Aminoglycoside Pharmacokinetics on a Microcomputer

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Abstract
The authors describe the use of a microcomputer to evaluate an existing dosage regimen and to determine a new regimen and steady-state peak and trough levels for four aminoglycoside antibiotics — Amikacin, gentamicin, kanamycin, and tobramycin. The microcomputer program is based on a one-compartment open pharmacokinetic model for the aminoglycosides. It accounts for patients' sex, age, height, obesity, and ascitic compartment. The program is divided into seven subprograms for each of the four aminoglycosides: (1) steady-state peak and trough levels are predicted, based on serum creatinine for a given dosage regimen; (2) a dosage regimen that conforms to 6, 8, 12, 16, or 24 hours is ascertained, based on serum creatinine; (3) a dosage regimen is determined, on the basis of serum creatinine, for desired steady-state peak and trough levels; (4) a dosage regimen that conforms to 6, 8, 12, 16, or 24 hours is ascertained for given aminoglycoside serum levels; (5) a dosage regimen for desired peak and trough levels is ascertained for given aminoglycoside serum levels; (6) a dosage regimen that conforms to 6, 8, 12, 16, or 24 hours is ascertained from data collected using Sawchuk's and Zaske's method; and (7) a dosage regimen, estimated for desired peak and trough levels, is estimated from data collected using Sawchuk's and Zaske's method.

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