Retrospective comparison of the amplatz thrombectomy device with modified pulse-spray pharmacomechanical thrombolysis in the treatment of thrombosed hemodialysis access grafts

PURPOSE: To retrospectively evaluate the Amplatz thrombectomy device (ATD) in treatment of thrombosed hemodialysis grafts and compare it with modified pulse-spray pharmacomechanical thrombolysis (PPT). MATERIALS AND METHODS: During a 4-month period, 79 patients presented 126 episodes of graft occlusion. Percutaneous recanalization was performed by using the ATD (n = 57) or the modified PPT technique (n = 69). Evaluation included technical success, complications, and primary patency rates. RESULTS: Technical success was achieved in 93% (53 of 57) of the cases treated with the AID and in 96% (66 of 69) of the cases treated with modified PPT (P =.70). Complications occurred in 6% (four of 69) of modified PPT procedures and 16% (nine of 57) of ATD procedures. This difference was not statistically significant (P = .08); however, there were significantly more local complications in the ATD group (P = .04). The primary patency rates at 30, 90, and 180 days were 65% and 65% 36% and 50%, and 26% and 33% for modified PPT and ATD, respectively. Survival curves were found to differ significantly (P =.49). CONCLUSION: The ATD and modified PPT were similarly successful in the recanalization thrombosed hemodialysis access gram and achieved comparable primary patency rates. The higher rate of local complications and technical difficulties encountered with use of the 8-F ATD limit its usefulness for this indication.