Table 3.
Data comparison between patients with IAPUs and those without IAPUs
| With IAPUs (n = 7) | Without IAPUs (n = 258) | p value | |
|---|---|---|---|
| Age (years) | 60.9 ± 26.6 | 60.2 ± 14.3 | 0.49 |
| HT (cm) | 150.0 ± 9.4 | 156.8 ± 9.6 | 0.04 |
| WT (Kg) | 53.2 ± 7.9 | 56.9 ± 12.3 | 0.53 |
| BMI (Kg/m2) | 23.9 ± 4.7 | 23.1 ± 4.2 | 0.77 |
| Hemoglobin (g/dl) | 13.0 ± 0.7 | 13.0 ± 1.5 | 0.97 |
| Albumin (g/dl) | 4.4 ± 0.3 | 4.2 ± 0.4 | 0.33 |
| Length of surgery (minutes) | 267.4 ± 122.0 | 172.5 ± 66.1 | 0.0026 |
| Amount of bleeding (ml) | 412.1 ± 179.3 | 298.2 ± 242.5 | 0.041 |
| Braden Scale score | 22.1 ± 1.1 | 21.2 ± 0.6 | 0.22 |
| Sex (Male:Female) | 2:5 | 62:196 | 0.78 |
| Steroid use (Yes:No) | 0:7 | 14:244 | 0.53 |
| Diabetes (Yes:No) | 1:6 | 33:225 | 0.91 |
| Smoking (Yes:No) | 0:7 | 35:223 | 0.30 |
| Pelvic positioner (PS:ASIS) | 6:1 | 84:174 | 0.0034 |
| Surgical procedure (THA:reTHA:PO:Ir) | 3:2:2:0 | 219:20:14:5 | 0.011 |
The data are shown as mean ± SD for continuous variables or number for categorical variables
Residual analysis was performed in surgical procedures; revision THA and pelvic or proximal femoral osteotomy were more frequently performed in in patients with IAPUs than in those without (p = 0.011, adjusted standardized residual in revision THA = 1.97, adjusted standardized residual in pelvic or proximal femoral osteotomy = 2.53)
IAPU Intraoperatively acquired pressure ulcer, HT Height, WT Weight, BMI Body mass index, NPUAP National Pressure Ulcer Advisory Panel, THA Total hip arthroplasty, re THA Revision THA, PO Periacetabular osteotomy, PS Pubic symphysis type, ASIS Anterior superior iliac spine type, DDH Developmental dysplasia of the hip