Table 2.
Postoperative characteristics
| Control | Nutri. supple. | Statistics | |
|---|---|---|---|
| Maximum Hb drop, g/L | 31.4 ± 4.1 | 30.3 ± 4.1 | t = 2.44, P = 0.01 |
| Amount of ALB infusion, g | 61 ± 22 | 44 ± 18 | M–W U = 6384.5, P< 0.001 |
| Amount of wound effusion | |||
| Little (0,1), n/% | 51/32 | 65/45 | M–W U = 9627.5, P = 0.005 |
| Moderate (2,3), n/% | 45/28 | 42/29 | |
| Large (4,5), n/% | 65/40 | 38/26 | |
| Complications | |||
| wound complication, n/% | 27/16.8 | 11/7.6 | χ2 = 5.92, P = 0.02 |
| SSI, n/% | 21/13.0 | 8/5.5 | χ2 = 5.04, P = 0.03 |
| PJI, n/% | 16/9.9 | 4/2.8 | χ2 = 6.44, P = 0.01 |
| Nausea, n/% | 29/18.0 | 23/15.9 | χ2 = 0.25, P = 0.62 |
| Vomiting, n/% | 28/17.4 | 18/12.4 | χ2 = 1.48, P = 0.22 |
| Diarrhea, n/% | 5/3.1 | 6/4.1 | χ2 = 0.24, P = 0.63 |
| Others, n/% | 0 | 0 | – |
| 30-day readmission, n/% | 14/8.7 | 3/2.1 | χ2 = 6.39, P = 0.01 |
| Reasons of readmission | |||
| Wound complications, n/% | 2/1.2 | 2/1.4 | χ2 = 0.15a, P = 0.69 |
| Dislocation, n/% | 1/0.6 | 1/0.7 | χ2 = 0.40a, P = 0.52 |
| Gastrointestinal diseases, n/% | 8/5.0 | 0 | – |
| MI, n/% | 1/0.6 | 0 | – |
| DVT, n/% | 1/0.6 | 0 | – |
| Pneumonia, n/% | 1/0.6 | 0 | – |
| 30-day reoperation, n/% | 4/2.5 | 3/2.1 | P = 1b |
| Total hospital length of stay, days | 10.7 ± 2.0 | 9.2 ± 1.8 | M–W U = 6520.0, P < 0.001 |
Nutr. supple. nutritional supplementation; SSI surgical site infection; PJI periprosthetic joint infection; MI myocardial infarction; DVT deep vein thrombosis
aContinuity correction
bFisher’s exact test