Apparatus for in vivo intracardial of a measured signal corresponding to the physical activity of a subject and a heart pacemaker having a stimulation rate controlled thereby

摘要

An apparatus for the in vivo intracardial acquisition of a measured signal corresponding to the physical activity of a subject has an optoelectronic arrangement measuring the blood oxygen content of the subject and a temperature sensor for measuring the blood temperature. The apparatus can be operated so that a measured signal can be obtained which is optionally dependent on the blood oxygen content and the blood temperature, dependent only on the blood oxygen content, or dependent only on the blood temperature.