Abstract

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Title:: Evaluation of right ventricular function in patients after tetralogy of Fallot repair using three-dimensional echocardiography

Author(s):: ZOU Junlin; SUN Zelin; ZHANG Saidan; LONG Tianyi; ZHOU Zhengming; JING Ran; Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha 410008, China

Keywords:: ; Keywords: real-time three-dimensional echocardiography; tetralogy of Fallot; right ventricle; ventricular function

Abstract:: Abstract: Objective To explore the value of real-time three-dimensional echocardiography (RT-3DE) in the evaluation of right ventricular function in patients after repair of tetralogy of Fallot (TOF). Methods The right ventricular end systolic volume (RVESV), right ventricular end diastolic volume (RVEDV) and right ventricular ejection fraction (RVEF) in 23 TOF patients before and 6 months after TOF repair were detected by RT-3DE. The correlation analysis was performed between RVEF and QRS interval of electrocardiogram which were obtained 6 months after the TOF repair. Results No significant increases were found in RVEDV and RVESV between preoperation and 6 months postoperation (P>0.05), while RVEF detected 6 months after TOF repair was significantly decreased (P<0.05). Six months postoperatively, RVEF detect by RT-3DE was found to be negatively correlated with QRS interval (r=-0.697, P<0.05). Conclusion RT-3DE can accurately evaluate the right ventricular function in patients after TOF repair and achieve the early detection of postoperative right ventricular dysfunction, which is of great significance for the evaluation of the prognosis of TOF patients.