| 摘要 |
The present invention provides systems, methods, components and medical devices for defibrillating a volume of excitable myocardial tissue. In one aspect, the invention delivers therapy via a pair of electrodes spaced from myocardial tissue with a first electrode disposed in a precordial location and spaced from myocardial tissue and a second electrode disposed in a non-precordial location. Another form of the invention includes methods of delivering cardioversion, defibrillation and/or cardiac pacing therapy by sensing cardiac events with at least a pair of electrodes located in one of a submuscular and a subcutaneous position. In this form of the invention the pair of electrodes are spaced from excitable heart tissue of the subject and cardiac therapy pulses are delivered via at least a pair of electrodes at a sufficient energy level to capture at least one ventricular chamber of the subject.
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