Table 1.
Demographic, preoperative, and procedure comparisons.
| Characteristic | Raw data | p Value | Weighted data | p Value | ||
|---|---|---|---|---|---|---|
| Control (n = 130) | GDP (n = 47) | Control (n = 130) | GDP (n = 47) | |||
| Age years, mean (SD) | 68 (11) | 68 (11) | .86 | 68 (13) | 69 (18) | .36 |
| Gender, n (%) female | 46 (35%) | 23 (49%) | .14 | 39% | 38% | .93 |
| Body mass index, mean (SD) | 29 (5.7) | 28 (6.1) | .14 | 29 (7) | 29 (12) | .83 |
| Body surface area, mean (SD) | 2.0 (.26) | 1.9 (.26) | .08 | 2.0 (.30) | 2.0 (.47) | .73 |
| Diabetic, n (%) | 52 (40%) | 19 (40%) | 1.00 | 42% | 45% | .69 |
| Congestive heart failure, n (%) | 86 (66%) | 32 (68%) | .95 | 67% | 69% | .87 |
| Preoperative hematocrit, mean (SD) | 38 (5.3) | 39 (5.7) | .66 | 38 (6.3) | 39 (11.8) | .19 |
| Preoperative hemoglobin, mean (SD) | 13 (1.9) | 13 (2.0) | .79 | 13 (2.3) | 13 (4.1) | .47 |
| Preoperative platelets (thou/uL), mean (SD) | 216 (63) | 228 (130) | .57 | 218 (74) | 221 (245) | .85 |
| Previous cardiac surgery, n (%) | 19 (15%) | 5 (11%) | .66 | 14% | 11% | .66 |
| Cleveland clinic score, mean (SD) | 4.1 (1.1) | 4.0 (1.1) | .62 | 4.1 (1.3) | 4.1 (2.2) | .94 |
| Intra-aortic balloon pump, n (%) | 13 (10%) | 13 (28%) | .007 | 14% | 15% | .82 |
| Surgery urgency level | .02 | .04 | ||||
| Elective, n (%) | 61 (47%) | 12 (26%) | 41% | 30% | ||
| Urgent, n (%) | 69 (53%) | 35 (74%) | 59% | 70% | ||
| Procedure | .003 | .51 | ||||
| Isolated CABG, n (%) | 26 (20%) | 12 (26%) | 22% | 27% | ||
| Isolated valve, n (%) | 10 (8%) | 7 (15%) | 10% | 10% | ||
| CABG + Valve, n (%) | 33 (25%) | 20 (43%) | 29% | 31% | ||
| Other, n (%) | 61 (47%) | 8 (17%) | 40% | 32% | ||
| Cardiopulmonary bypass time, min, mean (SD) | 150 (64) | 141 (57) | .41 | 149 (77) | 151 (108) | .91 |
| Preoperative creatinine, mean (SD) | 1.1 (.42) | 1.1 (.38) | .28 | 1.1 (.48) | 1.1 (.72) | .80 |
CABG, coronary artery bypass grafting; GDP, goal-directed perfusion; SD, standard deviation.
49% of Control patients and 34% of GDP patients were unable to be scored.