CPR TIME INDICATOR FOR A DEFIBRILLATOR DATA MANAGEMENT SYSTEM

• US 20100152800A1
• Filed: 02/25/2010
• Published: 06/17/2010
• Est. Priority Date: 01/31/2005
• Status: Active Grant

• Current Assignee: Physio-Control Incorporated (Stryker Corporation)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Chapman, Fred William, Walker, Robert G.
• Granted Patent: US 8,060,199 B2
• Time in Patent Office: Days
• US Class Current: 607/5
• 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 5/0809 by impedance pneumography
• CPC Class Codes: A61B 5/361 Detecting fibrillation
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2201/5043 Displays
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators
• CPC Class Codes: G09B 23/288 for artificial respiration or heart massage

Abstract

A system is disclosed wherein patient data, such as an electrocardiogram (“ECG”) signal or a chest impedance measurement signal, collected by a defibrillator device during a resuscitation event is analyzed and processed by a computing device to provide an assessment of CPR administered during the event. The CPR assessment results in one or more CPR figures of merit that relate to temporal characteristics of the CPR relative to the duration of the event. In one embodiment, the CPR figure of merit represents a percentage of the event period during which chest compressions were administered to the patient.

Claims

1-28. -28. (canceled)

29. :

An apparatus comprising a processor configured to;

receive post-event data for a patient, the post-event data representing at least one patient signal electronically captured during a resuscitation event;

analyze characteristics of the post-event data to identify periods during which chest compressions were administered to the patient;

derive a CPR figure of merit from the post-event data, the CPR figure of merit being indicative of temporal characteristics of CPR administered to the patient, relative to the resuscitation event; and

obtain an event time interval for the resuscitation event,

in which the resuscitation event includes at least one interval of chest compression delivery and at least one interval of defibrillation therapy delivery, and

in which the CPR figure of merit comprises a temporal CPR percentage representing a percentage of the event time interval during which chest compressions were administered to the patient.

30. :

The apparatus of claim 29, in which the processor is further configured to analyze characteristics of the post-event data to identify times during the resuscitation event when defibrillation pulses were administered to the patient, and in which the CPR figure of merit comprises a pre-defibrillation pause indicator that represents a period between a defibrillation pulse and a final chest compression administered to the patient prior to the defibrillation pulse.

31. :

The apparatus of claim 29, in which the processor is further configured to analyze characteristics of the post-event data to identify times during the resuscitation event when defibrillation pulses were administered to the patient, and in which the CPR figure of merit comprises a post-defibrillation pause indicator that represents a period between a defibrillation pulse and an initial chest compression administered to the patient subsequent to the defibrillation pulse.

32. :

The apparatus of claim 29, in which the processor is further configured to analyze characteristics of the post-event data to identify times during the resuscitation event when individual chest compressions were administered to the patient during a CPR cycle, and in which the CPR figure of merit comprises a compression frequency indicator that represents a period between the individual chest compressions.

33. :

The apparatus of claim 29, in which the processor is further configured to analyze characteristics of the post-event data to identify CPR cycles during the resuscitation event, and in which the CPR figure of merit comprises a CPR cycle indicator that represents a period between the CPR cycles.

34. :

The apparatus of claim 29, in which the processor is further configured to generate a report containing the CPR figure of merit.

35. :

A computer-readable storage medium comprising instructions for causing a programmable processor to;

receive post-event data for a patient, the post-event data representing at least one patient signal electronically captured during a resuscitation event;

analyze characteristics of the post-event data to identify periods during which chest compressions were administered to the patient;

derive a CPR figure of merit from the post-event data, the CPR figure of merit being indicative of temporal characteristics of CPR administered to the patient, relative to the resuscitation event; and

obtain an event time interval for the resuscitation event,

in which the resuscitation event includes at least one interval of chest compression delivery and at least one interval of defibrillation therapy delivery, and

in which the CPR figure of merit comprises a temporal CPR percentage representing a percentage of the event time interval during which chest compressions were administered to the patient.

36. :

The computer-readable storage medium of claim 35, in which the instructions further comprise instructions that cause the programmable processor to analyze characteristics of the post-event data to identify times during the resuscitation event when defibrillation pulses were administered to the patient, and in which the CPR figure of merit comprises a pre-defibrillation pause indicator that represents a period between a defibrillation pulse and a final chest compression administered to the patient prior to the defibrillation pulse.

37. :

The computer-readable storage medium of claim 35, in which the instructions further comprise instructions that cause the programmable processor to analyze characteristics of the post-event data to identify times during the resuscitation event when defibrillation pulses were administered to the patient, and in which the CPR figure of merit comprises a post-defibrillation pause indicator that represents a period between a defibrillation pulse and an initial chest compression administered to the patient subsequent to the defibrillation pulse.

38. :

The computer-readable storage medium of claim 35, in which the instructions further comprise instructions that cause the programmable processor to analyze characteristics of the post-event data to identify times during the resuscitation event when individual chest compressions were administered to the patient during a CPR cycle, and in which the CPR figure of merit comprises a compression frequency indicator that represents a period between the individual chest compressions.

39. :

The computer-readable storage medium of claim 35, in which the instructions further comprise instructions that cause the programmable processor to analyze characteristics of the post-event data to identify CPR cycles during the resuscitation event, and in which the CPR figure of merit comprises a CPR cycle indicator that represents a period between the CPR cycles.

40. :

The computer-readable storage medium of claim 35, in which the instructions further comprise instructions that cause the programmable processor to generate a report containing the CPR figure of merit.