Patent ID: 8244351
Filing Date: 2012-08-14
Classification: A61N

Abstract:
1. A method of programming an implantable cardiac rhythm management device to avoid unnecessary ventricular pacing, the method comprising: measuring an intrinsic conducted AV interval at a first heart rate or interval, wherein the intrinsic conducted AV interval is initiated by either a sensed or paced atrial contraction and is concluded by a sensed ventricular contraction; measuring the first heart rate or interval; automatically measuring or automatically extrapolating intrinsic conducted AV intervals at heart rates or intervals that are different from the first heart rate or interval to determine a measured or predicted intrinsic conducted AV interval as a function of different heart rates or intervals, wherein the automatically extrapolating includes using the measured intrinsic conducted AV interval at the measured first heart rate or interval and the measured first heart rate or interval for performing the extrapolating; determining a dynamic post ventricular atrial refractory period (PVARP), including: automatically providing a dynamic AV delay interval, based upon the measured or predicted intrinsic conducted AV interval as a function of the different heart rates or intervals and using the dynamic PVARP, such that the dynamic AV delay interval is longer than the measured or predicted intrinsic conducted AV interval at each of the different heart rates or intervals.