Elsharkawy Hesham, Saasouh Wael, Patel Bimal, Babazade Rovnat
From the Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio.
A A Pract. 2018 Apr 1;10(7):176-178. doi: 10.1213/XAA.0000000000000654.
Currently, no gold standard method exists for localization of an epidural catheter after placement. The technique described in this report uses pulsed-wave Doppler (PWD) ultrasound to identify intrathecal location of an epidural catheter. A thoracic epidural catheter was inserted after multiple trials with inconclusive aspiration and test dose. Ultrasound PWD confirmed no flow in the epidural space and positive flow in the intrathecal space. A fluid aspirate was positive for glucose, reconfirming intrathecal placement. PWD is a potential tool that can be used to locate the tip of an epidural catheter.
目前，硬膜外导管置入后尚无金标准定位方法。本报告中描述的技术使用脉冲波多普勒（PWD）超声来确定硬膜外导管的鞘内位置。在多次抽吸和试验剂量结果不明确的情况下插入了一根胸段硬膜外导管。超声PWD证实硬膜外间隙无血流，鞘内间隙有正向血流。液体抽吸物葡萄糖检测呈阳性，再次证实为鞘内置入。PWD是一种可用于定位硬膜外导管尖端的潜在工具。
