Table 1.
Comparison of baseline characteristics between patients who received gauze surgical dressings before June 2017, and patients who received silver-impregnated surgical dressings after June 2017.
| Gauze dressings Group A, N = 464 |
Silver dressings Group B, N = 505 |
p valuea | |
|---|---|---|---|
| Characteristics | Mean (± Standard Deviation) | ||
| Age, years | 62.2 (13) | 61.2 (13.3) | 0.23 |
| BMI, kg/m2 | 30 (5.6) | 30 (6.3) | 0.99 |
| Hemoglobin A1C, mg/dL | 6 (1.7) | 6.1 (1.7) | 0.41 |
| Cardiac bypass time, min | 106.5 (46.6) | 109.1 (53.2) | 0.41 |
| Peak glucose, mg/dL | 179.1 (41.3) | 186.9 (62.1) | 0.02a |
| Peak creatinine, mg/dL | 1.6 (1.6) | 1.5 (1.5) | 0.45 |
| Ventilation time, hour | 17.4 (46.9) | 20.6 (48.6) | 0.30 |
| Length of stay, days | 8.1 (5.9) | 7.6 (5.3) | 0.19 |
| n (%) | |||
| Sex, female | 128 (27.6) | 160 (31.7) | 0.16 |
| Current smoker | 260 (56) | 291 (57.6) | 0.62 |
| Severe COPDb | 39 (8.4) | 26 (5.1) | 0.04a |
| Diabetes | 177 (38.1) | 170 (33.7) | 0.15 |
| Hypertension | 386 (83.2) | 410 (81.2) | 0.42 |
| Dyslipidemia | 361 (77.8) | 400 (78.2) | 0.59 |
| Dialysis | 17 (3.7) | 13 (2.6) | 0.33 |
| Emergent operation | 35 (7.5) | 44 (8.7) | 0.51 |
| Valve procedure | 190 (41) | 193 (38.2) | 0.38 |
| Blood products | 186 (40) | 189 (37.4) | 0.40 |
a
p < 0.05, statistically significant
b
FEV1 < 50% of predicted