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Surgical treatment of complete atrioventricular septal defect with the two-patch technique: early-to-mid follow-up

Cardiac Surgery Department, Pro-Cardíaco Hospital, General Polidoro Street 192, Botafogo, Rio de Janeiro, RJ, 22280-000 Brazil

*Corresponding author. Av. Sernambetiba 4.600 Block 5 Apt: 903, Rio de Janeiro, RJ, 22630-011 Brazil. Tel./fax: +55 21 2535 6066.

E-mail address: amonteiro{at}cardiosuporte.com.br (A.J.O. Monteiro).

We report our results on surgical treatment of complete atrioventricular septal defects using the two-patch technique. Forty patients with complete atrioventricular septal defects were operated on in the period from November 1995 to January 2004 and retrospectively analyzed. The age at the time of surgery ranged from 4 months to 20 years (average=18.8±37 months). Their weights ranged from 3 to 39 kg (average=7.6±5.8 kg). Associated tetralogy of Fallot was present in 20% of the cases (8 patients). Monitoring was complete until January 2007, corresponding to a follow-up ranging from 36 to 135 months (average=74±33.7 months). The surgical mortality rate was 2.5% and the hospital mortality rate was 5%. A third patient died from a brain abscess two years after surgery. Over the long-term, two patients needed further operations: one was submitted to mitral plasty due to severe residual mitral insufficiency, one year later; the other underwent a resection of a sub-aortic membrane after three years. Differences were evaluated using the Student-t or Mann–Whitney tests. Surgical treatment of complete atrioventricular septal defect using the two-patch technique results in low morbidity and mortality in early-to-mid term follow-up.

Key Words: Atrioventricular defects; Tetralogy of Fallot; Congenital heart disease