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Follow-up of renal and mesenteric artery revascularization with duplex ultrasonography
D C Taylor1, T M Houston, C Anderson
1Division of Vascular Surgery, University of British Columbia, Vancouver, BC.
Objective:
To evaluate the long-term results of renal revascularization procedures using duplex ultrasonography:
Design:
A case series.
Setting:
A university-affiliated hospital.
Patients:
Twenty-five patients who had undergone renal percutaneous transluminal angioplasty (PTA) (18 arteries), renal bypass (10 arteries) and mesenteric bypass (6 arteries). The mean follow-up was 22 months (range from 3 to 48 months) for those who underwent renal PTA, 23 months (range from 1.5 to 70 months) for those who underwent renal bypass and 34 months (range from 8 to 144 months) for those who underwent mesenteric bypass.
Main Outcome Measures:
Patency rates for the three procedures as assessed by duplex ultrasonography.
Results:
Duplex ultrasonography demonstrated patency without stenosis after renal and mesenteric artery revascularization in 14 arteries subjected to renal PTA, 9 arteries subjected to renal bypass and 6 arteries subjected to mesenteric bypass. Three arteries that had renal PTA had recurrent vessel stenosis and one had occlusion. One artery that had renal bypass showed occlusion.
Conclusions:
Renal PTA, renal bypass and mesenteric bypass are durable procedures at 2 years of follow-up, and duplex ultrasonography is a valuable method for assessing the patency of arteries after renal and mesenteric revascularization.