Table 2.
Microbial findings in 124 patients with PJI.
| All PJI, n=124 (%) | DTT PJI, n=28 (%) | Non-DTT PJI, n=95 (%) | |
|---|---|---|---|
| Monomicrobial PJI | 93 (74.9) | 10 (35.6) | 83 (87.3) |
| Gram-positive bacteria | 72(58) | 6 (21.4) | 66 (69.4) |
| Staphylococcus spp. | 53 (42.7) | 6 (21.4) | 47 (49.4) |
| Staphylococcus aureus | 31(25) | 1 (3.5) | 30 (31.5) |
| Staphylococcus epidermidis | 16 (12.9) | 5 (17.8) | 11 (11.5) |
| Coagulase-negative staphylococci | 6 (4.8) | - | 6 (6.3) |
| Streptococcus spp. | 9 (7.2) | - | 9 (9.4) |
| Enterococcus spp. | 4 (3.2) | - | 4 (4.2) |
| Other1 | 6 (4.8) | - | 6 (6,3) |
| Gram-negative bacteria | 21 (16.9) | 4 (14.3) | 17 (17.9) |
| Escherichia coli | 10(8) | 4 (14.3) | 6 (6,3) |
| Enterobactericaceae spp.2 | 9 (7.2) | - | 9 (9.4) |
| Pseudomonas aeruginosa | 2 (1.6) | - | 2 (2.1) |
| Polymicrobial PJI | 30 (24.2) | 18 (64.3) | 12 (12.6) |
| Negative culture | 1 (0.8) | - | - |
Data presented as absolute Number (Percentage). Abbreviations: PJI periprosthetic joint infection, DTT difficult-to-treat. 1Including Corynebacterium spp. (n=3), Micrococcus spp. (n=2), Pediococcus spp. 2Including Enterobacter spp. (n=4), Klebsiella spp. (n=3), Citrobacter spp., Serratia marcescens.