title: Reduction of iodinated contrast load with the renal artery catheterization technique during endovascular aortic repair.
abstract: OBJECTIVE
  We aimed to present our clinical experience with the renal artery catheterization (RAC) technique, which reduces the volume of intra-arterial contrast media (ICM) used during endovascular aortic repair (EVAR), and describe the short-term results of this technique.
  
  
  METHODS
  We retrospectively evaluated 16 patients (15 males and one female) who underwent EVAR between March 2011 and February 2012 using the RAC technique for an abdominal aortic aneurysm. A Simmons-1 catheter was preferred for renal artery cannulation. The mean age of the patients at the time of treatment was 70 years (range, 61-82 years). Fifteen cases were fusiform aneurysms, and one case was a saccular aneurysm. Creatinine and estimated glomerular filtration rate (eGFR) values were recorded before the procedure and during the first 72 hours postprocedure.
  
  
  RESULTS
  Bifurcated stent grafts were implanted with 100% procedural success using the RAC technique. The inferiorly positioned renal artery was cannulated with a Simmons-1 catheter in the first five patients, and was maintained at the level of the renal artery orifice in the remaining patients. The mean volume of the ICM used was 47 mL (range, 23-83 mL). The creatinine and eGFR values were not significantly different between the pre- and postoperative periods (P > 0.05).
  
  
  CONCLUSIONS
  Reducing the volume of ICM used during EVAR is critical for protecting renal function. The RAC technique is a safe and effective method in appropriate patients when performed by experienced clinicians.
authors.affiliation: Department of Radiology, Ankara Atatürk Training and Research Hospital, Ankara, Turkey. mcanyigit@yahoo.com
authors.forename: Murat
authors.initials: M
authors.lastname: Canyiğit
authors.forename: Levent
authors.initials: L
authors.lastname: Çetin
authors.forename: Emrah
authors.initials: E
authors.lastname: Uğuz
authors.forename: Oktay
authors.initials: O
authors.lastname: Algin
authors.forename: Aslihan
authors.initials: A
authors.lastname: Küçüker
authors.forename: Halil
authors.initials: H
authors.lastname: Arslan
authors.forename: Erol
authors.initials: E
authors.lastname: Şener
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000379:methods; D002406:Catheterization, Peripheral / Q000379:methods*; D003287:Contrast Media; D003404:Creatinine; D057510:Endovascular Procedures / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005919:Glomerular Filtration Rate; D006801:Humans; D007472:Iohexol; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement / Q000379:methods; D015641:Radiography, Interventional / Q000379:methods; D012077:Renal Artery / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D015607:Stents; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D007472:Iohexol; D003404:Creatinine