Interactive method of performing cardipulmonary resuscitation with minimal delay to defibrillation shocks

• US 6,553,257 B2
• Filed: 03/13/2001
• Issued: 04/22/2003
• Est. Priority Date: 03/13/2001
• Status: Expired due to Term

• Current Assignee: Agilent Technologies Europe BV (Agilent Technologies, Inc.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Snyder, David, Morgan, Carlton
• Primary Examiner(s): Getzow, Scott M.
• Application Number:
  US09/804,398
• Publication Number:
  US 20020133197A1
• Time in Patent Office: 770 Days
• Field of Search: 607/5, 607/6, 607/7, 607/8
• US Class Current: 607/5
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/3987 characterised by the timing or triggering of the shock

Abstract

A method for reducing delay between termination of cardiopulmonary resuscitation and administration of a defibrillating shock. An electrocardiogram signal of the patient is monitored during administration of cardiopulmonary resuscitation to a patient. The electrocardiogram signal is analyzed to determine whether a shockable rhythm exists. It is indicated that a shockable rhythm exists and/or that a defibrillating shock will be administered. Cardiopulmonary resuscitation is stopped. The defibrillating shock is administered within 10 seconds of the cessation of cardiopulmonary resuscitation.

Claims

1. A method for reducing delay between termination of cardiopulmonary resuscitation and administration of a defibrillating shock, the method comprising:

monitoring an electrocardiogram signal of the patient during administration of cardiopulmonary resuscitation to a patient;

analyzing the electrocardiogram signal to determine whether a shockable rhythm exists;

indicating at least one of that a shockable rhythm exists and that a defibrillating shock will be administered;

ceasing cardiopulmonary resuscitation; and

administering the defibrillating shock within 10 seconds of the cessation of cardiopulmonary resuscitation.

2. The method according to claim 1, further comprising:

indicating that cardiopulmonary resuscitation should cease upon detecting a shockable rhythm.

3. The method according to claim 2, further comprising:

indicating that a defibrillating shock will be administered when indicating that a shockable rhythm exists and that cardiopulmonary resuscitation should cease.

4. The method according to claim 1, further comprising:

during the administering of the cardiopulmonary resuscitation automatically charging a defibrillator if the electrocardiogram signal indicates that the patient has a shockable rhythm.

5. The method according to claim 1, wherein the indication comprises at least one of audible indications and visual indication.

6. The method according to claim 1, wherein the indication comprises audible indications comprising spoken words.

7. The method according to claim 1, further comprising:

periodically indicating when a chest compression should occur during the cardiopulmonary resuscitation.

8. The method according to claim 7, wherein the analysis of the electrocardiogram signal takes in to account occurrence of chest compressions.

9. The method according to claim 7, wherein the periodic indication comprises at least one of an audible and visual indication.

10. The method according to claim 1, further comprising:

verifying that a shockable rhythm exists subsequent to termination of cardiopulmonary resuscitation and prior to administration of a shockable rhythm.

11. The method according to claim 1, further comprising:

indicating that administration of cardiopulmonary resuscitation should be resumed subsequent to administration of the defibrillating shock.

12. The method according to claim 1, further comprising:

indicating that administration of cardiopulmonary resuscitation should resume; and

resuming monitoring an electrocardiogram signal of the patient and analyzing the electrocardiogram signal to determine whether a shockable rhythm exists subsequent to administration of a defibrillating shock.

13. The method according to claim 1, wherein the defibrillator is an automatic defibrillator.

14. The method according to claim 1, wherein the defibrillator is a semi-automatic defibrillator.

15. A method for reducing delay between termination of cardiopulmonary resuscitation and administration of a defibrillating shock, the method comprising:

monitoring an electrocardiogram signal of the patient during administration of cardiopulmonary resuscitation to a patient;

analyzing the electrocardiogram signal to determine whether a shockable rhythm exists during administration of cardiopulmonary resuscitation to the patient; and

automatically charging a defibrillator during the administering of the cardiopulmonary resuscitation.

