[Renal stent implantation. The current indications, 2-year results and the possibilities for percutaneous stent recovery].
Use of the Strecker flexible balloon-expandable tantalum stent for treatment of renal artery stenosis after failed angioplasty or transaortic thrombendarterectomy was evaluated in 18 patients (17 hypertensive, 1 normotensive). Right (n = 10) and left (n = 6) renal arteries were involved; in 2 patients renal artery stenosis had developed after kidney transplantation. Indications for stent placement were inadequate immediate postangioplasty response (n = 16), and obstructing intimal flaps following transaortic endarterectomy (n = 2). Stent placement was technically successful (less than 20% residual stenosis) and patency was preserved in 14 patients. Mid-term results (mean, 12-13 months) of 11 patients showed restenoses (greater than 50%) in 2 patients, and improvement of hypertension in 8 patients. The Strecker stent may be helpful in treating residual stenosis after failed revascularization procedures of the renal arteries, although long-term efficacy of stent placement will not be known until trials with more subjects and longer follow-up periods are completed.
Kuhn
F P
FP
Institut für Diagnostische Radiologie, Heinrich-Heine-Universität, Düsseldorf.
Malms
J
J
Kutkuhn
B
B
Fürst
G
G
Torsello
G
G
Mödder
U
U
D000328:Adult; D000368:Aged; D000800:Angioplasty, Balloon; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006978:Hypertension, Renovascular / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000628:therapy; D008297:Male; D008875:Middle Aged; D015641:Radiography, Interventional; D012008:Recurrence; D012077:Renal Artery / Q000000981:diagnostic imaging; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000628:therapy; D015607:Stents / Q000706:statistics & numerical data; D013997:Time Factors