Real-time evaluation of CPR performance

• US 8,738,129 B2
• Filed: 11/14/2011
• Issued: 05/27/2014
• Est. Priority Date: 11/12/2010
• Status: Active Grant

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Inventors: Packer, Richard A., Freeman, Gary A., Kaufman, Christopher Luke
• Primary Examiner(s): Koharski, Christopher D
• Assistant Examiner(s): CAREY, MICHAEL JAMES
• Application Number:
  US13/295,781
• Publication Number:
  US 20120123224A1
• Time in Patent Office: 925 Days
• Field of Search: 607/6, 607/5, 128/202.28
• US Class Current: 607/6
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/1135 by monitoring thoracic expansion
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/339 Displays specially adapted therefor
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/7405 using sound
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61N 1/3987 characterised by the timing or triggering of the shock
• CPC Class Codes: G16H 20/30 relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/20 for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A computer-implemented method for providing summary information for lifesaving activities is disclosed. The method involves sensing one or more activities that are repeatedly and cyclically performed on a victim by a rescuer; identifying a cyclical timing interval over which performance is to be analyzed for a integer number of cycles of the one or more activities, and gathering data from the sensing of the one or more activities during the time interval; generating, from analysis of the one or more activities, summary data that condenses data sensed for the one or more activities into a summary of the one or more activities; and providing, for display to a user, a visual summary of the performance of the one or more activities over the identified time interval.

Claims

1. A computer-implemented method for providing summary information for lifesaving activities, the method comprising

sensing one or more activities that are repeatedly and cyclically performed on a victim by a rescuer;

identifying a cyclical timing interval over which performance is to be analyzed for a integer number of cycles of the one or more activities, and gathering data from the sensing of the one or more activities during the time interval;

generating, from analysis of the one or more activities, summary data that condenses data sensed for the one or more activities into a summary of the one or more activities, wherein the summary data identifies both rate and amplitude information that reflect a rate and amplitude at which the rescuer performed at least one of the activities; and

providing, for display to a user, a visual summary of the performance of the one or more activities over the identified time interval, the visual summary of the performance indicating a quality of performance of the at least one of the activities based on a combination of the rate and amplitude information that reflect a rate and amplitude at which the rescuer performed at least one of the activities.

2. The method of claim 1, wherein the sensors comprise one or more sensors selected from a group consisting of chest compression sensors, patient ventilation sensors, and electrocardiogram sensors.

3. The method of claim 1, wherein providing the visual summary for display comprises wirelessly transmitting data about the one or more activities from a device that senses the one or more activities to a remote device having a visual display.

4. The method of claim 3, wherein the remote device is located in a rescue vehicle proximate to the device that senses the one or more activities.

5. The method of claim 3, wherein the device that senses the one or more activities is wirelessly connected to the sensors.

6. The method of claim 3, wherein the remote device is located in a central medical facility that is distant from the device that senses the one or more activities, and data for generating the visual summary is provided by transmission through a public data network.

7. The method of claim 1, wherein the summary comprises a score that indicates by one or more alpha-numeric indicators, a quality level with which the one or more activities were performed, the score being based on two different readings from the activities, the different readings overlapping in time but having different time periods than each other.

8. The method of claim 1, wherein the visual summary is provided for display on multiple devices simultaneously.

9. The method of claim 1, further comprising monitoring electrocardiogram data of the victim while the one or more activities are occurring, and providing with a defibrillator at least one of charging the defibrillator and shocking the victim without manual intervention of a rescuer.

10. The method of claim 1, wherein generating summary data comprises generating a single data value from information received from measurement of two or more distinct actions performed on the victim.

11. The method of claim 1, further comprising combining the summary data for the victim with corresponding summary data for a plurality of other victims for use in code review.

33. The method of claim 1, wherein the cyclical timing interval comprises sequential performance of a cyclical cardiopulmonary resuscitation protocol defined by a standardization body.

34. The method of claim 33, wherein the cyclical timing interval comprises analysis for a shockable rhythm of the patient and chest compressions performed on the patient.

35. The method of claim 1, further comprising, at the end of each cyclical timing interval, generating values that indicate levels of performance of the one or more activities during a preceding timing interval.

36. The method of claim 1, further comprising instructing the rescuer to change a manner of performing the at least one of the activities.

37. The method of claim 36, wherein instructing the rescuer to change a manner of performing the at least one of the activities comprises instructing the rescuer to turn over the at least one of the activities to performance by another rescuer.

12. A computer-implemented system for providing summary information for lifesaving activities, the system comprising:

a patient monitor having an interface for receiving signals from one or more patient-connected sensors;

a rescuer performance analysis system programmed using stored instructions to incorporate data representative of a plurality of activities performed on a patient by a rescuer in the form of primary indications, and to generate secondary indications of the performance of cardiopulmonary resuscitation on the patient from the data, wherein the primary indications correspond to both rate and amplitude information that reflect a rate and amplitude at which the rescuer has performed at least one of the activities, and at least some of the secondary indications correspond to a combination of the rate and amplitude information into a single indicator of performance; and

one or more user interfaces to provide audible or visual indications of the generated secondary indications, the audible or visual indication indicating a quality of performance of the at least one of the plurality of activities based on a combination of the rate and amplitude information.

