title: Repair of complex left ventricular outflow tract obstruction in children.
abstract: BACKGROUND
  Complex obstruction of the left ventricular outflow tract (LVOTO) in children may be treated with surgical procedures like the Ross-Konno or Koncz-Konno procedures, or modifications thereof. We present our results from the last 10 years.
  
  
  METHODS
  During the period from December 1991 to April 2002, 17 patients/children with complex LVOTO were operated on. Patients treated with balloon valvuloplasty, open commisurotomy or simple valve replacement are excluded. The procedures performed were: Koncz-Konno (KK) or modified KK (n = 10), Ross-Konno (RK) (n = 2) and Ross (RO) (n = 5). Concomitant procedures included mitral valve replacement (n = 1), aortic arc plasty (n = 1), subvalvular myotomi (n = 1), resection of subvalvular membrane (n = 1) and aorto-coronary bypass (n = 1). Patients' ages ranged from 1 to 178 months, median 71 months. Body weights ranged from 3.8 to 50.0 kg, median 19.4 kg. Eight cases were redo procedures.
  
  
  RESULTS
  Three early deaths occurred. One patient in the KK group, one in the modified KK group and one in the RK group. One patient died 8 years postoperatively of unknown reasons; no autopsy was performed. The rest of our patients who survived the initial major surgical treatment show normal physical performance and their quality of life seems to be good.
  
  
  CONCLUSIONS
  Patients with complex LVOTO can be operated with biventricular repair in selected cases. Early and late mortality are acceptable.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Rikshospitalet, University of Oslo, Oslo, Norway. rune.eggum@rikshospitalet.no
authors.forename: Rune
authors.initials: R
authors.lastname: Eggum
authors.forename: Kjell
authors.initials: K
authors.lastname: Saatvedt
authors.forename: Egil
authors.initials: E
authors.lastname: Seem
authors.forename: Harald L
authors.initials: HL
authors.lastname: Lindberg
mesh_terms: D000293:Adolescent; D001021:Aortic Valve / Q000002:abnormalities / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000401:mortality*; D012189:Retrospective Studies; D018570:Risk Assessment; D015996:Survival Rate; D016896:Treatment Outcome; D014694:Ventricular Outflow Obstruction / Q000175:diagnosis* / Q000601:surgery*