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Anticoagulation, delivered dose and outcomes in CRRT: The program to improve care
in acute renal disease (PICARD)
#MMPMID24620987
Claure-Del Granado R
; Macedo E
; Soroko S
; Kim Y
; Chertow GM
; Himmelfarb J
; Ikizler TA
; Paganini EP
; Mehta RL
Hemodial Int
2014[Jul]; 18
(3
): 641-9
PMID24620987
show ga
Delivered dialysis dose by continuous renal replacement therapies (CRRT) depends
on circuit efficacy, which is influenced in part by the anticoagulation strategy.
We evaluated the association of anticoagulation strategy used on solute clearance
efficacy, circuit longevity, bleeding complications, and mortality. We analyzed
data from 1740 sessions 24?h in length among 244 critically ill patients, with at
least 48?h on CRRT. Regional citrate, heparin, or saline flushes was variably
used to prevent or attenuate filter clotting. We calculated delivered dose using
the standardized Kt/Vurea . We monitored filter efficacy by calculating effluent
urea nitrogen/blood urea nitrogen ratios. Filter longevity was significantly
higher with citrate (median 48, interquartile range [IQR] 20.3-75.0 hours) than
with heparin (5.9, IQR 8.5-27.0 hours) or no anticoagulation (17.5, IQR 9.5-32
hours, P?0.0001). Delivered dose was highest in treatments where citrate was
employed. Bleeding complications were similar across the three groups (P?=?0.25).
Compared with no anticoagulation, odds of death was higher with the heparin use
(odds ratio [OR] 1.82, 95% confidence interval [CI] 1.02-3.32; P?=?0.033), but
not with citrate (OR 1.02 95% CI 0.54-1.96; P?=?0.53). Relative to heparin or no
anticoagulation, the use of regional citrate for anticoagulation in CRRT was
associated with significantly prolonged filter life and increased filter efficacy
with respect to delivered dialysis dose. Rates of bleeding complications,
transfusions, and mortality were similar across the three groups. While these and
other data suggest that citrate anticoagulation may offer superior technical
performance than heparin or no anticoagulation, adequately powered clinical
trials comparing alternative anticoagulation strategies should be performed to
evaluate overall safety and efficacy.