心包积液时,为明确积液性质或减轻心脏填塞症状,及时心包穿刺是一种必要的诊疗手段。但由于患儿年龄、病因不同,积液多少、分布情况各异,按常规心包穿刺方法选择穿刺部位,有一定盲目性。进针深度不易掌握,加上小儿常不能配合,穿刺过程中又唯恐损伤肝脏、肺部等重要脏器,因此心包穿刺较 Pericardial effusion, in order to clarify the nature of effusion or reduce cardiac tamponade symptoms, timely puncture is a necessary treatment. However, due to children’s age, different etiology, effusion how much, the distribution of different, according to the conventional pericardial puncture site selection, there is a certain blindness. Depth of the needle is not easy to grasp, coupled with the children often can not cooperate with the fear of damage in the process of puncture the liver, lung and other important organs, so pericardial puncture