Abstract
To investigate the role of acute kidney injury staging in multiple organ dysfunction syndrome (MODS) patients with acute kidney injury (AKI) for deciding the opportune time of continuous blood purification (CBP). A retrospective study was conducted. One hundred and twenty-six MODS patients with AKI in general intensive care unit (ICU) and emergency intensive care unit (EICU) requiring continuous venous-venous hemofiltration treatment were enrolled. According to the criteria of "Kidney Disease: Improving Global Outcomes Organization (KDIGO standard)" and acute physiology and chronic health evaluation II (APACHEII) score, the patients were stratified into KDIGO 1, 2, 3 groups and APACHEII score of <15, 15-25, >25 groups. ICU survival rate and renal function outcome, CBP treatment total ultrafiltration, average ICU day and the average medical costs of survivals were compared among groups. Compared with APACHEII ≤ 25, KDIGO 1, 2 hospitalized patients had significantly higher survival rate [94.1% (32/34) vs. 76.8% (43/56), P<0.05]. Renal function improvement rate in survivors of KDIGO 1, 2 patients was significantly higher than that in APACHEII ≤ 25 [90.6% (29/32) vs. 62.8 (27/43), P<0.01], and number of patients requiring CBP treatment, mean ICU day, and medical expenses were significantly reduced (CBP treatment of total ultrafiltration: 199.0±44.7 L vs. 239.0 ± 73.3 L, the mean length of stay in ICU: 12.9±3.4 days vs. 15.1±4.8 days, medical expenses: 2.6±0.4 million vs. 3.0±1.0 million, all P<0.05). There was no significant difference in above indexes between survivors in KDIGO 3 and APACHEII>25, and the indexes in KDIGO 3 and APACHEII >25 were worse than those in KDIGD 1, 2 and APACHEII>25. In patients of MODS accompanied by AKI, compared using as APACHEIIscore≤25 as opportune time to start CBP, to commence the treatment in the period of KDIGO standard 1, 2 cannot only improve patient survival with recovery of renal function, but also can reduce the ICU stay and medical expenses.
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