episodes based on one or more discriminating features of the episodes;

presenting, to a user, at least one episode selected from the arrangement of cardiac episodes;

receiving a user-selected label that characterizes the selected episode and appending the label to the data of the selected episode, and

algorithmically appending the label to the data of other episodes of the arrangement of cardiac episodes.

2. The method of claim 1, wherein arranging the cardiac episodes comprises arranging the episodes based on similarity of the one or more discriminating features.

3. The method of claim 1, wherein arranging the cardiac episodes comprises grouping the episodes based on the one or more discriminating features.

4. The method of claim 3, wherein a number of groups is determined by a user.

5. The method of claim 3, wherein a number of groups is determined algorithmically.

6. The method of claim 1, wherein arranging the arrhythmic episodes comprises ordering the episodes based on the one or more discriminating features.

7. The method of claim 6, further comprising grouping the ordered episodes.

8. The method of claim 7, wherein grouping the ordered episodes comprises:

identifying one or more ordered episodes defining boundary episodes between groups; and

grouping the ordered episodes based on the boundary episodes.

9. The method of claim 1, wherein receiving a user-selected label comprises:

algorithmically selecting a label for the selected episode; and

confirming, by the user, the algorithmically selected label or selecting, by the user, a label different from the algorithmically selected label.

10. The method of claim 1, further comprising receiving additional episode data acquired by the implantable cardiac device and repeating the algorithmically arranging and algorithmically appending processes using previously acquired episode data and the additional episode data.

11. The method of claim 10, wherein repeating the algorithmically arranging and algorithmically appending processes is initiated algorithmically or manually.

12. The method of claim 1, wherein presenting the at least one episode to the user comprises graphically displaying a cardiac signal associated with the cardiac episode.

13. The method of claim 1, wherein the one or more discriminating features of the episodes characterize a conduction pattern of an arrhythmic episode or a type of arrhythmia.

14. The method of claim 1, wherein the label characterizes at least some of the cardiac episodes as tachyarrhythmia episodes that are ventricular in origin or supraventricular in origin.

15. The method of claim 1, wherein the label characterizes at least some of the cardiac episodes as tachyarrhythmia episodes that are hemodynamically stable or hemodynamically unstable.

16. The method of claim 1, wherein the label characterizes at least some of the arrhythmia episodes as tachyarrhythmia episodes that should be treated with anti-tachyarrhythmia therapy or those that should not be treated with anti-tachyarrhythmia therapy.

17. The method of claim 1, wherein at least one of algorithmically arranging, receiving the user-selected label, and algorithmically appending the label is implementable by the implantable cardiac device.

18. The method of claim 1, wherein at least one of algorithmically arranging, presenting the at least one episode to the user, receiving the user-selected label, and algorithmically appending is implemented by a processor external of the implantable cardiac device.

19. A system, comprising:

cardiac electrodes and sensing circuitry configured to acquire data associated with cardiac episodes;

a user interface configured to present data of a selected cardiac episode to a user and to receive a user-selected label for the episode; and

a data processor configured to arrange the cardiac episode data based on one or more discriminating features of the episodes and to append the label to the data of the selected cardiac episode and to data of other cardiac episodes having features that are similar to the discriminating features.

20. The system of claim 19, wherein the data associated with the cardiac episodes comprises cardiac signal data.

21. The system of claim 20, further comprising at least one sensor configured to acquire physiological or non-physiological data other than the cardiac signal data.

22. The system of claim 19, wherein at least one of the cardiac electrodes and sensing circuitry and data processor are components of an implantable cardiac device.

23. The system of claim 19, wherein:

the cardiac electrodes and sensing circuitry are components of an implantable device; and

the user interface and data processor are components of a non-implantable device.

24. The system of claim 19, wherein the cardiac episodes are tachyarrhythmia episodes.

25. The system of claim 19, wherein the labeled episode data is used to form a morphology template for discriminating cardiac rhythms.

26. The system of claim 19, wherein arranging the cardiac episode data comprises ordering the cardiac episode data.

27. The system of claim 19, wherein arranging the cardiac episode data comprises grouping the cardiac episode data.

28. A system comprising:

means for algorithmically arranging the cardiac episodes based on one or more discriminating features of the episodes;

means for presenting, to a user, at least one episode selected from the arrangement of cardiac episodes;

means for receiving a user-selected label that characterizes the selected episode and appending the label to the data of the selected episode, and

means for algorithmically appending the label to the data of other episodes of the arrangement of cardiac episodes.

29. The system of claim 28, further comprising means for arranging the episodes based on similarity of the one or more discriminating features.

30. The system of claim 28, further comprising means for grouping the episodes based on the one or more discriminating features.

31. The system of claim 28, further comprising means for ordering the episodes based on the one or more discriminating features.