Authors: Schwartz J.R.; Mewissen M.W.; Gosset J.B.; Pipia J.R.; Marty A.M.; Lanza D.J.; Higginbotham S.Y.; Collier W.

Source: Journal for Vascular Ultrasound, Volume 27, Number 2, 1 June 2003 , pp. 81-85(5)

Publisher: Society for Vascular Ultrasound

Abstract:

Purpose.—To evaluate the role of duplex scanning as an imaging tool in surveillance of the natural history of femoropopliteal arterial segments treated with self-expandable nitinol stents.

Methods.—From March 1999 to December 2001, 92 limbs in 84 patients were treated with self-expanding stents in the femoropopliteal (FP) segment for the relief of chronic limb ischemia. Follow-up studies included color duplex ultrasonography (CDU) and ankle/brachial indices (ABIs) in 57 limbs. Duplex criteria used to determine the presence of a significant in-stent stenosis was an increase in the peak systolic velocity within the stent of >100% from the proximal segment. The presence of a hemodynamically significant stenosis was then correlated with the concurrent ABI.

Results.—Eleven in-stent stenoses were documented in 11 limbs. In those patients, the mean decrease in ABI was 0.29, ranging from 0.13 to 0.50. In 46 patients with a <50% stenosis identified on CDU, the mean change in ABI was by comparison not significant.

Conclusions.—From these data, the degree of in-stent stenosis (>50%) by duplex ultrasonographic criteria correlates well with a significant stenosis within a stented segment of the femoropopliteal artery. It seems that CDU is an ideal noninvasive imaging tool to objectively surveillance stent patency.

Document Type: Research article

Publication date: 2003-06-01

More about this publication?

• The Journal for Vascular Ultrasound (JVU) is the official journal of the Society for Vascular Ultrasound. It consists of original scientific and educational articles, case studies, book reviews, technical reviews, ultrasound principle reviews, viewpoints, letters to the editor, and CME tests. Regular reading of JVU, published quarterly, will keep you current in your field and provide essential information that can be applied in your practice.
  
  Previously known as the Journal of Vascular Technology - View Volumes 16-26 here
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• In this Subject: Radiology & Imaging ,  Acoustics
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