Table 1.
Baseline characteristics of patients with postoperative PJI treated with DAIR.
| Variable | Total ( ) |
|---|---|
| Demographic and host-related characteristics | |
| Male sex | 91 (40.6) |
| Age (years), median (IQR) | 71 (64–78) |
| Charlson Comorbidity Index, median (IQR) | 1 (0–1) |
| Charlson Comorbidity Index
3,
(%) |
23 (10.3) |
| Laboratory parameters at diagnosis | |
| Haemoglobin (g dL−1), median (IQR) | 10.6 (9.5–11.6) |
| Leucocyte count (cell mm−3), median (IQR) | 8470 (6500–11 450) |
| CRP (mg L−1), median (IQR) | 75.5 (26–150) |
| CRP
150 mg L−1
|
46/186 (24.7) |
| Surgical characteristics | |
| Fracture as indication of arthroplasty | 60 (26.8) |
| Hip PJI | 117 (52.3) |
| Revision prosthesis | 71 (31.7) |
| Cemented prosthesis | 142/190 (74.7) |
| Days to DAIR, median (IQR) | 36 (22–65) |
| Follow-up from DAIR in days, median (IQR) |
657 (381–852) |
| Microbiological features | |
| Bacteraemia at PJI diagnosis |
17/221 (7.7) |
| Aetiology | |
| Negative cultures | 22 (9.8) |
| Staphylococcus aureus | 65 (29) |
| Coagulase-negative staphylococci | 42 (18.8) |
| Streptococcus/Enterococcus spp. | 18 (8) |
| Gram-negative bacilli | 42 (18.8) |
| Polymicrobial | 25 (11.2) |
| Anaerobes | 6 (2.7) |
| Others |
4 (1.8) |
| Outcome | |
| DAIR failure | 121 (54 %) |
Data are presented as number (percentage) unless otherwise indicated. Denominators vary due to missing data and are indicated where applicable. CRP: C-reactive protein; PJI: prosthetic joint infection; DAIR: debridement, antibiotics, and implant retention.