title: [Spanish implantable cardioverter-defibrillator registry. First official report of the spanish society of cardiology working group on implantable cardioverter-defibrillators (2002-2004)].
abstract: OBJECTIVE
  To report the 2002-2004 findings of the Spanish National Implantable Cardioverter-Defibrillator (ICD) Registry, established by the Spanish Society of Cardiology Working Group on Implantable Cardioverter-Defibrillators.
  
  
  METHODS
  Data were collected prospectively after implantation using a single-page questionnaire returned to the Spanish Society of Cardiology. Participation was voluntary.
  
  
  RESULTS
  The registry received reports on 925, 1,046 and 1414 implants, respectively, in the years 2002, 2003 and 2004. These figures represent 63%, 59% and 67.5%, respectively, of the total number of ICDs implanted. The reported implantation rates were 22, 24 and 33 per million, respectively, and the estimated total implantation rates were 35, 41 and 49, per million, respectively. The number of device replacements increased from 20% to 30% between 2002 and 2004. The majority of patients were male, their median age was 66 years, they had severe or moderate left ventricular dysfunction, and they were in functional class I or II. The most common underlying heart disease was ischemic heart disease. The main indications for an ICD were sustained monomorphic ventricular tachycardia and aborted sudden cardiac death, though the number of prophylactic indications has increased. Most ICDs were implanted in an electrophysiology laboratory by a cardiac electrophysiologist. The implantation rates of dual-chamber ICDs and ICDs with cardiac resynchronization therapy were approximately 30% and 15%, respectively. Very few complications occurred during implantation.
  
  
  CONCLUSIONS
  The Spanish National ICD Registry contains a representative sample of ICD implantations performed in the country. The registry is one of the largest reported.
authors.affiliation: Grupo de Trabajo de Desfibrilador Implantable, Sección de Electrofisiología y Arritmias, Sociedad Española de Cardiología, Madrid, Spain. rpeinado@secardiologia.es
authors.forename: Rafael
authors.initials: R
authors.lastname: Peinado
authors.forename: Angel
authors.initials: A
authors.lastname: Arenal
authors.forename: Fernando
authors.initials: F
authors.lastname: Arribas
authors.forename: Esteban
authors.initials: E
authors.lastname: Torrecilla
authors.forename: Miguel
authors.initials: M
authors.lastname: Alvarez
authors.forename: José M
authors.initials: JM
authors.lastname: Ormaetxe
authors.forename: Nicasio
authors.initials: N
authors.lastname: Pérez-Castellano
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002309:Cardiology / Q000706:statistics & numerical data; D002648:Child; D002675:Child, Preschool; D017147:Defibrillators, Implantable / Q000706:statistics & numerical data*; D005260:Female; D006331:Heart Diseases / Q000453:epidemiology / Q000628:therapy; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012042:Registries / Q000706:statistics & numerical data*; D013030:Spain / Q000453:epidemiology