[Neurophysiological findings concerning geriatric patients with pacemaker (author's transl)]

Since 1977 neurologic-psychiatric as well as EEG-measurements have been compared in patients before and up to 2 years after implantation of permanent pacemaker system. Standardized EEG-measurements of a conventional method and EEG-spectrograms, so far executed in 138 cases, showed better cerebral blood supply and improvement of metabolic data in patients suffering from chromic bradyrhythmia (67 cases). Measurements in patients with acute disturbances in cardiac rhythm (38 cases) remained approximately the same before and after pacemaker implantation. Special cardiologic measurements combined with EEG-findings confirmed the assumption that the symptoms observed in 8 patients with "passage syndromes" during the postoperative phase were caused by a cerebral oxygen deficiency.