Apparatus for reversing a shock decision in an automated external defibrillator

A method for reversing a shock determination by an automated external defibrillator (AED), the method comprising:

• providing a defibrillator having both a custom cardiopulmonary resuscitation (CPR) mode of operation and a scheduled CPR mode of operation,
• wherein when the defibrillator operates in the scheduled CPR mode& of operation;
• sensing time-sequential segments of electrocardiogram (ECG) data from a plurality of electrodes in communication with the defibrillator;
• analyzing each ECG data segment to determine if cardiac condition is “shock advised” or “undecided”;
• if one ECG data segment is designated as “shock advised”, then analyzing three time-consecutive subsequent ECG data segments to determine if any subsequent ECG data segments are designated as “undecided” condition;
• and
• reversing the “shock advised” determination if at least one “undecided” condition is detected over the three time-consecutive ECG data segments subsequent to a “shock advised” determination.

A method for reversing a shock determination by an automated external defibrillator (AED), the method comprising:

• providing a defibrillator having both a custom cardiopulmonary resuscitation (CPR) mode of operation and a scheduled CPR mode of operation,
• wherein when the defibrillator operates in the custom mode of operation:
• sensing time-sequential segments of electrocardiogram (ECG) data from a plurality of electrodes in communication with the defibrillator;
• analyzing each ECG data segment to determine if cardiac condition is “shock advised” or “undecided”;
• if one ECG data segment is designated as “shock advised”, then analyzing three time-consecutive subsequent ECG data segments to determine if any subsequent ECG data segments are designated as “undecided” condition;
• reversing the “shock advised” determination if at least one “undecided” condition& is detected over the three time-consecutive ECG data segments subsequent to a “shock advised” determination;
• if three consecutive ECG data segments are designated as “shock advised”, charging and arming the AED for shock delivery;
• and
• wherein reversing of the shock determination is not enabled once the AED has entered the armed state of operation.