用彩色多普勒血流会聚法对20例动脉导管未闭患者的左向右分流率F进行测定，并根据F值计算出动脉导管的横截面积A。
The left to right shunt rate (f) and the transverse sectional area of ductus arteriosus (a) were calculated by color Doppler flow convergence method in 20 patients with patent ductus arteriosus.
对动脉导管未闭（PDA）患儿在常温全麻下结扎，其余7例均在中低温或深低温体外循环下行心脏大血管畸形解剖矫治。
Results The case of PDA underwent ligation under normothermic anesthesia and the other 7 cases were operated upon under moderate or deep hypothermic cardiopulmonary bypass.
方法总结外科治疗动脉导管未闭117例，其中合并肺动脉高压42例，合并心血管病变34例。
Methods The surgical treatments for 117 patients with PDA were reviewed, of which, 42 cases accompanied with pulmonary hypertension, 34 with intracardiac malformation.
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