[Modification of cardiac pacemakers of the MCP and LCP series by electrodiagnostic and electrotherapy procedures]

47 patients with cardiac pacemakers of the MCP- and LCP-series were examined for influence by disturbances caused by devices of electrodiagnostics and electrotherapy used in the GDR. A general prohibition of such diagnostic and therapeutic methods cannot be maintained. Low frequency current therapy (apart from TENS-currents), hydrogalvanic baths and ultrasonic therapy could be applied without any danger. In the CP-current should be guaranteed a minimum distance of 50 cm, when it fell short of, however, only insignificant disturbances appeared. The same concerns the microwave therapy. Also electrodiagnostics was possible without endangering the pacemaker-patient. TENS-currents caused, depending on distance and frequency, no disturbances or dangerous ones (total inhibition). Short-wave repeatedly led to total inhibition or warming at the cardiac pacemaker and should therefore generally be forbidden.