A Conservative Dialysis Strategy and Kidney Function Recovery in Dialysis-Requiring Acute Kidney Injury: The Liberation From Acute Dialysis (LIBERATE-D) Randomized Clinical Trial.
In the LIBERATE-D randomized trial, a conservative dialysis strategy in patients with dialysis-requiring acute kidney injury led to higher rates of and faster kidney function recovery than conventional thrice-weekly dialysis in the unadjusted analysis.
Background
Acute kidney injury requiring dialysis is increasingly common, and a persistent need for dialysis is tied to higher morbidity and mortality, greater health care use, and reduced quality of life. There has been concern that the dialysis procedure itself may delay or obscure recovery of native kidney function. LIBERATE-D tested whether limiting dialysis to specific clinical or metabolic indications could improve the likelihood of recovery.
Study design
This multicenter, unblinded, randomized superiority trial enrolled 221 hemodynamically stable patients with dialysis-requiring acute kidney injury and a baseline eGFR above 15 mL/min/1.73 m2 across 4 US sites; 220 received the allocated intervention. The conservative-strategy group received dialysis only when metabolic or clinical indications were met, while the conventional group received dialysis three times weekly until urine output or creatinine-clearance criteria were met. The primary endpoint was kidney function recovery at hospital discharge, defined as being alive and off dialysis for at least 14 consecutive days.
Key findings
Kidney function recovery at discharge occurred in 64% (70 of 109) of the conservative-strategy group versus 50% (55 of 109) of the conventional group, a 13.8-percentage-point difference (unadjusted odds ratio 1.76); after prespecified adjustment the effect was no longer statistically significant (odds ratio 1.56). The conservative group received fewer dialysis sessions per week (median 1.8 vs 3.1), recovered earlier (16 more dialysis-free days to day 28), and had fewer episodes of dialysis-associated hypotension (69 vs 97 events).
Clinical implications
Tailoring dialysis to specific indications rather than a fixed thrice-weekly schedule may promote earlier kidney recovery and reduce dialysis exposure and hemodynamic complications in selected patients. However, the loss of significance after adjustment and uncertainty about the effect size led the investigators to call for confirmation in a larger trial before routine adoption.
Category
Research
Source
JAMA
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