ATRIAL TRACKING CARDIAC STIMULATOR

摘要

An atrial tracking cardiac stimulator (30) detects atrial activations of a heart (10) through an atrial lead (36) associated with at least one of the atria (12) of the heart, and delivers ventricular pacing pulses to the heart through a ventricular lead (38) associated with at least one of the ventricles (16) of the heart. The stimulator (30) includes a pulse generator (74) including an output stage (92) which delivers a pacing pulse to the atrial lead (36) for detecting atrial activations. A rejectory processor (72) times rejectory time periods responsive to detected atrial activations. The rejectory processor (72) further provides a conducted atrial activation to the pulse generator (74) when a detected atrial activation occurs outside of a rejectory time period.