This would have been in Minnesota over 30 years ago. It normalized his kidney function for the rest of his life. As far as I know, it never bothered him once it was in place.
Here is more information for you:
https://my.clevelandclinic.org/health/treatments/14868-renal-artery-stenting

@igho by your doctor saying you had Renal Artery Stenosis means the blood flow to kidneys is diminished sufficiently to cause you to retain more fluid, hence elevated BP. As you requested here is some information.
https://my.clevelandclinic.org/health/treatments/14868-renal-artery-stenting