Methods for testing automatic mode switching in patients implanted with DDD(R) pacemakers

Chu P. Lau, Franco Mascia, Giorgio Corbucci, Luigi Padeletti

Research output: Contribution to journalArticlepeer-review


The assessment of automatic mode switching (AMS) algorithms is impossible in vivo, due to a low chance of seeing the patient at the onset of a spontaneous episode of atrial fibrillation (AF). As the induction of AF to test AMS has clinical concerns, three alternative and non-invasive techniques may be proposed for this purpose: myopotentials, chest wall stimulation, and an external supraventricular arrhythmia simulator. The first method is simple and does not require additional equipment, even though in some patients adequate signals cannot be generated with a soft effort such as handgrip or hand compression. The main advantage of the chest wall stimulation method is the possibility that it be performed in every implanting center, since it is based on the use of standard devices for cardiac stimulation. The method based on the external supraventricular arrhythmia simulator allows the most detailed of the ECG traces, but it needs a dedicated electronic device.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalItalian Heart Journal
Issue number1
Publication statusPublished - Jan 2004


  • Atrial fibrillation
  • Pacemaker
  • Supraventricular tachyarrhythmias

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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