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. 2018 Jun;21(2):215-219.
doi: 10.1007/s10047-017-1001-6. Epub 2017 Oct 23.

Acetaminophen clearance during ex vivo continuous renal replacement therapies

Bridget A Scoville  1 , Vera Vulaj  2 , Bruce A Mueller  2 , Gail M Annich  3 , Deborah S Wagner  4   5
Affiliations

Acetaminophen clearance during ex vivo continuous renal replacement therapies

Bridget A Scoville et al. J Artif Organs. 2018 Jun.

Abstract

Intravenous acetaminophen is an adjuvant to opioid use in critically ill and surgical patients requiring continuous renal replacement therapy (CRRT). The objective of this study was to determine the ex vivo transmembrane clearance of intravenous acetaminophen during continuous hemofiltration and hemodialysis. Transmembrane clearance was assessed using a validated ex vivo bovine blood model for CRRT using an F8 or HF1400 hemodiafilter. Ultrafiltrate and dialysate flow rates were 1, 2, and 3 L/h. Urea and acetaminophen clearances were calculated and compared. Acetaminophen was readily cleared by continuous hemofiltration with both hemodiafilters. Acetaminophen clearance rates were 92-98% of ultrafiltrate production rates. Similarly, dialytic acetaminophen clearances approximated dialysate flow rates for both hemodiafilters. Acetaminophen is readily cleared by CRRT. Patients receiving CRRT and acetaminophen may require increased doses for adequate pain control.

Keywords: Continuous renal replacement therapy; Critical care; Dialysisex vivo clearance; Intravenous acetaminophen.

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