splenoportal venous anastomosis

例句：

1. 1. This surgery is often used to treat congenital heart defects in infants.
   这种手术通常用于治疗婴儿先天性心脏病缺陷。
2. 2. The patient was scheduled for a splenoportal venous anastomosis procedure.
   患者被安排进行脾门静脉吻合术。
3. 3. The success of the operation depended on the precise anatomical positioning of the vessels involved.
   手术的成功取决于涉及的血管的精确解剖定位。