负压吸引羊膜腔穿刺法１４４６例体会４５３００２河南新乡市第二人民医院阎观中羊膜腔穿刺是引产中常用的简单术式。长期临床实践中发现该术式有某些不足，如有时穿刺针进入羊膜腔的落空感不明显，穿刺针继续前进或改换方向，有时一次不成功，还要第二次进针，造成不必要... Negative pressure to attract amniocentesis 1446 cases of 453002 Second People’s Hospital of Xinxiang City, Henan Yan view of amniocentesis is a simple technique commonly used in induction of labor. Long-term clinical practice found that the operation has some shortcomings, such as sometimes puncture needle into the amniotic cavity sense of frustration is not obvious, the needle continued to move forward or change direction, and sometimes unsuccessful, but also the second needle, resulting in unnecessary ...