A CARDIAC STIMULATING DEVICE

摘要

The invention concerns an implantable cardiac stimulating device (10). The device (10) comprises means (22) for varying the rate of the stimulating pulses up to a maximum pacing rate (M). Means (24) are arranged for sensing at least one evoked response parameter to the delivered stimulating pulses (21). The device (10) comprises means (26) for measuring a time gap (G) between a stimulating pulse (21) and the associated evoked response parameter. According to the invention, the maximum pacing rate (M) is lowered if said time gap (G) does not decrease with increasing pacing rate.