Percutaneous renal artery stent placement for hypertension and azotemia: pilot study.
To evaluate the efficacy of balloon-expandable (Palmaz) stents in the treatment of atheromatous renal artery stenosis, prospective placement of stents in 24 arteries in 20 patients was performed over an 18-month period. Indications were hypertension in 18 patients and renal insufficiency (serum creatinine > 1.5 mg/dL) in 11, and all lesions failed conventional transluminal angioplasty. Technical success was achieved in 96% of cases. Hypertension benefit was noted in 77% of patients followed for 6 months (n = 13) and 67% of patients at 1 year (n = 8). Improvement in serum creatinine was seen in 71% (n = 7) and 100% (n = 3) of azotemic patients evaluated at 6 and 12 months, respectively. Six-month angiographic patency was identified in 13 of 16 treated sites. Renal artery stent placement resulted in one asymptomatic segmental branch occlusion; there were no other procedural complications. In conclusion, renal artery stent placement is a technically and clinically effective treatment for hypertension and azotemia due to renal artery stenosis.
Rundback
J H
JH
Department of Radiology, Muhlenberg Hospital Center, Bethlehem, PA, USA.
Jacobs
J M
JM
D000368:Aged; D000369:Aged, 80 and over; D000800:Angioplasty, Balloon / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D001161:Arteriosclerosis / Q000150:complications / Q000000981:diagnostic imaging / Q000628:therapy; D005260:Female; D006801:Humans; D006978:Hypertension, Renovascular / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D011446:Prospective Studies; D011859:Radiography; D012008:Recurrence; D012077:Renal Artery / Q000000981:diagnostic imaging; D015607:Stents / Q000009:adverse effects / Q000706:statistics & numerical data; D016896:Treatment Outcome; D014511:Uremia / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*