Definition of contrast-induced acute kidney injury (CI-AKI) and incidence in the control group
| Definition of CI-AKI | # of studies | Incidence of CI-AKI (%) in the control group |
| Increase of sCr ≥0.5 mg/dL or reduction in eGFR ≥25% within 48 hours | 1 | 13.3%21 |
| Increase of sCr ≥0.5 mg/dL or increase sCr ≥25% within 48 hours | 20 | 0%,39 2.7%,33 3.4%,44 5%,30 5.4%,42 6.3%,36 6.4%,28 6.6%,46 6.9%,47 10.0%,57 11.8%,54 13%,3413.6%,55 14%,16 14.3%,15 14.3%,56 16.6%,43 23.8%,18 25%,27 44.8%19 |
| Increase of sCr ≥0.5 mg/dL or increase sCr ≥25% within 72 hours | 4 | 3.9%,45 12.5%,35 20.3%,52 20%,59 17.5%61 |
| Increase of sCr ≥0.5 mg/dL or increase sCr ≥25% within 120 hours | 2 | 14%,50 20%,41 8.4%62 |
| Increase of sCr ≥0.5 mg/dL or increase sCr ≥25% within 192 hours | 1 | 20.7%32 |
| Increase of sCr ≥0.5 mg/dL or increase sCr ≥25% no timeframe. | 1 | 16%60 |
| Increase of sCr ≥0.5 mg/dL within 24 hours | 1 | 5.8%29 |
| Increase of sCr ≥0.5 mg/dL within 48 hours | 9 | 6.0%,37 6.9%,53 8%,22 8%,23 12%–15.3%,48 20%,38 22.0%,20 24.6%31 |
| Increase of sCr ≥0.5 mg/dL within 72 hours | 1 | 32.1%49 |
| Increase sCr ≥25% within 48 hours | 1 | 12%24 |
| Increase sCr ≥25% within 72 hours | 2 | 22.2%,26 32%25 |
| Increase sCr ≥25% within 96 hours | 2 | 7.3%,40 21%,17 |
| Increase sCr ≥25% no timeframe | 1 | 30%51 |
| Increase of sCr ≥44.2 µmol/L within 48 hours | 1 | 10.1%58 |
eGFR, estimated glomerular filtration rate; sCr, serum creatinine.