Multidirectional ECG coherent optimal timing of defibrillation s

Details Multidirectional ECG coherent optimal timing of defibrillation s Multidirectional ECG coherent optimal timing of defibrillation s

1995-10-17

1998-04-21

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

128705, A61N 139, A61B 5046

Patent

active

057413045

ABSTRACT:
A method for of delivering a defibrillation shock to a heart at an optimal time to stop ventricular fibrillation which involves obtaining an electrocardiogram of a heart in at least two directions, determining a time-coherency of the electrocardiogram based upon each of the at least two directions, and computing a tracking function from the time-coherency. An optimal time to apply a defibrillation shock to the heart is determined by locating a local maximum on the tracking function. The method utilizes spacia characteristics of the ventricular fibrillation. The method can be incorporated into implantable cardioverter defibrillators utilizing existing hardware technology.

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