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本研究利用运动超声心动图技术，对２７例法乐氏四联症（ＴＯＦ）一期根治术后远期（０．６～４．４年，平均２．７年）患者左心功能进行评价，同时对未跨环补片者和行单瓣跨环补片者的运动耐力特点进行了比较。结果表明，国人ＴＯＦ患者术后远期适应负荷在不同时期具有不同的特点：首先在心率显著增高的同时，有显著的心肌正性变力反应和容积储备的显著动用；然后患者仅以升高不显著的心率储备应付负荷，心肌正性变力反应和容积储备能力在承受负荷时已不再发挥作用。但其中未跨环补片者较单瓣跨环补片者，具更佳的心率储备、心肌正性变力储备和容积储备，对运动负荷的反应较好。
In this study, left ventricular function was evaluated in 27 patients with long-term (0.6-6.4 years, mean 2.7 years) treatment of 27 patients with tetralogy of Fallot (TOF) undergoing exercise echocardiography. , At the same time, those who did not cross-ring patch and single-lobe cross-ring patch were compared sports endurance characteristics. The results showed that the long-term postoperative adaptation load of Chinese people with TOF had different characteristics at different periods: Firstly, significant positive cardiac response and significant volume reserve were used while heart rate was significantly increased; Insufficient heart rate reserve coping load, positive cardiac response and volume reserve capacity no longer function when loaded. However, those patients who did not cross the ring patch had better heart rate reserve, positive reserve of positive myocardium and reserve of volume than those with single flap cross-ring patch, which showed good response to exercise load.