[Usefulness of a percutaneous endoprosthesis in the treatment of renal artery stenoses].
In approximately 10 p. 100 of the cases stenosis of the renal artery cannot be satisfactorily dilated by percutaneous transluminal angioplasty (PTA), and about 10 p. 100 of the patients successfully dilated have short-term restenosis. The excellent results obtained experimentally and clinically with the implantation of percutaneous intravascular stents have prompted us to use this material in the renal arteries. Stents were implanted in 10 patients who were followed up for periods of 1 to 16 months. Eight of them had restenosis after PTA; five of these stenoses were due to atheroma, 2 to fibromuscular dysplasia and 1 to Takayasu's disease. Two patients were implanted from the start owing to the insufficient results of PTA. Seven patients had severe arterial hypertension most probably of renovascular origin. Three patients had hypertension associated with moderate renal failure. Implantation was performed after a previous PTA. Adjuvant treatments and monitoring were the same in every case with, in particular, radiological control examination after one and six months. The implantations themselves were uneventful, and immediate control showed almost perfect anatomical restoration in all patients. On subsequent controls, arterial patency was preserved in all but one case. All patients showed significant clinical improvement. These results are most encouraging. They suggest that intravascular stents constitute an interesting solution when PTA is insufficient in the treatment of renal artery stenosis.
Joffre
F
F
Service central de radiologie, CHU Rangueil, Toulouse.
Bernadet
P
P
Rousseau
H
H
Nomblot
C
C
Durand
D
D
Chamontin
B
B
Suc
J M
JM
D000328:Adult; D000368:Aged; D000800:Angioplasty, Balloon / Q000379:methods; D001807:Blood Vessel Prosthesis; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000601:surgery* / Q000628:therapy
Utilité d'une endoprothèse percutanée dans le traitement des sténoses de l'artère rénale.