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Long-term follow-up after renal artery stenting
Robert A Bucek1, Stefan Puchner, Markus Reiter
1Department of Angiography and Interventional Radiology, University Clinic for Radiology, Vienna General Hospital, Vienna, Austria. robert.bucek@akh-wien.ac.at
Wiener Klinische Wochenschrift
|January 28, 2004
Summary
Percutaneous transluminal angioplasty with stenting (PTRAS) shows excellent long-term morphological results for renal artery stenosis. However, clinical outcomes for hypertension and kidney function remain only moderate after treatment.
Area of Science:
- Interventional cardiology
- Nephrology
- Vascular surgery
Background:
- Renal artery stenosis can lead to secondary hypertension and end-stage renal disease.
- Percutaneous transluminal angioplasty with stent implantation (PTRAS) is an effective treatment with high technical success rates.
- Long-term morphological and clinical outcomes of PTRAS require further evaluation.
Purpose of the Study:
- To assess the long-term restenosis rate after PTRAS.
- To evaluate the impact of PTRAS on arterial hypertension.
- To determine changes in renal function following PTRAS.
Main Methods:
- Prospective enrollment of 40 patients with successful main renal artery stenting.
- Long-term follow-up (median 3.3 years) including risk factor assessment.
- Evaluation of blood pressure, serum creatinine, and multi-detector computed tomography angiography (CTA).
Main Results:
- Restenosis rates were 12.5% and 15% by two observers after median follow-up.
- Arterial hypertension improved in 37.5% of patients but persisted in all.
- Serum creatinine increased in 25% of patients, with a mean level of 1.3 mg/dl.
Conclusions:
- PTRAS demonstrates excellent long-term morphological results for renal artery stenosis.
- Clinical outcomes concerning arterial hypertension and renal function following PTRAS are only moderate.
- Long-term monitoring is crucial for patients treated with PTRAS.