A cardiac pacer for pacing a heart.

摘要

A cardiac pacer, which generates pacing pulses (15) at a predetermined pacing rate comprises a device (7) for realizing a body activity measurement. The measured body activity signal is non-linearly amplified in a manner that signal portions having higher amplitudes are more amplified than signal portions having lower amplitudes. Furthermore, the non-linearly amplified body activity signal is integrated over a period of time. Finally the predetermined pacing rate is varied dependent on the integrated signal.