title: Treatment of atheromatous renal artery in-stent restenosis in 51 patients.
abstract: OBJECTIVE
  To evaluate our treatment of renal artery in-stent restenosis.
  
  
  METHODS
  Monocentric retrospective study of 53 cases of restenosis and two occlusions in 51 patients detected via systematic follow-up with imaging (72.5%) and/or deterioration of kidney function (5.9%) and/or blood pressure failure (54.9%), 15.7 months (5-121) after implantation, giving rise to 49 recalibrations via a balloon and five additional stentings. Analysis of the technical results, the effects on blood pressure and kidney function after repeated revascularizations.
  
  
  RESULTS
  Secondary permeability of 38 arteries (63.2%) after 12.4 months (3-64) with 14 second restenoses; 33.3% after redilation with a balloon, 60% after renewed stenting, more common in smokers (P=0.02), in case of peripheral arterial disease (P=0.02), ostial location (P=0.049) and kidney function impairment at the time of diagnosis of the restenosis (P=0.012). After 12.7 months (3-64) post-revascularization, kidney function was improved in 30% of patients and stabilised in 50% of patients. Treatment of second restenoses: one failure (7.1%), nine dilations with a balloon, three cutting balloon, one second stent. Treatment of third restenoses: 71.4% treated with a balloon (2), cutting balloon (2) or coated stent (DES) (1); then permeability at a later point in time: 50%.
  
  
  CONCLUSIONS
  The treatment of repeated restenoses with conventional techniques is of imperfect efficacy, and currently remains un-codified.
authors.affiliation: Service de Radiologie B [Radiology Department B], CHU de Clermont-Ferrand, University Hospital Centre, BP 69, 63003 Clermont-Ferrand, France.
authors.forename: A
authors.initials: A
authors.lastname: Ndoye Diop
authors.forename: V
authors.initials: V
authors.lastname: Vo Hoang
authors.forename: L
authors.initials: L
authors.lastname: Cassagnes
authors.forename: A
authors.initials: A
authors.lastname: Alfidja Lankoaonde
authors.forename: E
authors.initials: E
authors.lastname: Dumousset
authors.forename: A
authors.initials: A
authors.lastname: Ravel
authors.forename: L
authors.initials: L
authors.lastname: Boyer
authors.forename: P
authors.initials: P
authors.lastname: Chabrot
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D058226:Plaque, Atherosclerotic / Q000150:complications / Q000601:surgery*; D012008:Recurrence; D012078:Renal Artery Obstruction / Q000209:etiology / Q000601:surgery*; D012189:Retrospective Studies; D015607:Stents