Long-term follow-up of DDD and VDD pacing: a prospective non randomized single-centre comparison of patients with symptomatic atrioventricular block
- S Marchandise, C Scaveé, JB Polain de Waroux, V Meester, JL Vanoverschelde, N. Debbas
INTRODUCTION AND OBJECTIVES To describe the results of the analysis of pacemaker implantations reported to the Spanish Pacemaker Registry in 2011, with particular reference to the population distribution and the selection of pacing modes. METHODS Information provided by the European Pacemaker Patient Identification Card was processed using a purpose-built computer application. RESULTS Data from 115 hospitals were analyzed, totaling 13,373 cards, representing an estimated 38% of implantations. The number of pacemaker generators and resynchronization devices implanted was 738 and 56.2 units per million population, respectively. The mean age of the patients who received a device was 76.7 years. Overall, 57.2% of first implantations and 56.5% of replacements were performed in men. Most implantations (38.7%) and generator replacements (41.9%) were performed in patients aged between 80 and 89 years. Of the pacemaker leads used, 99.7% were bipolar and 63% used an active fixation system. Overall, 20% of the patients with atrioventricular block or sick sinus syndrome were paced in VVI/R mode despite being in sinus rhythm. CONCLUSIONS With respect to previous years, the use of conventional pacemakers remained stable and the implantation of resynchronization devices has increased. The number of implantation procedures continues to be higher in men and in younger patients. Age and the degree of blockage remain as factors influencing the appropriate choice of pacing mode.