title: [Clinical and biological aspects in patient with pH-triggered implanted pacemaker (author's transl)].
abstract: The Authors have selected the variations of blood pH to drive the pacing rate according to the new biological balance created by exercise. The clinical tests performed on the patients who have had a pH-triggered pacemaker implanted one year previously demonstrated that: a) during physical exercise there is an increase of cardiac rate triggered by the pacemaker, comparable with that noted when sinus rhythm is present; b) situations causing an increased production of cathecolamines and thus a pH variation--Cold Pressor Test, Ischaemic Test, as well as emotional stress--cause an increase of the stimulation rate of pH triggered pacemaker.
mesh_terms: D001769:Blood / Q000378:metabolism*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D002395:Catecholamines / Q000502:physiology; D003080:Cold Temperature; D005080:Exercise Test; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010138:Pacemaker, Artificial; D012039:Regional Blood Flow; D013315:Stress, Psychological / Q000503:physiopathology; D014666:Vasomotor System / Q000502:physiology
chemical_list: D002395:Catecholamines
vernacular_title: Aspetti clinici e biologici in pazienti portatori di pacemaker pilotato dalle variazioni del pH ematico.