Introduction. Multiple studies presented early results of AV canal repair with relatively low risk of redo surgery. However little mid or long-term data have been published. In this study we present, the midterm results of 261 consecutive patients who had repair of AV canal between January 1999 to December 2008 in our institutions.
Methods and results: Retrospective review of 261 cases with mean age of 36 + 2.47 months, male to female ratio 1:2; and complete AV canal with associated other cardiac anomalies in 39.8%. 25% had banding at a mean age of 2.3 months in preparation for stage two repairs that followed in an average of 1.8 years (0.6-4.3 years range). The double patch technique with standard hypothermic cardiopulmonary bypass and cold blood cardioplegia were performed. The mean hospital stay was 17.52 + 1.44 days (3 – 180 days range). The mean follow up time was 39 + 2.37 months that ( 1 – 113 months range). The in hospital mortality was 5% with acturial survival using Kaplan Mayer of 95% + 00. The proportional hazards were investigated by cox-regression for gender, age, anomalies and AVC defect. The complete AV canal was the only significant (P value 0.011, Exp(B) 0.016 with 95% CI 0.001,0.391). Postoperatively, 84.3% of patients had zero to mild Mitral valve regurgitation, 13.4 % had mild to moderate and 2.4% moderate to severe. Redo surgeries were done for 4.7% of the patients.
Conclusion. Double patch technique can offer satisfactory midterm results of AV canal repair.