Abstract
Prescribing drugs in patients with kidney disease is complex: drug dosing needs to be adjusted by the stage of kidney disease (whether chronic kidney disease [CKD] stages 1 through 5 or acute kidney injury [AKI] stages 1 through 3); because potential interactions with other agents that are being used need to be considered; and because of the possibility of extracorporeal treatment that might need to be used (e.g., continuous renal replacement therapy [CRRT], peritoneal dialysis [PD], or hemodialysis [HD]). Besides this complexity, there has been an explosion in the classes of new agents and the routes of delivery of these agents. The purpose of this chapter is to review the basic pharmacokinetic and pharmacologic principles that should guide therapy and to summarize basic recommendations for patients with CKD and AKI. The general principles for drug dosing in CKD and AKI include pharmacokinetics in renal failure; bioavailability; volume of distribution; protein binding; and biotransformation. A stepwise approach to dosage adjustment is described and created as an algorithmic approach. Drug dosing considerations in dialysis patients and in AKI patients are covered as well. This chapter contains 2 algorithms, 7 tables, 25 references, 5 Board-styled MCQs, and 1 Teaching Slide Set.
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