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  • Title: [Transfer of injected sulbactam/cefoperazone into burn blister fluid].
    Author: Aoyama H, Sugiyama H, Tada M, Okuda J, Izawa Y.
    Journal: Jpn J Antibiot; 1988 Sep; 41(9):1279-84. PubMed ID: 3241326.
    Abstract:
    Transfer of sulbactam/cefoperazone (SBT/CPZ) into the burn blister fluid was studied in 10 burn patients after one shot intravenous injection of 50 mg/kg SBT/CPZ (CPZ 25 mg/kg, SBT 25 mg/kg). CPZ and SBT concentrations in serum and burn blister fluid were determined using bioassay and high performance liquid chromatography (HPLC). The concentration of CPZ in serum reached 109.5 +/- 9.2 micrograms/ml (mean +/- S.E.) at 0.25 hour after injection, and decreased to 6.8 +/- 2.3 micrograms/ml after 8 hours. The concentration of CPZ in burn blister fluid peaked at 4 hours and reached 28.2 +/- 8.0 micrograms/ml. The concentration of SBT in serum reached 75.7 +/- 8.3 micrograms/ml at 0.25 hour after injection, and decreased to 2.3 +/- 0.7 micrograms/ml after 8 hours. The peak concentration of SBT in burn blister fluid was 13.5 +/- 1.8 micrograms/ml at 3 hours. The data obtained were analysed pharmacokinetically. Cmax of CPZ and SBT levels in burn blister fluid were calculated to be 30.4 micrograms/ml and 13.6 micrograms/ml, respectively. The AUC0-8 hrs. (area under the burn blister fluid concentration of drug-time curve between 0 and 8 hours after injection), absorption rate constant (ka) and therapeutic AUC (AUC where drug concentrations were above minimum effective concentration) of CPZ were calculated to be 194.0 micrograms.hr/ml, 1.52 hr-1 and 97.1 micrograms.hr/ml (0.3-11.1 hours), respectively. The AUC0-8 hrs. and ka of SBT were also calculated as 68.3 micrograms.hr/ml and 0.62 hr-1, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
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