Renal Artery Stenting in Patients with a Solitary FunctioningKidney

Purpose: To retrospectively evaluate the results of renal artery stenting in patients with renovascular disease and a solitary functioning kidney. Methods: Palmaz stents were placed in 16 patients with a solitary functioning kidney, renal artery stenosis, hypertension and renal failure. Stenoses wer...

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Bibliographic Details
Published in:Cardiovascular and interventional radiology 2001-12, Vol.24 (6), p.372-377
Main Authors: Cioni, Roberto, Vignali, Claudio, Petruzzi Pasquale, Neri Emanuele, Caramella Davide, Vagli Paola, Bargellini Irene, Napoli Vinicio, Pinto Stefania, Bartolozzi Carlo
Format: Article
Language:English
Subjects:
Angiography
Angioplasty
Blood pressure
Color
Creatinine
Doppler effect
Hypertension
Implants
Kidneys
Medical imaging
Patients
Recoil
Renal artery
Renal failure
Renal function
Stenosis
Stents
Ultrasonic imaging
Ultrasound
Veins & arteries
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Summary:Purpose: To retrospectively evaluate the results of renal artery stenting in patients with renovascular disease and a solitary functioning kidney. Methods: Palmaz stents were placed in 16 patients with a solitary functioning kidney, renal artery stenosis, hypertension and renal failure. Stenoses were evaluated with color Doppler ultrasound, MR angiography and digital subtraction angiography (DSA). Indications for stenting were: recoil after percutaneous transluminal renal angioplasty (PTRA) (63%), arterial dissection after PTRA (13%) and primary stenting (25%). Immediate results were evaluated by DSA. On follow-up (6-36 months), patients underwent periodical evaluation of clinical conditions (blood pressure and serum creatinine level) and stent patency, by means of color Doppler ultrasound. Results: Stent placement was successful in all patients (100%). Cumulative primary patency rate was: 100% at 1 day, 93.75% at 6 months, 81.25% at 12 months and 75% at 24 months. A significant reduction in diastolic blood pressure occurred (mean ± SD 104 ± 6 vs 92 ± 3; p < 0.05); renal function improved or stabilized in over 80% of patients. However, there was no significant difference in the creatinine values before and after treatment (mean ± SD 200 ± 142 mmol/l vs 197 ± 182 mmol/l; p > 0.05). Conclusion: Renal artery stenting, both after PTRA and as primary stenting, represents a safe procedure, able to preserve renal function in patients with a solitary functioning kidney.
ISSN:0174-1551
1432-086X
DOI:10.1007/s00270-001-0045-3