The present invention provides apparatus and methods for delivering an optimum electrical shock in treating cardiac arrhythmias. The apparatus comprises means for producing an electrical waveform signal at least two electrodes The voltage or current of the signal is then detected to determine the signal...http://www.google.com/patents/US20010053925?utm_source=gb-gplus-sharePatent US20010053925 - Method and apparatus for delivering an optimum shock duration in treating cardiac arrhythmias
