13 June 2022>: Database Analysis
Retrospective Study from a Single Center to Identify Risk Factors Associated with Reinfection in Patients Undergoing 2-Stage Revision Surgery for Periprosthetic Joint Infection
Bingshi Zhang ABCE , Zeming Liu CE , Sikai Liu BC , Bo Liu BC , Mengnan Li B , Wenao Li E , Yongtai Han ABCDE*DOI: 10.12659/MSM.936973
Med Sci Monit 2022; 28:e936973
Table 5 Scoring system for predicting infection recurrence in patients with PJI undergoing 2-stage hip revision surgery.
Risk factors | β-coefficient | Predictive score (total=100 points) |
---|---|---|
CRP | ||
Ref. | 0 | |
30–80 mg/L | 1.205 | 7.5 |
>80 mg/L | 2.323 | 14.5 |
Bacterial infection | ||
Negative | Ref. | 0 |
G+ bacteria | 1.195 | 7.5 |
G− bacteria | 2.551 | 16 |
Age (years) | ||
Ref. | 0 | |
40–70 | 0.852 | 5.5 |
>70 | 1.875 | 12 |
Immunosuppression | ||
No | Ref. | 0 |
Yes | 2.205 | 14 |
Albumin/globulin | ||
>2 | Ref. | 0 |
2–0.8 | 0.852 | 5.5 |
1.211 | 7.5 | |
Glucose | ||
Ref. | 0 | |
5.6–11.2 | 1.209 | 7.5 |
>11.2 | 2.208 | 14 |
MRI findings | ||
Negative findings | Ref. | 0 |
Lamellated hyperintense synovitis or soft tissue edema | 2.427 | 15 |
Both | 3.501 | 22 |
Ref. – reference; CRP – C-reactive protein. The AUC of this scoring system was 0.965 (95% CI=0.947–0.983). The total score was the sum of the scores for each item. The predictive scores for a low risk (estimated incidence of infection recurrence ≤30%), moderate risk (estimated incidence of infection recurrence of 31–69%), and high risk (estimated incidence of infection recurrence ≥70%) of infection recurrence were ≤45 points, 46–77 points and ≥78 points, respectively. |