title: [Divided left atrium: operative results and follow-up in the cor triatriatum].
abstract: OBJECTIVE
  A divided left atrium because of cor triatriatum is a relatively rare cardiac anomaly requiring corrective surgery. We describe here our clinical and surgical experience with this congenital heart defect as well as the different medium and long term diagnostic, surgical and evolution aspects.
  
  
  METHODS
  From 1981 to 1999, 15 children with cor triatriatum without complex associated cardiovascular defects underwent surgery at a mean age of 13 months (excision of the obstructive membrane). The surgical reports were reviewed and the clinical and echocardiographic data were analyzed before and after the intervention; six of these patients (40%) were referred to operating room only with the 2-D echo Doppler technique and color flow mapping information. The follow-up period ranged from 8 months to 19.3 years.
  
  
  RESULTS
  Diagnosis was confirmed during the surgical procedure. One 9 month old patient died 60 days after a successful corrective surgery because of sepsis (7%). No late deaths or reoperations were found in the follow-up period. All 14 patients who survived the operation have a functional class I (NYHA), and they are asymptomatic in the follow-up. The overall survival rate was 93% (70% CI: 87-90).
  
  
  CONCLUSIONS
  Corrective surgery with excision of the obstructive membrane dividing the left atrium restores normal anatomic, hemodynamic and clinical status in children with cor triatriatum without complex associated defects.
authors.affiliation: Servicio de Cardiología Pediátrica, Hospital Ramón y Cajal, Madrid.
authors.forename: P
authors.initials: P
authors.lastname: Balselga
authors.forename: M
authors.initials: M
authors.lastname: Cazzaniga
authors.forename: R
authors.initials: R
authors.lastname: Gómez
authors.forename: R
authors.initials: R
authors.lastname: Collado
authors.forename: J
authors.initials: J
authors.lastname: Pérez De León
authors.forename: F
authors.initials: F
authors.lastname: Villagrá
authors.forename: D
authors.initials: D
authors.lastname: Vellibre
authors.forename: M M
authors.initials: MM
authors.lastname: Azcárate
mesh_terms: D005260:Female; D005500:Follow-Up Studies; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D016896:Treatment Outcome