Summary
The pharmacokinetics of ceftazidime have been investigated after single and multiple i.v. doses in 9 young healthy male volunteers and 15 elderly male patients with acute bacterial infections. All subjects had normal, age-correlated glomerular function.
Distribution and elimination in young volunteers were unaffected by posture and were similar to what has been reported earlier. In contrast, elderly patients had longer t1/2β (3.1 vs 1.9 h), larger AUC (414.0 vs 276.6 h·mg/l), lower total and renal clearances, reduced urinary recovery over 12 h and enlarged Vss. Total serum clearance of ceftazidime was closely correlated with the51Cr-EDTA clearance. There was no significant change in51Cr-EDTA clearance after seven days of treatment.
A reduction in the dose of betalactam antibiotics eliminated by the kidney is advisable in elderly patients with an acute bacterial infection.
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Ljungberg, B., Nilsson-Ehle, I. Comparative pharmacokinetics of ceftazidime in young, healthy and elderly, acutely ill males. Eur J Clin Pharmacol 34, 179–186 (1988). https://doi.org/10.1007/BF00614556
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DOI: https://doi.org/10.1007/BF00614556