A method and apparatus for evaluating heart rate variability of the heart of a person in order to forecast a cardiac event. A cardiac stimulator receives heart beat signals from the heart and determines a measurement of heart rate variability based on statistical data derived from the heart beat signals...http://www.google.es/patents/US6571122?utm_source=gb-gplus-sharePatente US6571122 - Implantable medical device responsive to heart rate variability analysis
Implantable medical device responsive to heart rate variability analysis