title: Pharmacokinetics of gadodiamide injection in patients with severe renal insufficiency and patients undergoing hemodialysis or continuous ambulatory peritoneal dialysis.
abstract: OBJECTIVE
  The authors performed this study to evaluate the pharmacokinetics, dialysability, and safety of gadodiamide injection in patients with severely reduced renal function not treated with renal replacement therapy and patients undergoing hemodialysis or continuous ambulatory peritoneal dialysis.
  
  
  METHODS
  Twenty-seven patients--nine with severely reduced renal function (glomerular filtration rate, 2-10 mL/min), nine undergoing hemodialysis, and nine undergoing continuous ambulatory peritoneal dialysis--were followed up for 5, 8, and 22 days, respectively, after receiving gadodiamide injection (0.1 mmol per kilogram body weight).
  
  
  RESULTS
  Gadodiamide injection caused no changes in renal function. In patients with severely reduced renal function, the elimination half-life of gadodiamide injection was prolonged (34.3 hours +/- 22.9) compared with data in healthy volunteers (1.3 hours +/- 0.25). An average of 65% of the gadodiamide injected was eliminated during a hemodialysis session. After 22 days of continuous ambulatory peritoneal dialysis, 69% of the total amount of gadodiamide was excreted; this reflects the low peritoneal clearance. In all patients, no metabolism or transmetallation of gadodiamide was found. There were no contrast material-related adverse events.
  
  
  CONCLUSIONS
  Gadodiamide is dialysable and can safely be used in patients with severely impaired renal function or those undergoing hemodialysis or continuous ambulatory peritoneal dialysis. No precautions to increase the elimination are necessary.
authors.affiliation: Department of Nephrology, Copenhagen University Hospital at Herlev, Denmark.
authors.forename: P
authors.initials: P
authors.lastname: Joffe
authors.forename: H S
authors.initials: HS
authors.lastname: Thomsen
authors.forename: M
authors.initials: M
authors.lastname: Meusel
mesh_terms: D000328:Adult; D000368:Aged; D002851:Chromatography, High Pressure Liquid; D003287:Contrast Media / Q000493:pharmacokinetics*; D005260:Female; D005500:Follow-Up Studies; D019786:Gadolinium DTPA / Q000493:pharmacokinetics*; D006207:Half-Life; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D010531:Peritoneal Dialysis, Continuous Ambulatory; D006435:Renal Dialysis; D051437:Renal Insufficiency / Q000378:metabolism* / Q000628:therapy
chemical_list: D003287:Contrast Media; C064925:gadodiamide; D019786:Gadolinium DTPA