Patent ID: 8521283
Filing Date: 2013-08-27
Classification: A61N

Abstract:
1. A method for operating an implantable cardiac pacing device comprising steps of: delivering cardiac resynchronization pacing therapy using a pacing algorithm that includes a programmed pacing delay; collecting conduction time data by measuring an intrinsic cardiac conduction time and simultaneously measuring a physiological variable during a plurality of intrinsic cardiac cycles; constructing a relation between the measured conduction times and corresponding measurements of the physiological variable; deriving an optimized programmed pacing delay from the constructed relation by using a mathematical operator that expresses the optimized programmed pacing delay as a function of intrinsic cardiac conduction time; and, updating the conduction time data by intermittently lengthening a pacing escape interval for a predetermined number of beats to prevent pacing and allow measurement of intrinsic conduction times.