title: [Modifications and control of the myocardial threshold with the Vario pacemaker EM 169 (author's transl)].
abstract: Measurements of threshold of electrical stimulation were performed in thirty patients with A-V block, at the time of implantation of the pacemaker, after 10 days, 1-2 months and 1 year. The Vario-pacemaker was used for the measurements. An increase in the stimulation threshold of about 260% was noted after 10 days and 1-2 months. One year after the implantation of the pacemaker, the myocardial threshold was about 200% of the initial value. The method is easy to perform. It is very useful to follow the myocardial threshold changes for a long period after the implantation.
mesh_terms: D004562:Electrocardiography; D005500:Follow-Up Studies; D006327:Heart Block / Q000503:physiopathology / Q000628:therapy*; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D010138:Pacemaker, Artificial / Q000295:instrumentation; D013997:Time Factors
vernacular_title: Modificazioni e controllo della soglia miocardica con il Vario pacemaker EM 169