Renal artery stent placement in renal artery stenosis: technical and early clinical results.
We report the technical and early clinical results of renal artery stent placement in 29 consecutive patients treated at a single centre over a 30-month period, employing the Palmaz balloon-expandable stent. Of 32 arteries treated, 23 (72%) were atheromatous, ostial stenoses. Immediate technical success was achieved in all 29 patients. Follow-up angiography was performed on 25 patients at 6.7 months (mean) and demonstrated a patient restenosis rate of 16%. All surviving patients were followed up for a minimum of 6 months. Blood pressure control was improved in eight (50%) of hypertensive patients, and renal function improved in seven (33%) and stabilized in six (29%) patients with chronic renal impairment (serum creatinine > 150 mumols/l). Complications occurred in seven (24%) of patients, including one procedure-related death. Our experience indicates that stent placement has an initial high technical success rate in renal artery stenosis and that this patency is maintained at repeat angiography with a low restenosis rate. Renal artery stenting is likely to extend the role of percutaneous renal revascularization especially in atheromatous ostial lesions. A randomized trial will be required to evaluate its role compared with balloon angioplasty.
Taylor
A
A
Department of Radiology, West Glasgow Hospitals University NHS Trust, UK.
Sheppard
D
D
Macleod
M J
MJ
Harden
P
P
Baxter
G M
GM
Edwards
R D
RD
Moss
J G
JG
D000328:Adult; D000368:Aged; D000800:Angioplasty, Balloon; D001794:Blood Pressure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007668:Kidney / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012008:Recurrence; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D015607:Stents / Q000009:adverse effects; D015996:Survival Rate; D014654:Vascular Patency