title: [Effects of endovascular therapy for renal artery stenosis on blood pressure and renal function: retrospective analysis of an unselected patient collective from 1994 to 2007].
abstract: BACKGROUND
  A retrospective analysis of the long-term success rates of endoluminal therapy of renal artery stenosis in a university hospital was carried out.
  
  
  METHODS
  Preinterventional and postinterventional data contained in the clinical records of all 104 patients who underwent percutaneous transluminal angioplasty (PTA, 25 patients) or stent PTA (79 patients) from 01 January 1994 to 31 December 2007, were documented using an electronically structured questionnaire and a time period classification. Subgroup analyses and statistical calculations were done using t-tests for joint random samples.
  
  
  RESULTS
  At day 1 postintervention all patients showed a statistically significant decrease in mean systolic blood pressure (all patients: p=0.002, stent PTA group: p=0.023, PTA group: p=0.022). The significant decrease in mean systolic blood pressure persisted in years 1 and 2 postintervention (all patients: p=0.009 and 0.007, stent PTA group: p=0.039 and 0.015, respectively). Mean blood pressure values remained constant during the other time periods analyzed. In patients with a stent PTA carried out between 2001 and 2007 there was no significant reduction of prescribed antihypertonic drugs (p=0.023 and p=0.046, respectively). Mean serum creatinine concentrations decreased during years 1 and 2 postintervention and increased starting in year 3. In patients with elevated serum creatinine levels prior to the intervention the increase in mean serum creatinine level started in  year 5.
  
  
  CONCLUSIONS
  Endoluminal therapy of arteriosclerotic renal artery stenosis delays further deterioration of renal function and stabilizes blood pressure as well as the number of prescribed antihypertonic drugs. This can be considered a response to treatment in view of the mostly chronic progressive course of the disease.
authors: Institut und Poliklinik für Radiologische Diagnostik, Universität zu Köln, Josef-Stelzmann-Straße 9, 50924 Köln, Deutschland. Barbara.Krug@uk-koeln.de
authors: K B
authors: KB
authors: Krug
authors: O
authors: O
authors: Rehder
authors: H
authors: H
authors: Bovenschulte
authors: H
authors: H
authors: Schwabe
authors: V
authors: V
authors: Burst
authors: U
authors: U
authors: Engelmann
authors: R
authors: R
authors: Thul
authors: S
authors: S
authors: Mönig
authors: M
authors: M
authors: Hellmich
mesh_terms: D015984:Causality; D015897:Comorbidity; D057510:Endovascular Procedures / Q000706:statistics & numerical data*; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D015994:Incidence; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology*; D012078:Renal Artery Obstruction / Q000453:epidemiology* / Q000601:surgery*; D051437:Renal Insufficiency / Q000453:epidemiology*; D012307:Risk Factors; D013308:Streptonigrin
chemical_list: C079133:retrostatin; D013308:Streptonigrin