The Influence of Electromagnetic Environment on the Performance of Artificial Cardiac Pacemakers

摘要: he danger of producing ventricular fibrillation by passage 60-cycle alternating current (AC) through pacemaker leads atT tached to a patient’s heart has been outlined Burchell [l], Weinberg [71, Noordjik [6], and Furman [3]. Each them described patients who had died because leaked in minute quantity the via direct wired connection produced fibrillation. Whalen [8] techniques required insure that no leakage can occur into heart. A parallel problem observed somewhat more recently Carleton et al. [2], Lichter [4], Mansfield [5] . This is response implanted cardiac pacemakers presence electromagnetic fields or intracorporeal currents without contact with its lead system. earlier studies [ 1, 3, 6-83 included only asynchronous pacemakers. With development atrial synchronous, demand pacemakers, an effort made determine sensitivity 10 types effects low-frequency range l cycle per second 100 kilocycles impulses resulting from electrical corona. In each instance variety response, i.e., increase rate, erratic change triggered fixed cessation function, determined.