The technical exploration and efficacy observation of interventional treatment for occlusion of aorto-iliac-femoral artery

Objective: To explore the technical main points of interventional treatment for occlusion of aorto-iliac-femoral artery. Methods: Thirty-four patients with occlusion of aorto-iliac-femoral artery were observed after interventional treatment. There were 8 cases with the complete occlusion of inferior segment of abdominal aorta and bilateral iliac artery, including 3 cases with stenosis of renal artery. There were 23 cases with occlusion of single iliac artery, including 4 cases with occlusion of common femoral artery. There were 3 cases with occlusion of single superficial femoral artery only. They were all treated by combined interventional techniques, such as recanalization, local thrombolysis via catheter, percutaneous transluminal angioplasty ( PTA) , and implantation of stent. Results: 8 abdominal aortas, 36 iliac arteries, 4 common femoral arteries and 3 superficial femoral arteries were all recanalized except 3 iliac arteries. The rate of patency was 94%. 46 naked stents and 3 coated stents were placed totally, including 6 abdominal aortas stents, 34 iliac artery stents, 2 common femoral artery stents, 4 superficial femoral artery stents, and 3 renal artery stents. In 31 successfully treated cases, there were 9 cases with relief of symptoms and signs and 21 cases with obvious improvement but 1 case died of long-term chronic renal failure at the 2nd day after treatment. And complications were observed in 4 cases. All the patients were followed-up for 2-53 months (mean 21.5 months). Among them, 2 cases were treated again by interventional methods respectively at the 2nd month and the 14th month for reocclusion of inner stents, and symptoms in other cases showed no deterioration. Conclusion:Comprehensive application of multiple-interventional techniques can be a safe and effective method in treating the occlusion of aorto-iliac-femoral artery and obtaining satisfactory clinical efficacy. (authors)