Riegler R, Pernetzky A
Reg Anaesth. 1983 Jan;6(1):19-21.
An epidural catheter inserted at the height of L2/3 could not be removed after spontaneous delivery of a healthy boy, manual extraction of the placenta and fixing the episiotomy. X-rays (lumbar spine a-p and lateral) were taken in order to visualize the epidural catheter's site. The catheter could only be recognized on the a-p but not on the lateral film. It was possible to recognize a foreign body in the ultrasonic study. The exact site of the catheter could not be determined. Continuous pulling in various positions (bend over, stretch and lateral position) could not remove the catheter. A consultant neurosurgeon tried also in vain to remove the fixed catheter. In a final trial pulling hard the catheter broke. The indication for operative extraction was given. Finally the catheter fixed in the ligamentum flavum building a loop and a tight knot in the epidural space could be freed up and removed surgically.
在顺利分娩出一名健康男婴、手动取出胎盘并缝合会阴切开术后，L2/3 水平处插入的硬膜外导管无法拔除。拍摄了 X 光片（腰椎前后位和侧位）以确定硬膜外导管的位置。导管仅在前后位片上可见，侧位片上未见。超声检查可识别出异物，但无法确定导管的确切位置。在不同体位（弯腰、伸展和侧卧位）持续牵拉均无法拔除导管。一名神经外科会诊医生尝试拔除固定的导管，同样未成功。最后一次用力牵拉时，导管断裂。于是决定进行手术取出。最终，在硬膜外间隙固定于黄韧带并形成环和紧密结的导管得以松解并通过手术取出。
