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A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
Published on: February 2, 2021
Restenosis following percutaneous renal artery revascularization
Garvan C Kane1, Niamh Hambly, Stephen C Textor
1Division of Cardiovascular Diseases, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
Nephron. Clinical Practice
|September 13, 2007
Summary
Restenosis after renal angioplasty is linked to higher body weight. Repeat angioplasty can successfully improve blood pressure in about half of patients with renal artery restenosis.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Nephrology
Background:
- Renal artery restenosis after percutaneous transluminal renal angioplasty (PTRA) is a persistent clinical challenge.
- The efficacy of repeat PTRA for managing hypertension secondary to renal artery restenosis requires further investigation.
Purpose of the Study:
- To identify risk factors associated with restenosis after initial PTRA.
- To evaluate the blood pressure outcomes in patients undergoing repeat PTRA for recurrent renal artery restenosis.
Main Methods:
- A case-control study comparing 32 patients with recurrent hypertension and restenosis to a matched control group.
- Analysis of clinical and procedural characteristics, including body weight, BMI, and comorbidities.
- Assessment of blood pressure changes following repeat PTRA at long-term follow-up.
Main Results:
- Increased body weight and body mass index were significant risk factors for restenosis (p=0.003 and p=0.008, respectively).
- Repeat PTRA provided measurable blood pressure benefit in 17 out of 32 patients (53%) at a mean follow-up of 177 weeks.
- Diabetes mellitus, hyperlipidemia, and statin therapy were not independent predictors of restenosis.
Conclusions:
- Elevated body mass index is a key risk factor for restenosis post-PTRA.
- Repeat PTRA is a viable treatment option for renal artery restenosis, offering sustained blood pressure control in approximately half of the treated patients.
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