Abstract
Purpose
We present the case of a 67-year-old woman with severely reduced renal clearance suffering from ceftazidime-induced encephalopathy. Subsequently, we search the literature to review and describe the neurotoxicity of ceftazidime.
Methods
A search string was developed to search PubMed for relevant cases from which relevant information was extracted. Using the collected data a ROC analysis was performed in R to determine a neurotoxicity threshold.
Results
Our patient suffered from progressive loss of consciousness and myoclonic seizures, with improvements noted a few days after discontinuation of treatment. The dose was not appropriately reduced to take into account her reduced renal function. The highest ceftazidime concentration recorded was 234.9 mg/mL. Using the Naranjo score we found a probable relationship between our patient’s encephalopathy and ceftazidime administration. In the literature we found a total of 32 similar cases, most of which also had some form of renal impairment. Using our collected data and ceftazidime concentrations provided in the literature, a ROC analysis provided a neurotoxicity threshold of 78 mg/L for ceftazidime neurotoxicity.
Conclusion
Ceftazidime-related neurotoxicity is a known issue, especially in patients with severe renal impairment. Yet no concrete toxicity threshold has been reported so far. We propose the first toxicity threshold for ceftazidime of 78 mg/L. Future prospective studies are needed to validate and optimize the neurotoxicity threshold as upper limit for ceftazidime therapeutic drug monitoring.
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Data availability
The data presented in this study are available on request from the corresponding author. The data are not publicly available due to privacy and ethical reasons.
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Conceptualization: DV, MG, IS; methodology: DV, MG; data curation: DV, MG, IS; writing—original draft preparation: DV, MG, IS; writing—review and editing: DV, MG, JM, WP, YD, JW, IS. All authors have read and agreed to the published version of the manuscript.
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Approval was obtained from the ethics committee of KU Leuven (S68320). The procedures used in this study adhere to the tenets of the Declaration of Helsinki.
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Informed consent was obtained from the patient in accordance with the local ethics committee policy.
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Vanneste, D., Gijsen, M., Maertens, J. et al. Ceftazidime-related neurotoxicity in a patient with renal impairment: a case report and literature review. Infection 52, 1113–1123 (2024). https://doi.org/10.1007/s15010-023-02167-9
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DOI: https://doi.org/10.1007/s15010-023-02167-9