Nephrotoxicity, high frequency ototoxicity, efficacy and serum kinetics of once versus thrice daily dosing of netilmicin in patients with serious infections

Blaser, J.; Simmen, H. P.; Thurnheer, U; König, C.; Lüthy, R. (1995). Nephrotoxicity, high frequency ototoxicity, efficacy and serum kinetics of once versus thrice daily dosing of netilmicin in patients with serious infections. Journal of antimicrobial chemotherapy, 36(5), pp. 803-814. Oxford University Press 10.1093/jac/36.5.803

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The effect of dosing regimen on nephrotoxicity, high frequency ototoxicity, efficacy and serum kinetics was studied in a prospective, randomised clinical study. Therapy was started with total daily doses of 6 mg/kg given once (od) or thrice (tid) daily to 56 and 57 patients, respectively. Subsequent doses were adjusted according to serum levels. No major differences in toxicity or efficacy were noticed between od and tid regimens: clinical failures occurred in two and two patients, four and five patients suffered from a decrease of ≥20 dB at least unilaterally at one frequency between 8 and 18 kHz, six and seven patients had a >25 μmol/L or >25% increase in serum creatinine, respectively. Serum creatinine or creatinine clearance did not change significantly during either therapy. Major differences between the two study groups were limited to pharmacokinetic parameters. Od dosing resulted in higher peak (mean of 21.6 vs 7.2 mg/L) and lower trough levels (0.5 vs 1.4mg/L). Half-lives of netilmicin determined between 1 and 8 h increased significantly during therapy with tid (from a mean of 2.75 to a mean of 3.33 h, P<0.01) but not significantly with od (rise from 2.8 to 3.03 h). Much longer half-lives were determined between 8 and 24 h in the od group (mean of 5.7 h, P<0.01). In conclusion, only minimal differences in toxicity and efficacy were observed. Their clinical relevance appears to be minimal.

Item Type:

Journal Article (Original Article)

ISSN:

0305-7453

Publisher:

Oxford University Press

Language:

English

Submitter:

Marceline Brodmann

Date Deposited:

07 Sep 2020 15:39

Last Modified:

07 Sep 2020 15:39

Publisher DOI:

10.1093/jac/36.5.803

BORIS DOI:

10.7892/boris.115529

URI:

https://boris.unibe.ch/id/eprint/115529

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