Abstract #1310

Interaction of Aortic Flow and Myocardial Motion in Patients with Repaired Tetralogy of Fallot

Xiao-Qing Zhang¹, Meng-Chu Chang¹, Ming-Ting Wu², Ken-Pen Weng^3,4, and Hsu-Hsia Peng¹

¹Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan, ²Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ³Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ⁴Department of Pediatrics, National Yang-Ming University, Taipei, Taiwan

We aimed to investigate the abnormal aortic flow and its adverse interaction with regional myocardial motion in repaired tetralogy of Fallot (rTOF) patients. The rTOF patients were divided into rTOF1and rTOF2 groups according to their indexed right ventricular end-systolic volume (RVESVi). The rTOF2 group demonstrated increased aortic retrograde fraction and there was a correlation exhibited between retrograde fraction and systolic myocardial motion. In conclusion, the assessments of abnormal artic flow and altered myocardial motion were helpful in elucidating the possibly adverse interaction between the characteristics of the aorta and myocardium in rTOF patients with different degrees of RV dilatation.

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