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Stent Placement in Ostial and Nonostial Atherosclerotic Renal Arterial Stenoses: A Prospective Follow-up Study1

Stent Placement in Ostial and Nonostial Atherosclerotic Renal Arterial Stenoses: A Prospective... PURPOSE: To compare the results of balloon percutaneous transluminal renal angioplasty (PTRA) and stent placement in atherosclerotic ostial, proximal, and isolated truncal stenoses. MATERIALS AND METHODS: Between January 1994 and April 1998 the authors prospectively followed up 163 consecutive patients with 200 atherosclerotic renal arterial lesions after primary PTRA or primary stent placement. Duplex ultrasonography was performed 1 day and 3, 6, and 12 months later. RESULTS: The primary 12-month PTRA patency rates were 34% (21 of 33 atherosclerotic lesions) for ostial stenoses, 65% (20 of 60) for proximal stenoses, and 83% (five of 30) for truncal stenoses (χ 2 value, 15.63; P < .001). The corresponding stent patency rates were 80% (four of 21), 72% (nine of 34), and 66% (five of nine), respectively (χ 2 value, 4.11; not significant). Significant stent-related reduction in risk of restenosis was limited to the ostial stenoses ( P = .002). CONCLUSION: Renal arterial stent placement considerably improves patency in ostial stenoses, but compared with the technically successful PTRA, it does not significantly improve primary patency in proximal and isolated truncal renal arterial stenoses. Renal angiography, 961.122 Renal arteries, stenosis or obstruction, 961.721 Renal arteries, transluminal angioplasty, 961.1282, 961.1286 Renal arteries, US, 961.12989 Stents and prostheses, 961.1268, 961.1286 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Radiology Radiological Society of North America, Inc.

Stent Placement in Ostial and Nonostial Atherosclerotic Renal Arterial Stenoses: A Prospective Follow-up Study1

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Publisher
Radiological Society of North America, Inc.
Copyright
Copyright © 2000 by Radiological Society of North America
ISSN
1527-1315
eISSN
0033-8419
Publisher site
See Article on Publisher Site

Abstract

PURPOSE: To compare the results of balloon percutaneous transluminal renal angioplasty (PTRA) and stent placement in atherosclerotic ostial, proximal, and isolated truncal stenoses. MATERIALS AND METHODS: Between January 1994 and April 1998 the authors prospectively followed up 163 consecutive patients with 200 atherosclerotic renal arterial lesions after primary PTRA or primary stent placement. Duplex ultrasonography was performed 1 day and 3, 6, and 12 months later. RESULTS: The primary 12-month PTRA patency rates were 34% (21 of 33 atherosclerotic lesions) for ostial stenoses, 65% (20 of 60) for proximal stenoses, and 83% (five of 30) for truncal stenoses (χ 2 value, 15.63; P < .001). The corresponding stent patency rates were 80% (four of 21), 72% (nine of 34), and 66% (five of nine), respectively (χ 2 value, 4.11; not significant). Significant stent-related reduction in risk of restenosis was limited to the ostial stenoses ( P = .002). CONCLUSION: Renal arterial stent placement considerably improves patency in ostial stenoses, but compared with the technically successful PTRA, it does not significantly improve primary patency in proximal and isolated truncal renal arterial stenoses. Renal angiography, 961.122 Renal arteries, stenosis or obstruction, 961.721 Renal arteries, transluminal angioplasty, 961.1282, 961.1286 Renal arteries, US, 961.12989 Stents and prostheses, 961.1268, 961.1286

Journal

RadiologyRadiological Society of North America, Inc.

Published: Aug 1, 2000

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