Depends: "occlusion" means 100% blockage. "stenosis" means <100% blockage. If you have abrupt or very recent occlusion or stenosis, the artery can be dilated and stented using a wire & balloon (angioplasty). If there is chronic occlusion, the kidney has been permanently damaged and there's no benefit in doing anything further to the artery.
Answered 7/20/2012
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