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Abstract #0814

Influence of Outflow Tract Reconstruction on Long-Term Right Ventricular Function and Pulmonary Regurgitation After Repair of Tetralogy of Fallot: A Clinical Magnetic Resonance Imaging Study

C-A Chen1, J-K Wang, M-H Wu, M-Y Su2,3, H-Y Yu4, C-I Chang4, I-S Chiu4, I-S Chen4, W-Y Isaac Tseng5

1Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan; 2Institute of Biomedical Engineering, National Yang-Ming University; 3Department of Medical Imaging, National Taiwan University Hospital; 4Department of Surgery, National Taiwan University Hospital; 5Center for Optoelectronic Biomedicine, College of Medicine, National Taiwan University

The purpose of this study was to evaluate the influence of different types of right ventricular outflow tract (RVOT) reconstruction during repair of tetralogy of Fallot (TOF) on long-term right ventricular function and pulmonary regurgitation (PR) severity using cardiac magnetic resonance (CMR). Our results showed that the use of transannular patch (TAP) during RVOT reconstruction was significantly associated with advanced degree of PR, increased extent of RV dilatation, and higher incidence of RVOT aneurysm or akinesia late after TOF correction. Pericardial monocuspid valve used for TAP failed to demonstrate long-term beneficial effect in the prevention of PR and RV dilatation.