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- W3001697708 abstract "Background: Emerging studies suggest that levetiracetam pharmacokinetics can be difficult to predict in certain special patient populations, including the elderly, critically ill patients, and pregnant women. Objective: To determine clinical characteristics that predict the attainment of target serum concentrations in a heterogeneous group of patients prescribed levetiracetam. Methods: A retrospective observational study was conducted in adult neurological patients prescribed levetiracetam for the treatment or prophylaxis of seizures. Serum samples were collected after steady-state was reached, with a trough/steady-state serum concentration between 6 and 20 mg/L considered therapeutic. Logistic regression was used to identify significant predictors associated with the attainment of therapeutic concentrations. Results: One-hundred thirty patients (63 male) were included. The median (interquartile ranges) serum trough/steady-state concentration (C min/ss ) was 16.2 (9.8–26.1) mg/L. The dose-normalized median (interquartile range) C min/ss was 11.5 (7.0–16.5) mg/L. The coefficient of variation of C min/ss and dose-normalized C min/ss were 69.4% and 64.2%, respectively. A weak correlation was observed between levetiracetam C min/ss and patient age (r = 0.21; P = 0.020), creatinine clearance (r = −0.26; P = 0.004), and daily dose (r = 0.42; P < 0.001). Logistic regression analysis identified age and daily levetiracetam dose as significant factors predicting target C min/ss attainment. The influence of concomitant antiepileptic therapy was not determined. Conclusions: Age and daily dose were the most significant predictors of levetiracetam target-concentration attainment and should be considered in further investigations to develop a dosing algorithm for optimal levetiracetam therapy." @default.
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- W3001697708 date "2020-08-01" @default.
- W3001697708 modified "2023-10-05" @default.
- W3001697708 title "What Are the Predictors for Achieving Therapeutic Levetiracetam Serum Concentrations in Adult Neurological Patients?" @default.
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- W3001697708 doi "https://doi.org/10.1097/ftd.0000000000000731" @default.
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