Surgical management of complete atrioventricular canal associated with tetralogy of Fallot
Abstract Between 1984 and 1993, 12 children with an atrioventricular canal and tetralogy of Fallot underwent surgical repair. The mean(s.d.) age at operation was 58(18) months, and the mean (s.d.) body weight 15 (4) kg. Nine patients underwent 11 palliative procedures. The ventricular septal defect was closed through a combined (right atrial and right ventricular) approach in nine cases, and through a right atrial approach in three, using a prosthetic patch with a wide anterior extension, secured with a running suture. The ‘ostium primum’ defect was closed with a separate prosthetic patch in 11 cases (double-patch technique). Right ventricular outflow obstruction was relieved by a composite infundibular patch (seven cases) or a transanular patch (five). There were four hospital deaths (33%). These were caused by low cardiac output in three cases and infection in one (three deaths occurred in patients with a transanular patch). One patient has so far died during follow-up. Assessment at 50(36) months by echo-Doppler showed moderate-to-severe ‘mitral’ regurgitation in three cases, and moderate ‘ricuspid’ regurgitation with right ventricular dysfunction in one case. Two patients have required further surgery.
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