Table 1:
Demographics and Pre-operative Risk Factors. The diagnosis of AKI was based on the KDIGO criteria.7
| No AKI (n=33) |
AKI (n=53) |
P value | |
|---|---|---|---|
| Age (years), mean ± SD | 62 ± 16 | 64 ± 12 | 0.628 |
| Female, n (%) | 10 (30) | 18 (34) | 0.725 |
| Body Mass Index (kg/m2), mean ± SD | 26 ± 5 | 30 ± 6 | 0.006 |
| Type of Surgery | |||
| Isolated CABG, n (%) | 8 (24) | 16 (30) | 0.550 |
| Single Valve, n (%) | 7 (21) | 13 (25) | 0.723 |
| Single Valve + CABG, n (%) | 3 (9) | 8 (15) | 0.418 |
| >1 Valve, n (%) | 4 (12) | 6 (11) | 0.910 |
| Left Ventricular Assist Device, n (%) | 4 (12) | 4 (8) | 0.476 |
| Other, n (%)* | 8 (24) | 8 (15) | 0.289 |
| Risk Factors/Comorbidities | |||
| New York Heart Associate Class >II, n (%) | 10 (30) | 18 (34) | 0.725 |
| Left Ventricular Ejection Fraction <35%, n (%) | 3 (9) | 7 (13) | 0.562 |
| Pre-operative Intra-aortic Balloon Pump, n (%) | 0 (0) | 1 (2) | >0.999 |
| COPD, n (%) | 5 (15) | 3 (6) | 0.251 |
| Insulin Dependent Diabetes, n (%) | 2 (6) | 15 (28) | 0.012 |
| Redo sternotomy, n (%) | 8 (24) | 8 (15) | 0.289 |
| Baseline Creatinine (mg/dl), mean ±SD | 1.11 ± 0.51 | 1.14 ± 0.31 | 0.700 |
| Glomerular Filtration Rate (ml/min/1.73m2), mean ± SD | 75 ± 26 | 67 ± 20 | 0.109 |
| Cleveland Risk Score, mean ± SD | 4 ± 2 | 4 ± 2 | 0.867 |
| Euroscore (%), median (Interquartile range) | 3 (2–7) | 3 (2–5) | 0.461 |
Categorical variables compared with chi-square test or Fisher’s exact test and continuous variables compared with an independent sample t-test or Wilcoxon rank sum test.
*
Other= septal myectomy, aortic procedures, and pulmonary endarterectomies.
CABG = coronary artery bypass grafting; COPD = chronic obstructive pulmonary disease; SD = standard deviation; There were no missing data in this table.