Methods, systems and computer program products to inhibit ventricular fibrillation during cardiopulmonary resuscitation
AssigneeThe UAB Research Foundation
InventorsRaymond E. Ideker, Gregory P. Walcott
Life of this patent
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Abstract
Methods, systems and computer program products determine and identify a favorable time to deliver cardiac compression to a subject to avoid a vulnerable period of a spontaneous intrinsic cardiac cycle.
Claims32
A method for performing chest compression during cardiopulmonary resuscitation (CPR), comprising;
- sensing a parameter corresponding to a measure of intrinsic spontaneous cardiac activity of a heart in a subject undergoing CPR;
- identifying a vulnerable portion of an intrinsic spontaneous cardiac cycle of the subject;
- and
- compressing the heart of the subject during a non-vulnerable portion of the spontaneous intrinsic cardiac cycle that avoids a vulnerable period of the spontaneous intrinsic cardiac cycle based on the identifying step thereby inhibiting reinduction of fibrillation and/or improving cardiac function.
A system for assisting in chest compression in a subject having cardiomalfunction, comprising:
- at least one cardiac activity sensor in communication with the heart of a subject configured to detect a cardiac activity parameter;
- and
- a controller in communication with the at least one cardiac activity sensor, wherein, in operation, the at least one cardiac activity sensor transmits data to the controller regarding a spontaneous intrinsic cardiac cycle of the subject and the controller identifies a favorable time to deliver a chest compression based on the transmitted sensor data to avoid a vulnerable portion of the spontaneous intrinsic cardiac cycle, wherein the controller identifies a time that does not overlap with the T wave portion of the spontaneous intrinsic cardiac cycle.
A system for assisting in chest compression in a subject having cardiomalfunction, comprising:
- at least one cardiac activity sensor in communication with the heart of a subject configured to detect a cardiac activity parameter;
- and
- a controller in communication with the at least one cardiac activity sensor, wherein, in operation, the at least one cardiac activity sensor transmits data to the controller regarding a spontaneous intrinsic cardiac cycle of the subject and the controller identifies a favorable time to deliver a chest compression based on the transmitted sensor data to avoid a vulnerable portion of the spontaneous intrinsic cardiac cycle, further comprising an audible alert in communication with the controller, the controller configured to output an audible alert signal responsive to an identified favorable time to deliver a chest compression to the subject based on the transmitted sensor data.
A computer program product for timing the delivery of cardiac compression during CPR, the computer program product comprising:
- a computer readable storage medium having computer readable program code embodied in said medium, said computer-readable program code comprising:
- computer readable program code that identifies a vulnerable portion of an intrinsic spontaneous cardiac cycle of the subject;
- and
- computer readable program code that determines a favorable time to deliver cardiac compression to a subject to avoid a vulnerable period of the spontaneous intrinsic cardiac cycle.
Dependencies are inferred from the claim text.