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目的 对比儿童法乐四联症 (TOF)手术前后左室容积和收缩功能变化。方法 对 40例年龄 1～ 12岁的TOF患儿 ,在手术前后分别用超声心动图测量其左室舒张末期和收缩末期内径 ,仪器内Cube公式自动计算出左室舒张末期容积、收缩末期容积、每搏搏出量、射血分数和短轴缩短率。将手术前后测量数据采用统计学配对t检验进行分析。结果 左室容积手术后比手术前明显增大 ,二者差异性显著 (P <0 0 1) ;左室收缩功能手术前后改变不明显 ,二者无明显差异 (P >0 0 5 )。结论 儿童TOF左室容积手术后比手术前明显增大 ,收缩功能无显著改变
Objective To compare the changes of left ventricular volume and systolic function before and after tetralogy of Fallot (TOF) in children. Methods 40 cases of TOF children aged from 1 to 12 years old were measured before and after surgery with left ventricular end-diastolic and end-systolic diameters by echocardiography. The Cube formula was used to calculate the left ventricular end-diastolic volume, end-systolic volume, Stroke stroke volume, ejection fraction and short axis shortening rate. The data before and after surgery were analyzed using the statistical paired t-test. Results The left ventricular volume increased significantly after surgery compared with that before operation (P <0.01). The left ventricular systolic function did not change significantly before and after operation. There was no significant difference between the two groups (P> 0.05). Conclusion Children with TOF left ventricular volume after surgery significantly increased compared with before surgery, no significant change in contractile function