Table 2.
The RCOS prognostic index.
| Reference range | Prognostic score | |
|---|---|---|
| Age (years) | ||
| 40–49 | 1 | |
| 50–59 | 2 | |
| 60–69 | 3 | |
| ≥70 | 4 | |
| Systolic BP (mm Hg) ≥ 140 | 1 | |
| Heart rate (pm) ≥ 100 | 1 | |
| Respiratory rate (pm) ≥ 22 | 2 | |
| AST (IU/L) | 0 to 40 | |
| 40–79 | 1 to 2x UNL | 1 |
| ≥80 | >2x UNL | 2 |
| LDH (IU/L) | 207 to 414 | |
| 700–899 | 1.69 to 2.17x UNL | 1 |
| ≥900 | >2.17x UNL | 2 |
| Urea (mg/dL) | 15 to 39 | |
| 40–49.9 | 1 to 1.25x UNL | 2 |
| ≥50 | >1.25x UNL | 3 |
| C-reactive protein (mg/dL) | 0 to 0.5 | |
| 0.5–0.9 | 1 to 1.99x UNL | 1 |
| 1–1.9 | 2 to 3.99x UNL | 2 |
| 2–3.9 | 4 to 7.99x UNL | 3 |
| 4–5.9 | 8 to 11.99x UNL | 4 |
| 6–8.9 | 12 to 17.99x UNL | 5 |
| 9–11.9 | 18 to 23.99x UNL | 6 |
| ≥12 | ≥24x UNL | 7 |
| Sodium-mmol/L < 135 | 135 to 148 | 1 |
| Lymphocyte count (×10^9/L) | 1 to 5 | |
| <0.8 | 3 | |
| 0.8–0.999 | 1 | |
| Neutrophil count (×10^9/L) | 1.2 to 8 | |
| 8–9.9 | 1 | |
| ≥10 | 2 | |
| Neutrophil/lymphocyte ratio | ||
| 3–3.9 | 1 | |
| 4–5.9 | 2 | |
| 6–7.9 | 3 | |
| ≥8 | 4 |
BP, blood pressure; pm, per minute; AST, aspartate transaminase; LDH, lactate dehydrogenase; UNL, upper normal limit; LNL lower normal limit.