Table 7.
Incidence of AKI in the control group and the NaHCO 3 group according to the surgical procedure
| Surgery type | AKIN | Control group | NaHCO 3 group | Free hemoglobin | ||||
|---|---|---|---|---|---|---|---|---|
| Number | % | Number | % | P -value | Median | IQR | ||
| CABG | AKIN 0 | 40 | 48.2 | 65 | 65.7 | 0.0261 | 43.5 | 32, 62 |
| AKIN >0 | 43 | 51.8 | 34 | 34.3 | ||||
| Valve | AKIN 0 | 18 | 58.1 | 15 | 68.2 | 0.6447 | 54 | 37.25, 66.25 |
| AKIN >0 | 13 | 41.9 | 7 | 31.8 | ||||
| CABG + valve | AKIN 0 | 10 | 43.5 | 9 | 52.9 | 0.7885 | 60 | 49.5, 78.5 |
| AKIN >0 | 13 | 56.5 | 8 | 47.1 | ||||
| Other | AKIN 0 | 16 | 51.6 | 23 | 63.9 | 0.4428 | 57 | 42, 78 |
| AKIN >0 | 15 | 48.4 | 13 | 36.1 | ||||
In the subgroup of coronary artery bypass graft (CABG) surgery patients, the acute kidney injury (AKI) incidence was reduced significantly when patients were treated with sodium bicarbonate. The median concentrations and IQRs of free hemoglobin for each subgroup are also presented. AKIN, Acute Kidney Injury Network classification.