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Drug dosage in continuous venoveno hemofiltration in critically ill children
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The dosage of drugs in patients requiring continuous renal replacement therapy need to be adjusted based on a number of variables that that affect pharmacokinetics (PK) including patient weight, CRRT modality (convention, vs. diffusion), blood and/or effluent flow, hemofilter characteristics, physiochemical drug properties, volume of distribution, protein binding and half-life as well as residual renal function. There is a paucity of data on PK studies in children with acute kidney injury requiring CRRT. When possible, therapeutic drug monitoring should be utilized for those medications where serum drug concentrations can be obtained in a clinically relevant time frame. Also, a patient-centered team approach that includes an intensive care unit pharmacist is recommended to prevent medication-related errors and enhance safe and effective medication use is highly recommended. The aim of this article is to review the current guidelines for drug dosing in critically ill children who require continuous venovenous hemofiltration.