PMID- 22843155 OWN - NLM STAT- MEDLINE DCOM- 20121001 LR - 20151119 IS - 0393-5590 (Print) IS - 0393-5590 (Linking) VI - 29 IP - 4 DP - 2012 Jul-Aug TI - [Pharmacokinetics of antibiotics in continuous renal replacement therapies (CRRT)]. PG - 425-44 AB - In the critically ill patient, acute kidney injury (AKI) is frequently associated with infective complications requiring appropriate antimicrobial treatment. AKI and multiple organ dysfunction syndrome can affect the pharmacokinetic parameters of many drugs. Furthermore, the start of renal replacement therapy (RRT) is an additional variable to be taken into consideration to avoid inappropriate antimicrobial therapy. Continuous renal replacement therapies (CRRT) are widely adopted in the intensive care unit (ICU) and antibiotics that are significantly eliminated by the kidney are likely to be removed during RRT. Generally, drug-dosing adjustments are required if the extracorporeal clearance accounts for more than 25-30% of the total body clearance. The molecular weight cutoffs of the more widely used membranes are much higher than the molecular weight of most drugs. Therefore, molecular size will not be a limitation for the removal of the unbound fraction of the antibiotics most commonly used in ICU patients. However, CRRTs are still not standardized and the impact of RRT on plasma drug concentrations can be substantially different depending on the CRRT modality (diffusive, convective or both), membrane characteristics and delivered dialysis dose. In any case, drug-dosing adjustments should be based on the knowledge of the pharmacokinetic and pharmacodynamic properties of the different classes of antimicrobials, taking into account that high extracorporeal clearances could lead to drug underexposure in clinical conditions where appropriate antibiotic treatment is essential. FAU - Morabito, Santo AU - Morabito S AD - Dipartimento Nefrologia e Urologia, Umberto I, Policlinico di Roma, ''Sapienza'', Universita' di Roma, Italy. santo.morabito@uniromal.it FAU - Pistolesi, Valentina AU - Pistolesi V FAU - Maggiore, Umberto AU - Maggiore U FAU - Fiaccadori, Enrico AU - Fiaccadori E FAU - Pierucci, Alessandro AU - Pierucci A LA - ita PT - English Abstract PT - Journal Article TT - Farmacocinetica degli antibiotici nelle terapie sostitutive renali continue (CRRT). PL - Italy TA - G Ital Nefrol JT - Giornale italiano di nefrologia : organo ufficiale della Societa italiana di nefrologia JID - 9426434 RN - 0 (Anti-Bacterial Agents) SB - IM MH - Acute Kidney Injury/complications/therapy MH - Anti-Bacterial Agents/administration & dosage/*pharmacokinetics MH - Bacterial Infections/drug therapy/etiology MH - Humans MH - *Renal Replacement Therapy MH - Surveys and Questionnaires EDAT- 2012/07/31 06:00 MHDA- 2012/10/02 06:00 CRDT- 2012/07/31 06:00 PHST- 2012/07/31 06:00 [entrez] PHST- 2012/07/31 06:00 [pubmed] PHST- 2012/10/02 06:00 [medline] PST - ppublish SO - G Ital Nefrol. 2012 Jul-Aug;29(4):425-44.