Items | Clinical decision rule points | |
Original version [91] | Simplified version [87] | |
Previous PE or DVT | 3 | 1 |
Heart rate | ||
75–94 b.p.m. | 3 | 1 |
≥95 b.p.m. | 5 | 2 |
Surgery or fracture within the past month | 2 | 1 |
Haemoptysis | 2 | 1 |
Active cancer | 2 | 1 |
Unilateral lower-limb pain | 3 | 1 |
Pain on lower-limb deep venous palpation and unilateral oedema | 4 | 1 |
Age >65 years | 1 | 1 |
Clinical probability | ||
Three-level score | ||
Low | 0–3 | 0–1 |
Intermediate | 4–10 | 2–4 |
High | ≥11 | ≥5 |
Two-level score | ||
PE-unlikely | 0–5 | 0–2 |
PE-likely | ≥6 | ≥3 |
b.p.m.: beats per minute; DVT: deep vein thrombosis; PE: pulmonary embolism.