|  | Randomized to leukodepletion filter (n = 32) | Randomized to standard filter (n = 31) | Overall (n = 63) | ||||
---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | (95% CI) | ||
PRIMARY OUTCOME: | ||||||||
 Any AKI | At any time | 14/32 | 44% | 7/31 | 23% | 21/63 | 33% | (0.22, 0.46) |
Prior to discharge | 14/29 | 48% | 6/25 | 24% | 20/54 | 37% | Â | |
Between discharge and 6 weeks ~ | 0/26 | 0% | 1/24 | 4% | 1/50 | 2% |  | |
 Highest AKI stage | Stage 1 | 9/14 | 64% | 4/6 | 67% | 13/20 | 65% |  |
Stage 2 | 4/14 | 29% | 1/6 | 17% | 5/20 | 25% | Â | |
Stage 3 | 1/14 | 7% | 1/6 | 17% | 2/20 | 10% | Â | |
 First instance of AKI | Day 1 | 9/14 | 64% | 2/6 | 33% | 11/20 | 55% |  |
Day 2 | 4/14 | 29% | 3/6 | 50% | 7/20 | 35% | Â | |
Day 3 to discharge | 1/14 | 7% | 1/6 | 17% | 2/20 | 10% | Â | |
 Maximum AKI stage | Day 1 | 6/14 | 43% | 0/6 | 0% | 6/20 | 30% |  |
Day 2 | 7/14 | 50% | 5/6 | 83% | 12/20 | 60% | Â | |
Day 3 to discharge | 1/14 | 7% | 1/6 | 17% | 2/20 | 10% | Â | |
SECONDARY OUTCOMES: | ||||||||
 Need for haemodialysis | 1/32 | 3% | 0/31 | 0% | 1/63 | 2% | (0.0,0.1) | |
 In hospital mortality | 2/32 | 6% | 0/31 | 0% | 2/63 | 3% | (0.0,0.1) | |
 Infection complications | 5/32 | 16% | 4/31 | 13% | 9/63 | 14% | (0.1,0.3) | |
Length of post-operative stay | Median (IQR) days | 7.7 | (5.8, 13.9) | 8.8 | (5.9, 11.7) | 7.9 | (5.9, 12.0) |  |
CICU length of stay | Median (IQR) days | 47.3 | (24.8, 100.0) | 48.5 | (26.6, 92.8) | 48.5 | (25.0, 98.3) | Â |
Ward length of stay | Median (IQR) days | 120.8 | (94.0, 168.8) | 141.5 | (92.0, 188.4) | 121.3 | (93.5, 187.0) | Â |