II. Criteria
- PE more likely than alternatives: 3.0 points
- Deep Vein Thrombosis (DVT) suspected: 3.0 points
- Tachycardia (pulse >100 beats per minute): 1.5 points
- Surgery or immobilization in last 4 weeks: 1.5 points
- Prior DVT or Pulmonary Embolism: 1.5 points
- Hemoptysis: 1.0 points
- Active malignancy: 1.0 points
III. Interpretation
- Score 0-2 points: Low PE Probability (3.6% risk)
- Score 3-6 points: Moderate PE Probability (20.5% risk)
- Score >6 points: High PE Probability (66.7% risk)
IV. Interpretation: Simplified
- Score 4 or less: Unlikely
- Score >4: Likely
- D-Dimer negative with "unlikely" score safely excludes Pulmonary Embolism