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Stent placement in ostial and nonostial atherosclerotic renal arterial stenoses: A prospective follow-up study
被引:76
作者:
Baumgartner, I
von Aesch, K
Do, DD
Triller, J
Birrer, M
Mahler, F
机构:
[1] Univ Hosp Bern, Div Angiol, CH-3010 Bern, Switzerland
[2] Univ Hosp Bern, Dept Radiol, CH-3010 Bern, Switzerland
来源:
关键词:
renal angiography;
renal arteries;
stenosis or obstruction;
transluminal angioplasty;
US;
stents and prostheses;
D O I:
10.1148/radiology.216.2.r00au06498
中图分类号:
R8 [特种医学];
R445 [影像诊断学];
学科分类号:
1002 ;
100207 ;
1009 ;
摘要:
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 (chi(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 (chi(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.
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页码:498 / 505
页数:8
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