[Interferences and cardiac pacemakers--defibrillators. Results of in vivo experiments and radio frequencies].

Interference with cardiac pacemakers and defibrillators by cellular phone and electronic article surveillance systems is shown in experimental studies with disparate findings. Interaction occurrence in real life is a convincing but rare experience. Device model, distance, power output and technology of the source are different and sometimes uncontrollable factors. As a result it remains difficult to quantify the true incidence of interaction and associated health risk. Nevertheless, simple recommendations commonly help the patients to prevent the interference.