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Continuous infusion ceftazidime in intensive care: a randomized controlled trial
J Lipman1, C D Gomersall, T Gin
1Royal Brisbane Hospital, Division of Anaesthesiology and Intensive Care, University of Queensland, Brisbane, Australia. jlipman@gasbone.herston.uq.edu.au
The Journal of Antimicrobial Chemotherapy
|March 17, 2001
Summary
Continuous infusion of ceftazidime maintains therapeutic drug levels in critically ill patients more effectively than intermittent bolus dosing. This approach ensures consistent drug exposure, potentially improving patient outcomes in critical care settings.
Area of Science:
- Pharmacology
- Critical Care Medicine
- Infectious Diseases
Background:
- Ceftazidime is a crucial antibiotic for treating severe infections.
- Optimizing ceftazidime dosing in critically ill patients is essential for efficacy.
- Continuous infusion and bolus dosing represent different pharmacokinetic strategies.
Purpose of the Study:
- To compare the pharmacokinetic profiles of continuous infusion versus bolus dosing of ceftazidime in critically ill patients.
- To evaluate the achievement and maintenance of target plasma ceftazidime concentrations.
Main Methods:
- Randomized study of 18 critically ill patients.
- Comparison of ceftazidime 6 g/day via continuous infusion versus bolus dosing (2 g every 8 hours).
- Inclusion of a standardized loading dose (12 mg/kg).
Main Results:
- Continuous infusion maintained plasma ceftazidime concentrations above 40 mg/L for longer durations compared to bolus dosing.
- Fewer patients in the infusion group experienced sub-therapeutic levels within the first 8 hours.
- Significantly higher drug exposure was observed with continuous infusion over 40 hours.
Conclusions:
- Continuous infusion of ceftazidime demonstrates superior pharmacokinetic performance in critically ill patients.
- The data support further clinical investigation of continuous infusion ceftazidime in outcome-based studies.
- Optimized dosing strategies are critical for effective antibiotic therapy in critical care.