Spanish Registry of Pacemakers. Second Official Report of the Working Group on Cardiac Stimulation of the Spanish Society of Cardiology (1994-2003)

This report describes the data of the Spanish Registry of Pacemakers, based on the European Pacemaker Identification Card, and the changes in the use of different stimulation modes since 1994. Of note is the significant and steady change towards more physiological modes of stimulation (which maintain atrioventricular synchrony). These modes accounted in 2003 for 69.9% among patients with sick sinus syndrome and 67.7% among patients with atrioventricular block. In the population less than 80 years of age these percentages were 78% for sick sinus syndrome and 78.7% for atrioventricular block. The vast majority of electrodes implanted for stimulation were bipolar.