title: Results for surgical correction of complete atrioventricular septal defect: associations with age, surgical era, and technique.
abstract: BACKGROUND
  This study was conducted to evaluate the outcomes of patients undergoing complete atrioventricular septal defect (CAVSD) repair with particular attention to age at surgery, surgical era, and technique.
  
  
  METHODS
  One hundred and forty-seven patients undergoing CAVSD repair between November 2002 and February 2012 were grouped according to surgical era and technique. Group I (age: 9.4 ± 5.0 months; weight: 6.8 ± 1.7 kg) consisted of 45 patients, operated before August 2006, and was divided into subgroup Ia (31 patients; two-patch repair) and subgroup Ib (14 patients; modified single-patch repair). One hundred and two patients operated after August 2006 were included in Group II (age: 5.2 ± 3.1 months; weight: 4.9 ± 2.6 kg), and was divided into subgroup IIa (59 patients; two-patch repair) and subgroup IIb (43 patients; modified single-patch repair). Groups were compared with regard to perioperative variables and postoperative data.
  
  
  RESULTS
  There were 19 early and five late deaths. Overall mortality was significantly higher in Group I, compared to Group II (p < 0.01). Comparison of Groups Ia to Ib and IIa to IIb revealed no statistically significant difference in mortality or morbidity. Age >8 months and preoperative common atrioventricular valve (CAVV) regurgitation ≥ moderate were significant risk factors for mortality and morbidity. After 40.8 ± 24.4 months, 99 (80.4%) of 123 (83.7%) survivors were asymptomatic without any medication, and 24 (19.5%) have mild symptoms.
  
  
  CONCLUSIONS
  Our current results indicate that younger patient age and better preoperative CAVV functions were the main factors for a favorable outcome after surgical correction of CAVSD; and outcomes did not differ by the surgical technique.
authors.affiliation: Department of Pediatric Cardiac Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey. dr.bugra@gmail.com
authors.forename: Bugra
authors.initials: B
authors.lastname: Harmandar
authors.forename: Numan Ali
authors.initials: NA
authors.lastname: Aydemir
authors.forename: Ali Riza
authors.initials: AR
authors.lastname: Karaci
authors.forename: Ahmet
authors.initials: A
authors.lastname: Sasmazel
authors.forename: Turkay
authors.initials: T
authors.lastname: Saritas
authors.forename: Mehmet Salih
authors.initials: MS
authors.lastname: Bilal
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Yekeler
mesh_terms: D000367:Age Factors; D001835:Body Weight; D006348:Cardiac Surgical Procedures / Q000379:methods*; D005260:Female; D006343:Heart Septal Defects / Q000601:surgery*; D006349:Heart Valve Diseases / Q000503:physiopathology; D006351:Heart Valves / Q000503:physiopathology; D006801:Humans; D007223:Infant; D008297:Male; D057234:Preoperative Period; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome