Dual chamber pacing system with dynamic physiological tracking and method of timing delivered stimulus for optimized synchronous pacing

摘要: A dual chamber pacemaker system is provided having means for determining when sensed atrial signals have a physiological rate, and tracking only such as are found to rates. The provides logic continuously rate function of whereby substantially tracks the signals. also determines dynamic decision rates which coupled follow rate. comprise pacing limit, sets escape interval; upper limit range tracked; Wenckebach defines range. enables time out an AV delay synchronizing delivery ventricular pulses with respect heartbeats occur within between i.e., Synchronized delivered both signal scheduled synchronized determined sensing all except short PVAB limits extent required block far field R-waves.