Abdel Aal Ahmed Kamel, Soni Jayesh, Saddekni Souheil, Hamed Maysoon F, Dubay Derek A
Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, USA.
Vasc Endovascular Surg. 2012 Jan;46(1):70-4. doi: 10.1177/1538574411422278. Epub 2011 Dec 8.
We describe a technique that allows repositioning of malfunctioning peritoneovenous shunt (PVS) catheters. We report a 67-year-old female with refractory ascites, who presented with malfunctioning PVS. The catheter tip was outside the superior vena cava (SVC), possibly in a small mediastinal vein, which makes its tip inaccessible to regular snares and retrieval devices. We used "in situ" loop snare technique to reposition the tip of the catheter into the inferior vena cava (IVC). In situ loop snare technique can be used to reposition malfunctioning PVS catheters caused by a kink or by malposition of its tip. The technique avoids surgical or interventional replacement of these catheters. This technique can be also used for retrieval of foreign body fragments that have no free ends and, therefore, cannot be captured by a snare or other retrieval devices.
我们描述了一种可重新定位出现故障的腹腔静脉分流（PVS）导管的技术。我们报告了一名67岁患有顽固性腹水且PVS出现故障的女性患者。导管尖端位于上腔静脉（SVC）之外，可能在一条小的纵隔静脉内，这使得常规圈套器和取出装置无法触及导管尖端。我们使用“原位”环形圈套器技术将导管尖端重新定位到下腔静脉（IVC）。原位环形圈套器技术可用于重新定位因扭结或尖端位置不当而出现故障的PVS导管。该技术避免了对这些导管进行手术或介入性更换。此技术还可用于取出没有自由端、因此无法被圈套器或其他取出装置捕获的异物碎片。
