Radiologic placement of tunneled hemodialysis catheters in occluded neck, chest, or small thyrocervical collateral veins in central venous occlusion

PURPOSE: To evaluate interventional radiologic placement of tunneled hemodi alysis catheters in small thyrocervical collateral veins or in occluded vei ns in the neck or chest in patients with limited venous access, MATERIALS AND METHODS: A femoral venous approach was used to recanalize occ luded veins or catheterize small collateral veins in 24 patients in whom al l major central veins were occluded. A loop snare or catheter was used as a target for antegrade puncture. Metallic stents were deployed if necessary. Once antegrade access was secured, catheters were placed in a conventional fashion. RESULTS: Technical success was achieved in 22 (88%) of 25 procedures (one p atient underwent two procedures). All catheters functioned immediately afte r placement. There were two procedural complications: a vasovagal episode r equiring intravenously administered atropine sulfate and an episode of resp iratory distress requiring intubation. There were no instances of pneumotho rax, nerve injury, or bleeding complications. Catheter malfunction requirin g exchange occurred at a rate of 0.67 per 100 catheter days. Infection requ iring catheter removal occurred at a rate of 0.06 per 100 catheter days. Pr imary patency was 90% at 1 month, 71% at 6 months, and 25% at 12 months. Se condary patency was 100% at 6 months and 70% at 12 months. CONCLUSION: In patients undergoing hemodialysis in whom conventional venous access sites have been exhausted, interventional radiologic venous recanal ization for the placement of permanent catheters is safe and effective. Cat heters placed in recanalized veins or small collateral veins have shorter p rimary patency rates compared with those of conventionally placed catheters , but the former can be maintained for relatively long periods.