16. A defibrillator, comprising:

electrodes for monitoring a patient'"'"'s heart rhythm during administration of cardiopulmonary resuscitation and producing an electrocardiogram signal corresponding to the patient'"'"'s heart rhythm;

a processor operatively connected to the electrodes for receiving the electrocardiogram signal from the electrodes, analyzing the patient'"'"'s heart rhythm to detect a shockable rhythm;

an indicator operatively connected to the processor for indicating at least one of that a shockable rhythm exists and that a defibrillating shock is to be administered; and

electrodes operatively connected to the power source for administering a defibrillating shock to the patient within ten seconds of cessation of cardiopulmonary resuscitation,

wherein the indicator indicates that a defibrillating shock will be administered to the patient within ten seconds of the indication upon detection of a shockable rhythm.

17. The defibrillator according to claim 16, wherein the processor automatically initiates charging of the defibrillator upon detection of a shockable rhythm.

18. The defibrillator according to claim 16, wherein the electrodes for monitoring the patient'"'"'s heart rhythm and administering a defibrillating shock to the patient are the same electrodes.

19. The defibrillator according to claim 16, wherein the defibrillator is an automatic external defibrillator.

20. The defibrillator according to claim 16, wherein the defibrillator is a semi-automatic external defibrillator.

21. The defibrillator according to claim 16, wherein the indicator produces at least one of audible and visual indication.

22. The defibrillator according to claim 16, wherein the indicator produces audible indications comprising spoken words.

23. The defibrillator according to claim 16, wherein the indicator indicates indicating when chest compressions should be administered to a patient.

24. The defibrillator according to claim 16, wherein the processor verifies that a shockable rhythm exists subsequent to termination of cardiopulmonary resuscitation and prior to administration of a shockable rhythm.

25. The defibrillator according to claim 16, wherein the indicator indicates that administration of cardiopulmonary resuscitation should cease and an area in the vicinity of the patient should be cleared prior to administration of the defibrillating shock and indicates that administration of cardiopulmonary resuscitation should be resumed subsequent to administration of the defibrillating shock.

26. The defibrillator according to claim 16, further comprising:

a second indicator operatively connected to the processor for indicating that administration of cardiopulmonary resuscitation should cease and an area in the vicinity of the patient should be cleared prior to administration of the defibrillating shock and for indicating that administration of cardiopulmonary resuscitation should be resumed subsequent to administration of the defibrillating shock.

27. The defibrillator according to claim 16, herein the indicator indicates that administration of cardiopulmonary resuscitation should recommence, and wherein the processor resumes monitoring of the electrocardiogram signal of the patient and analyzing the electrocardiogram signal to determine whether a shockable rhythm exists subsequent to administration of a defibrillating shock.

28. The defibrillator according to claim 16, further comprising:

a second indicator for indicating that administration of cardiopulmonary resuscitation should recommence, wherein the processor resumes monitoring an electrocardiogram signal of the patient and analyzing the electrocardiogram signal to determine whether a shockable rhythm exists subsequent to administration of a defibrillating shock.

29. A defibrillator, comprising:

electrodes for monitoring a patient'"'"'s heart rhythm during administration of cardiopulmonary resuscitation and producing an electrocardiogram signal corresponding to the patient'"'"'s heart rhythm;

a processor operatively connected to the electrodes for receiving the electrocardiogram signal from the electrodes, analyzing the patient'"'"'s heart rhythm to detect a shockable rhythm;

an indicator operatively connected to the processor for indicating at least one of that a shockable rhythm exists and that a defibrillating shock is to be administered;

electrodes operatively connected to the power source for administering a defibrillating shock to the patient within ten seconds of cessation of cardiopulmonary resuscitation; and

a chest compression indicator operatively connected to the processor for periodically indicating when chest compressions should be administered to a patient,

wherein the analysis of the electrocardiogram signal takes in to account occurrence of chest compressions.

30. The defibrillator according to claim 29, wherein the periodic indication comprises at least one of an audible and visual indication.