Patent ID: 6912418
Filing Date: 2005-06-28
Classification: A61B,A61N

Abstract:
1. A method for discriminating electrical events originating in the atria from other electrical events using an implantable medical device receiving signals detected from within an atrium of the heart and receiving signals detected from within a ventricle of the heart, the method comprising: detecting electrical events in the atrium of the heart; determining, for each electrical event detected within the atrium, whether a characteristic of the electrical event matches a predetermined template representative of characteristics of true electrical events occurring within the atrium and, if not, rejecting the electrical event of the atrium as not being a true atrial event; detecting an electrical event within the ventricle of the heart; and determining whether the electrical event occurring within the ventricle was detected within a predetermined preventricular blanking interval following detection of an electrical event occurring within the atrium and, if so, rejecting the electrical event of the atrium as being a far-field electrical event of the ventricle.