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  • Title: Pharmacokinetics of rocuronium bromide in patients with and without renal failure.
    Author: Cooper RA, Mirakhur RK, Wierda JM, Maddineni VR.
    Journal: Eur J Anaesthesiol Suppl; 1995 Sep; 11():43-4. PubMed ID: 8557005.
    Abstract:
    We studied the onset and duration of action and pharmacokinetics of rocuronium bromide during anaesthesia with nitrous oxide, fentanyl and isoflurane after a single bolus dose of rocuronium (0.6 mg kg-1) in nine patients with chronic renal failure requiring regular haemodialysis, and in nine healthy control patients. Blood samples were collected over 390 min and concentrations of rocuronium and its putative metabolites measured using HPLC. Onset time for maximum block and duration of clinical relaxation (DUR25) were 61 (SD 25.0) s and 65 (16.4) s, 55 (26.9) min and 42 (9.3) min, respectively, for patients with and without renal failure. The time for train-of-four ratio to return spontaneously to 0.7 was 99 (41.1) min and 73 (24.2) min, respectively, in the two groups. None of these differences was significant. The pharmacokinetic data were best described by a three-exponential equation. There were significant differences between patients with and without renal failure in the rates of clearance (2.5 (1.1) mL kg-1 min-1 and 3.7 (1.4) mL kg-1 min-1, respectively) and the mean residence times (97.1 (48.7) min and 58.3 (9.6) min) (P < 0.05). The differences in other kinetic parameters were not significant.
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