13. The system of claim 12, wherein the system is arranged to display, simultaneously, the primary indications, and the secondary indications of activity performed on the patient that are derived from one or more of the primary indications of activities performed on the patient.

14. The system of claim 13, wherein the primary indications comprise rate and depth of chest compression, and the secondary indications comprise average rates and depths of chest compression over historical time periods.

15. The system of claim 13, wherein the primary indications comprise real-time values for activities currently being performed on the patient, and the secondary indications comprise historical values for corresponding activities previously performed on the patient.

16. The system of claim 15, wherein the primary values are presented as real-time data, and the secondary values are presented as averages for previous CPR intervals.

17. The system of claim 13, wherein the patient monitor and rescuer performance analysis system are integrated into a portable patient defibrillator.

18. The system of claim 13, further comprising a wireless interface arranged to transmit data about the primary and secondary indications to a remote system for presentation of graphical representations of the activities performed on the patient.

19. The system of claim 18, wherein the remote system is programmed to identify a rescuer common to multiple incidents and patients and to provide a display of data that shows performance by the rescuer across the multiple incidents and patients.

20. A computer-implemented system for providing summary information for lifesaving activities, the system comprising:

a patient monitor having an interface for receiving signals from one or more patient-connected sensors;

means for generating primary and secondary indications of cardiopulmonary resuscitation on a patent, the primary indications being direct representations of data measured from the patent, and the secondary indications being derived representations generated from one or more of the primary representations, wherein the primary indications correspond to both rate and amplitude information that reflect a rate and amplitude at which the rescuer performed at least one of the activities, and at least some of the secondary indications correspond to a combination of the rate and amplitude information into a single indicator of performance; and

one or more user interfaces to provide audible or visual indications of the generated secondary indications, the audible or visual indication indicating a quality of performance of the at least one of the plurality of activities based on a combination of the rate and amplitude information.

21. The system of claim 20, wherein the system is arranged to display, simultaneously, the primary indications, and the secondary indications of activity performed on the patient that are derived from one or more of the primary indications of activities performed on the patient.

22. The system of claim 20, wherein the primary indications comprise real-time values for activities currently being performed on the patient, and the secondary indications comprise historical values for corresponding activities previously performed on the patient.

23. The system of claim 20, wherein the patient monitor and rescuer performance analysis system are integrated into a portable patient defibrillator.

24. The system of claim 20, further comprising a wireless interface arranged to transmit data about the primary and secondary indications to a remote system for presentation of graphical representations of the activities performed on the patient.

25. One or more computer-readable, non-nontransitory media having recorded thereon instructions that, when executed by a computer processor, perform operations comprising:

receiving data from one or more activities sensed as having been repeatedly and cyclically performed on a victim by a rescuer;

identifying a cyclical timing interval over which performance is to be analyzed for a integer number of cycles of the one or more activities, and gathering data from the sensing of the one or more activities during the time interval;

generating, from analysis of the one or more activities, summary data that condenses data sensed for the one or more activities into a summary of the one or more activities, wherein the summary data identifies both rate and amplitude information that reflect a rate and amplitude at which the rescuer performed at least one of the activities; and

providing, for display to a user, a visual summary of the performance of the one or more activities over the identified time interval, the visual summary of the performance indicating a quality of performance of the at least one of the activities based on a combination of the rate and amplitude information that reflect a rate and amplitude at which the rescuer performed at least one of the activities.

26. The recordable media of claim 25, wherein the one or more activities are sensed by one or more sensors selected from a group consisting of chest compression sensors, patient ventilation sensors, and electrocardiogram sensors.

27. The recordable media of claim 25, wherein providing the visual summary for display comprises wirelessly transmitting data about the one or more activities from a device that senses the one or more activities to a remote device having a visual display.

28. The recordable media of claim 25, wherein the remote device is located in a rescue vehicle proximate to the device that senses the one or more activities.

29. The recordable media of claim 25, wherein the summary comprises a score that indicates by one or more alpha-numeric indicators, a quality level with which the one or more activities were performed, the score being based on two different readings from the activities, the different readings overlapping in time but having different time periods than each other.

30. The recordable media of claim 25, wherein the visual summary is provided for display on multiple devices simultaneously.

31. The recordable media of claim 25, wherein the operations further comprise monitoring electrocardiogram data of the victim while the one or more activities are occurring, and providing with a defibrillator at least one of charging the defibrillator and shocking the victim without manual intervention of a rescuer.

32. The recordable media of claim 25, wherein generating summary data comprises generating a single data value from information received from measurement of two or more distinct actions performed on the victim.