Table 1.
Study definitions
| Laboratory Risk Indicator For Necrotizing Fasciitis | |
|---|---|
| Variable (units) | Score points |
| C-Reactive Protein (CRP) (mg/L) | |
| <150 >150 |
0 4 |
| White blood cell count (per mm3) | |
| <15 15-25 >25 |
0 1 2 |
| Hemoglobin (g/dl) | |
| >13.5 11-13.5 <11 |
0 1 2 |
| Serum Sodium (mmol/L) | |
| ≥135 <135 |
0 2 |
| Serum Creatinine (mg/dl) | |
| ≤1.6 >1.6 |
0 2 |
| Serum Glucose (mg/dl) | |
| ≤180 >180 |
0 1 |
| Types of NF based on microorganisms | |
| Type I | NF comprised of synergistic polymicrobial infection |
| Type II | NF is caused by monomicrobial gram positive organisms |
| Type III | NF involves gram negative monobacteria usually marine-related organisms |
| Type IV | NF is caused by fungal infection |