A modified loop snare technique for the retrieval of a dislodged central venous catheter

A dislodged central venous port catheter is typically retrieved using an endovascular approach; however, the retrieval procedure poses a challenge for vascular specialists. The desired outcomes can be successfully achieved with the loop snare technique, an endovascular treatment method for the retrieval of a dislodged central venous port catheter. Herein, we present a case wherein the modified loop snare technique was used for successfully retrieving a dislodged central venous port catheter by reversing the tip of the guidewire inside the right ventricle and advancing it back into the snare.

Multi loop snare technique for difficult inferior vena cava filter retrievals

Introduction

Use of optional vena cava filters has steadily increased. In the majority of cases removal is successful using standard techniques. In cases of tilting and migration of the filter however, more advanced techniques are necessary. The "loop-snare" technique has been described for such cases. Difficulties arise when the loop starts to slip around the legs and arms of the filter.

New technique

We present an improved loop-snare technique which allows to retrieve IVC filters when the simple loop-snare technique fails. We used additional loops, in one case one additional loop in another case two additional loops around the filter tip which allowed successful retrieval. The additional loops were created with a reversed shaped catheter. All guidewires were then engaged with a snare and pulled into a large sheath. The additional loops stabilize the tip and the filter can be pulled into the sheath.

Conclusion

The "multiple-loop-snare" technique is a refinement of the previously described "single loop-snare" technique and can be used when one loop fails.