Renal artery duplex ultrasound criteria for the detection of significant in‐stent restenosis

摘要: Objectives To define velocity criteria by ultrasonography for the detection of hemodynamically significant (>60%) renal artery in-stent restenosis (ISR). Background The rate after stenting ranges between 10% and 20%. While duplex ultrasound have been validated native stenosis, there are no uniformly accepted stented arteries. Methods Vascular laboratory databases from two academic medical centers were retrospectively reviewed patients who underwent followed evaluation angiography (CT or catheter angiography) as gold standard. Results A cohort 132 arteries that had angiographic comparisons was analyzed. Eighty-eight demonstrated 0–59% stenosis while 44 revealed 60–99% angiography. Both mean peak systolic (PSV) artery-to-aortic ratio (RAR) significantly higher in with compared those (PSV: 382 cm/sec ± 128 vs. 129 cm/sec ± 62, P<0.001; RAR: 5.3 ± 2.4 2.1 ± 1.0, P <0.001). The optimal PSV RAR cutoffs detecting ISR calculated receiver operator characteristics curve analysis. associated these results will be discussed. Conclusion Duplex is an accurate technique to identify arteries. than native, unstented A normal virtually excludes restenosis. © 2013 Wiley Periodicals, Inc.