title: Effects of the low-osmolality contrast medium ioversol (Optiray) on renal function in a geriatric population.
abstract: OBJECTIVE
  To assess the incidence of nephrotoxicity following i.v. injection of the iodinated low-osmolality contrast medium ioversol 300 (Optiray) in a geriatric population compared with a control group aged under 60 years, neither group presenting any associated risk factors.
  
  
  METHODS
  CT with i.v. bolus injection of ioversol 300 mg I/ml was performed at a mean dose of 1.36+/-0.06 ml/kg (range 1-2 ml/kg b.w.) in 47 patients aged over 69 years. Serum creatinine level was measured and creatinine clearance was calculated at 24, 48 and 72 h after the examination, and compared to a reference serum creatinine value taken before CT. The findings were compared with a control group of 44 patients aged under 60 years.
  
  
  RESULTS
  No significant increase in serum creatinine (+0.6 mmol/l) or in creatinine clearance (+0.7 ml/min) was found during the course of 3 days after the injection. Only one patient (aged 82) presented an increase of 25% in serum creatinine (109 mmol/l).
  
  
  CONCLUSIONS
  The trial did not demonstrate any significant difference between the 2 groups, although the elderly patients had a subclinical renal impairment revealed by the decrease of the initial creatinine clearance. The use of low-osmolality ioversol makes it possible to perform examination with an iodinated contrast agent without increasing the incidence of nephrotoxicity in elderly subjects.
authors.affiliation: Service d'Imagerie Médicale, Hôpital de Bois Guillaume, CHRU Rouen, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Louvel
authors.forename: E
authors.initials: E
authors.lastname: Primard
authors.forename: J
authors.initials: J
authors.lastname: Henry
authors.forename: C
authors.initials: C
authors.lastname: Houlette
authors.forename: A
authors.initials: A
authors.lastname: Weinstein
authors.forename: A
authors.initials: A
authors.lastname: Janvresse
mesh_terms: D000367:Age Factors; D000368:Aged; D003287:Contrast Media / Q000009:adverse effects*; D003404:Creatinine / Q000097:blood; D006801:Humans; D007668:Kidney / Q000187:drug effects* / Q000502:physiology; D008875:Middle Aged; D012307:Risk Factors; D014057:Tomography, X-Ray Computed; D014283:Triiodobenzoic Acids / Q000009:adverse effects*
chemical_list: D003287:Contrast Media; D014283:Triiodobenzoic Acids; D003404:Creatinine; C054871:ioversol