Patent ID: 9002455
Filing Date: 2015-04-07
Classification: A61B,A61N

Abstract:
1. A method for use with an implantable medical device equipped for bipolar electrical stimulation and sensing of heart tissues using cardiac electrodes, the method comprising: delivering bipolar stimulus using a pair of the cardiac electrodes while sensing bipolar intracardiac electrogram (IEGM) signals using the pair of the cardiac electrodes; detecting an indication within the bipolar IEGM signals of evoked responses (ERs) representative of anodal capture within myocardial tissues associated with using the anode of the pair of the cardiac electrodes and cathodal capture within myocardial tissues associated with using the cathode of the pair of the cardiac electrodes; determining an anodal/cathodal capture threshold sufficient to achieve both anodal and cathodal capture from the indication within the bipolar IEGM signals of the ERs; and setting a magnitude for subsequent bipolar stimulus above the anodal/cathodal capture threshold to enable concurrent anodal and cathodal capture with a single stimulus pulse.