title: Efficacy of oral cyclosporine given prior to liver transplantation.
abstract: The bioavailability of oral cyclosporine (CYS) dissolved in a large quantity of milk given just before liver transplantation (LTX) was evaluated in 30 patients, given randomly timed oral CYS before LTX, by measurements of CYS blood levels at induction, 2 h later, and at the time of graft reperfusion. Adequate blood CYS levels, defined as greater than or equal to 500 ng/mL (FPIA), could reliably be achieved only when the drug was administered 4 to 7 h preoperatively. Patients receiving the drug less than 4 h preoperatively generally had low levels thereafter (two of seven patients had greater than or equal to 500 ng/mL in any sample, compared with 13 of 14 patients in the 4-7-h group, P less than 0.011); an interval of greater than 7 h yielded unpredictable results. Fluids and blood products transfused, and preoperative ascites or ICU care, were not related to blood CYS levels. Oral CYS should be given 4 to 7 h before LTX to achieve adequate levels.
authors.affiliation: Department of Anesthesiology, Baylor University Medical Center, Dallas, TX 75246.
authors.forename: M R
authors.initials: MR
authors.lastname: Brown
authors.forename: D
authors.initials: D
authors.lastname: Brajtbord
authors.forename: D W
authors.initials: DW
authors.lastname: Johnson
authors.forename: M A
authors.initials: MA
authors.lastname: Ramsay
authors.forename: A W
authors.initials: AW
authors.lastname: Paulsen
mesh_terms: D000758:Anesthesia; D003524:Cyclosporins / Q000008:administration & dosage* / Q000493:pharmacokinetics; D006801:Humans; D016031:Liver Transplantation; D008657:Metabolic Clearance Rate; D012044:Regression Analysis; D013997:Time Factors
chemical_list: D003524:Cyclosporins