[Significance of risk factors of functional disorders of pacemakers (author's transl)].

In spite of increasing reliability of pacemakers and expensive electronic monitoring systems unforeseen disorders of the regular stimulation of the heart cannot be prevented with certainty. Criteria are given by which the individual risk of the carrier of a pacemaker can be determined, so that the degree of danger can be foreseen. Individual methods of monitoring and in particular checking intervals adapted to the risk are suggested.