Abstract #2887

Interaction of Pulmonary Regurgitation Flow and Myocardial Motion Velocity in Patients with Repaired Tetralogy of Fallot

Chin-Wei Liu¹, Ming-Ting Wu², Mao-Yuan Su³, and Hsu-Hsia Peng¹

¹Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan, ²Department of Radiology Kaohsiung, Kaohsiung Veterans General Hospital, ³Department of Medical Imaging Taipei, National Taiwan University Hospital

In this study, we measured pulmonary regurgitation fraction and three-directional myocardial wall motion velocities to establish indices for characterizing cardiac function in patients with repaired tetralogy of Fallot (rTOF). We aim to reveal the interaction of pulmonary regurgitation fraction and myocardial motion velocity and thereby to speculate the myocardial damage in rTOF patients. In conclusion, the pulmonary RF displayed negative correlation with Vz and positive correlation with Vr in the right ventricle of rTOF patients. The analyses of pulmonary flow and myocardial motion velocity can help to comprehend the interaction between pulmonary regurgitation flow and impaired myocardium in rTOF patients.

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