三维超声心动图对法洛四联症患者术后右心室功能的评估

目的:探讨实时三维超声心动图（RT-3DE）在评价法洛四联症（TOF）患者手术后右心室功能中的意义。 方法:应用RT-3DE对23例TOF患者术前、术后6个月右心室收缩末期容积（RVESV）、右心室舒张末期容积（RVEDV）及右心室射血分数（RVEF）进行检测。并将TOF患者术后6个月的RVEF与心电图QRS间期进行相关分析。 结果:与术前比较，TOF患者术后6个月RT-3DE所测RVEDV、RVESV无显著增加（P>0.05）；RVEF明显减低（P<0.05）。TOF患者术后6个月RT-3DE超声所测RVEF与QRS间期呈负相关（r=-0.697, P<0.05）。 结论:RT-3DE能准确评价TOF患者术后右心室功能，可以早期发现术后右心室功能不全，对TOF患者预后评估有重要意义。

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

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.