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      Recanalization of acute and subacute venous and synthetic bypass-graft occlusions with a mechanical rotational catheter.

      Cardiovascular and Interventional Radiology

      methods, adverse effects, Vascular Surgical Procedures, physiology, Vascular Patency, Treatment Outcome, instrumentation, Thrombectomy, Severity of Illness Index, Risk Assessment, Retrospective Studies, Regional Blood Flow, Radiography, Interventional, surgery, Popliteal Artery, radiography, Peripheral Arterial Disease, Patient Safety, Middle Aged, Male, Humans, therapy, Graft Occlusion, Vascular, Follow-Up Studies, Femoral Artery, Female, Endovascular Procedures, Cohort Studies, Catheters, Catheterization, Peripheral, Arterial Occlusive Diseases, Ankle Brachial Index, Angiography, Digital Subtraction, Aged, 80 and over, Aged

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          Percutaneous mechanical thrombectomy (PMT) is now established as an alternative treatment of acute arterial occlusions in addition to fibrinolysis and surgical thrombectomy. The objective of this retrospective study was the investigation of a rotational atherothrombectomy catheter in terms of safety and efficacy in the treatment of acute and subacute femoropopliteal bypass occlusions. Forty-two patients (average age 65.8 ± 9.1 years) with acute (<14 days [n = 31]) and subacute (14-42 days [n = 11]) femoropopliteal bypass occlusions were treated consecutively with a rotational debulking and removal catheter (Straub Rotarex). The average occlusion length was 28.4 ± 2.9 (24-34) cm. Thirty-four (81%) patients underwent venous bypass, and 8 (19%) patients underwent polytetrafluoroethylene bypass. The technical success rate was 97.6% (41 of 42). In 1 patient, blood flow could not be restored despite the use of the atherothrombectomy system. The average catheter intervention time was 6.9 ± 2.1 (4-9) min. Ankle-brachial index increased from 0.39 ± 0.13 to 0.83 ± 0.11 at discharge and to 0.82 ± 0.17 after 1 month (p < 0.05). There were a total of 2 (4.8%) peri-interventional complications: One patient developed a distal embolism, which was successfully treated with local lysis, and another patient had a small perforation at the distal anastomosis, which was successfully treated with a stent. PMT with the Rotarex atherothrombectomy catheter represents a safe and effective option in the treatment of acute and subacute femoropopliteal bypass occlusions because it can quickly restore blood flow.

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