title: Surgical treatment of partial atrioventricular septal defect: functional analysis of the mitral valve in the postoperative period.
abstract: OBJECTIVE
  To study mitral valve function in the postoperative period after correction of the partial form of atrioventricular septal defect.
  
  
  METHODS
  Fifty patients underwent surgical correction of the partial form of atrioventricular septal defect. Their mean age was 11.8 years and 62% of the patients were males. Preoperative echocardiography showed moderate and severe mitral insufficiency in 44% of the patients. The mitral valve cleft was sutured in 45 (90%) patients (group II - GII). Echocardiographies were performed in the early postoperative period, and 6 and 12 months after hospital discharge.
  
  
  RESULTS
  The patients who had some type of arrhythmia in the postoperative period had ostium primum atrial septal defect of a larger size (2.74 x 2.08 cm). All 5 patients in group I (GI), who did not undergo closure of the cleft, had a competent mitral valve or mild mitral insufficiency in the preoperative period. One of these patients began to have moderate mitral insufficiency in the postoperative period. On the other hand, in GII, 88.8% and 82.2% of the patients had competent mitral valve or mild mitral insufficiency in the early and late postoperative periods, respectively.
  
  
  CONCLUSIONS
  The mitral valve cleft was repaired in 90% of cases. Echocardiography revealed competent mitral valve or mild mitral insufficiency in 88.8% and 82.2% of GII patients in the early and late postoperative periods, respectively.
authors.affiliation: Instituto Dante Pazzanese de Cardiologia e Hosptal do Coração - Associação do Sanatório Sírio, São Paulo, SP, Brazil. jvcn@uol.com.br
authors.forename: Josué Viana
authors.initials: JV
authors.lastname: Castro Neto
authors.forename: Paulo
authors.initials: P
authors.lastname: Chaccur
authors.forename: Cláudio Leo
authors.initials: CL
authors.lastname: Gelape
authors.forename: Eliseu
authors.initials: E
authors.lastname: de Sousa Santos
authors.forename: Hélio Carlos
authors.initials: HC
authors.lastname: Falcão
authors.forename: Mário
authors.initials: M
authors.lastname: Issa
authors.forename: Antoninho Sanfins
authors.initials: AS
authors.lastname: Arnoni
authors.forename: Flávio Sanches
authors.initials: FS
authors.lastname: Almeida
authors.forename: Camilo
authors.initials: C
authors.lastname: Abdulmassih Neto
authors.forename: Jarbas Jackson
authors.initials: JJ
authors.lastname: Dinkhuysen
authors.forename: Luís Carlos Bento
authors.initials: LC
authors.lastname: Souza
authors.forename: Paulo Paredes
authors.initials: PP
authors.lastname: Paulista
mesh_terms: D000293:Adolescent; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006339:Heart Rate; D006344:Heart Septal Defects, Atrial / Q000601:surgery*; D006345:Heart Septal Defects, Ventricular / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000503:physiopathology* / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D011183:Postoperative Complications / Q000503:physiopathology; D011184:Postoperative Period; D012189:Retrospective Studies