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Background: In repair of tetralogy of Fallot (TOF), the use of monocusp to protect the right ventricle from volume overload is debatable. Aim of work: Evaluates early outcome of pericardial monocusp in pulmonary position in transannular patch repair (TAP). Patients and Methods: 60 patients underwent TOF repair with TAP from June 2016 to December 2018 in Al-Azhar University Hospital and National Heart Institute, group I thirty patients without pericardial monocusp and group II thirty patients received it in pulmonary position. Results: We had Thirty-four male patients representing (56.66%). The mean age of our patients was 14.983±6.533 months. The mean aortic cross clamp time was statistically shorter in group I (P<0.001) without statistical significance in the mean Cardiopulmonary bypass time. Intensive care units stay was significantly shorter in group II than group I. The mean hospital stay in group I was 10.862±2.248 days which was longer than group II. In post-operative echo, the mean grade of PR in group I was 3.409± 0.734 and in group II was 1.654±0.629 and the mean TR in group I was 1.955±0.785 and in group II was 1.346±0.485. In follow up echo, the mean grade of PR was 3.448±0.686 while in group II was 2.241±0.830 and the mean grade of TR in group I was 1.690±0.712 while in group II was 1.345±0.814. Conclusion: A pericardial monocusp in pulmonary position is safe, effective and helps to protect the right ventricle from early hemodynamic consequences when transannular patch repair of TOF is done.

Early outcome of transannular patch repair of tetralogy of Fallot with or without pericardial monocusp in pulmonary position