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  • Title: Improving peak concentrations of a single dose regime of gentamicin in patients with sepsis in the emergency department.
    Author: Cobussen M, Stassen PM, Posthouwer D, van Tiel FH, Savelkoul PHM, Havenith T, Haeseker MB.
    Journal: PLoS One; 2019; 14(1):e0210012. PubMed ID: 30668571.
    Abstract:
    OBJECTIVE: To achieve an optimal effect in patients with sepsis at the emergency department (ED), the gentamicin peak-concentration should be sufficiently high (i.e. peak-concentration/MIC ≥8-10). ICU patients with sepsis often need higher gentamicin doses to achieve sufficiently high peak-concentrations. The aim of this study is to investigate which dose is needed to reach adequate peak-concentrations in patients presenting with sepsis at the ED. METHODS: Patients with sepsis at the ED were included from August 2015 until February 2017. Peak-concentrations were measured in blood 30 minutes after the first gentamicin dose. The study consisted of three phases. In the first phase, peak-concentrations were measured after a standard dose of 5mg/kg. In the second phase, a simulation ((peak-concentration/actual dose) × simulated dose) was performed to determine which dose was needed to reach adequate gentamicin peak-concentrations of ≥16mg/L. In the third phase, peak-concentrations were measured for the best simulated dose. RESULTS: In phase one, of 86 patients who received a dose of 5mg/kg, 34 (39.5%) patients did not reach the target peak-concentration of ≥16mg/L, and 73 (84.9%) did not reach ≥20mg/L. In phase two, the simulation showed that with a dose of 7mg/kg 83 (96.5%) patients would reach peak-concentrations ≥16mg/L, and 67 (77.9%) of ≥20mg/L. In phase three, 53 patients received a dose of 7mg/kg, of whom 45 (84.9%) reached peak-concentrations of ≥16mg/L, and 31 (58.5%) of ≥20mg/L. CONCLUSION: Patients with sepsis at the ED need higher doses of gentamicin. A dose of 7mg/kg is needed to achieve adequate peak-concentrations in the majority of patients.
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