应用超声技术测定184例小儿法乐氏四联症(TOF)手术前后左室功能,包括:1、左室收缩力指标:射血分数(EF)及短轴缩短率(SF),2、左室容量指标:舒张末容积指数(EDVI),3、左室排血量指标:每搏指数(SI)及心脏指数(CI)。结果显示EF及SF术前后均在正常范围,EDVI、SI及CI术前明显降低,术后两周显著增加,平均3个月达正常水平,2年内无异常改变。SI及CI与EDVI呈直线正相关。从而提出,只要手术条件成熟,TOF小儿应尽早施行根治术,及时改善左室容量,提高左室排血量。 The left ventricular function was measured in 184 children with tetralogy of Fallot (TOF) before and after surgery, including: 1, left ventricular systolic index: ejection fraction (EF) and short axis shortening (SF), 2 Room volume index: end-diastolic volume index (EDVI), 3, left ventricular mass index: stroke index (SI) and cardiac index (CI). The results showed that EF and SF were in the normal range before surgery, EDVI, SI and CI preoperative significantly decreased, increased significantly after two weeks, an average of 3 months to normal levels, no abnormal changes within 2 years. SI and CI were positively correlated with EDVI. Therefore, as long as the surgical conditions are ripe, TOF children should be implemented as soon as possible radical surgery, timely improvement of left ventricular capacity, increased left ventricular ejection.