title: [Assessment of the left ventricular function in patients with pacemakers VVI and DDD, using non-invasive methods (systolic time)].
abstract: OBJECTIVE
  Determination of left ventricular function, in patients with ventricular inhibited (VVI) and atrioventricular universal (DDD) pacemakers, by measurement of systolic time intervals.
  
  
  METHODS
  Twenty six patients were studied (six with DDD pacemakers and twenty with VVI pacemakers). In all of them systolic time intervals measurements were obtained the day before and one week after the implant.
  
  
  METHODS
  We have studied twenty six patients consecutively, and all of them completed the study.
  
  
  METHODS
  The measurement of systolic time intervals was obtained, by the simultaneous recording of ECG, phonocardiogram and carotid arterial pulse. The recordings were obtained at a paper speed of 100 mm/sec.
  
  
  RESULTS
  The values obtained before the implantation were similar in both groups, but one week after implantation they show a closer to normal ventricular function, in patients with DDD pacemakers.
  
  
  CONCLUSIONS
  The measurements of systolic time intervals, is a very easy method, to determine left ventricular function non invasively. In patients with DDD pacemakers, the left ventricular function, was better than in patients with VVI pacemakers.
authors.affiliation: Cadeira de Medicina II (Cardiologia), Faculdade de Medicina e Serviço de Cardiologia, Hospitais da Universidade de Coimbra.
authors.forename: H
authors.initials: H
authors.lastname: Faria
authors.forename: L A
authors.initials: LA
authors.lastname: Providência
authors.forename: C
authors.initials: C
authors.lastname: Andrade
authors.forename: F
authors.initials: F
authors.lastname: Paisana
authors.forename: V
authors.initials: V
authors.lastname: Monteiro
authors.forename: M
authors.initials: M
authors.lastname: Lucete
authors.forename: M M
authors.initials: MM
authors.lastname: Lopes
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013599:Systole; D016277:Ventricular Function, Left
vernacular_title: Avaliação da função ventricular esquerda em doentes portadores de Pacemakers VVI e DDD, por métodos não invasivos (tempos sistólicos).