Gentamicin dosage regimen based on serum creatinine concentration.
In order to avoid gentamicin toxicity trough serum concentrations when drug monitoring is not available, a correction factor for serum creatinine was calculated and evaluated. In a first group of 35 patients under aminoglycoside treatment with variable serum creatinine (SCr) values, the regression plot of SCr concentrations versus half-life (T1/2) values was established: log T1/2 = log 2.28 + 1.45 log SCr, r = 0.90, p less than 0.01. A second group of 18 patients was treated with doses of 1.0 mg/kg of gentamicin. Dose intervals equivalent to 3 T1/2 were daily adjusted. The T1/2 was calculated from SCr according to the relationship established for the patients of the first group. All the patients studied maintained trough levels within the therapeutic range.
Malvino
E
E
Special Care Division, Policlínica Bancaria, Buenos Aires, Argentina.
Goldenberg
D
D
Giniger
R
R
Casabella
A
A
Jorge
M
M
D000328:Adult; D000368:Aged; D001424:Bacterial Infections / Q000097:blood / Q000188:drug therapy*; D003404:Creatinine / Q000097:blood*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005839:Gentamicins / Q000008:administration & dosage* / Q000493:pharmacokinetics; D005919:Glomerular Filtration Rate; D006207:Half-Life; D006801:Humans; D008875:Middle Aged
D005839:Gentamicins; D003404:Creatinine