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Renal artery stent placement: long-term results with the Wallstent endoprosthesis
L M Hennequin1, F G Joffre, H P Rousseau
1Department of Radiology, Centre Hospitalier Universitaire Nancy-Hôpital Central, France.
Purpose:
To evaluate clinical success and long-term patency of a Wallstent in the renal artery.
Materials And Methods:
Twenty-five Wallstents were placed in 21 patients to treat delayed restenosis after previous balloon angioplasty (n = 13) or inadequate immediate postangioplasty response (n = 8). Indications for angioplasty were hypertension in all patients and renal preservation in seven. Stenosis was atheromatous in 15 patients, involving ostium in seven.
Results:
Stent placement was successful in all patients. At follow-up angiography (range, 12-60 months), four patients (20%) had stent restenosis. Of these, three had undergone treatment for restenosis after angioplasty and three had ostial lesions. Cumulative primary patency rate was 95%, 85%, and 77% at 7, 9, and 15 months, respectively. Hypertension was cured in three patients and improved in 18.
Conclusion:
Arterial stent placement has good clinical results and high long-term patency rates after conventional renal angiography or delayed restenosis, especially in ostial lesions.