title: Long-term follow-up of renal transplant patients with renal artery stenosis treated by percutaneous angioplasty.
abstract: OBJECTIVE
  To evaluate if renal angioplasty (PTRA) in patients with transplanted kidney and renal artery stenosis (TRAS) can have long-term effect on hypertension and renal function.
  
  
  METHODS
  Within a 24-year time period, 58 PTRAs in 55 adults (three times Re-PTRA) with transplanted kidney were performed. The group included 34 males and 21 females, average age 41+/-10.6 (18-72) years. After exclusion of 7 technical failures, 51 PTRAs were followed at 1 week, 6 months and 1-3 years after PTRA. Hypertension improvement was defined as mean arterial pressure (MAP) decrease of at least 15% from the pre-PTRA value. Graft function was evaluated by serum creatinine (Scr) and creatinine clearance (Ccr) levels, and the improvement was defined as a 20% change. Clinical FU was 3 years.
  
  
  RESULTS
  PTRA technical success was 88.4%. In 51 kidney recipients at the end of FU, blood pressure improved in 65.2% of patients (MAP decreased from 123+/-13.1 to 107+/-12.1 mmHg), but no patient remained normotensive medication free. Graft function improved in 44.8% of patients and was stabilized in 20.7% of them (average Ccr before PTRA: 0.48+/-0.29, after PTRA: 0.78+/-47 ml/s). PTRA complications were observed in 25.5% of procedures, most often with no clinical sequel. Thirty days mortality was 1.8% (one patient).
  
  
  CONCLUSIONS
  PTRA results in kidney recipients are valuable mainly in preserving graft function.
authors.affiliation: Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídenská 1958/9, 14021 Prague 4, Czech Republic. jape@medicon.cz
authors.forename: Jan H
authors.initials: JH
authors.lastname: Peregrin
authors.forename: Jarmila
authors.initials: J
authors.lastname: Stríbrná
authors.forename: Jirí
authors.initials: J
authors.lastname: Lácha
authors.forename: Jelena
authors.initials: J
authors.lastname: Skibová
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D000792:Angiography; D000800:Angioplasty, Balloon; D016009:Chi-Square Distribution; D005260:Female; D005500:Follow-Up Studies; D006085:Graft Survival; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000209:etiology; D016030:Kidney Transplantation; D008297:Male; D008875:Middle Aged; D015641:Radiography, Interventional; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy*; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome