Venous thromboembolism (VTE), which encompasses deep vein thrombosis (DVT) and pulmonary embolism (PE), is a major cause of preventable mortality in hospitalized patients. The Padua Prediction Score was developed to identify which hospitalized medical patients are at high risk for VTE and would benefit from thromboprophylaxis.
The Need for Risk Stratification
While it might seem safest to give blood thinners to every hospitalized patient, anticoagulants carry a significant risk of major bleeding. Therefore, clinicians must balance the risk of a clot against the risk of bleeding. The Padua score helps quantify the clot risk objectively.
Components of the Score
The model assigns heavy weighting (3 points each) to major risk factors:
- Active cancer
- Previous VTE
- Reduced mobility
- Known thrombophilic conditions
Moderate and minor factors receive 1 to 2 points, including recent trauma/surgery, elderly age, heart/respiratory failure, acute infarction, infections, obesity, and hormonal treatment.
Padua Score = Sum of weighted points for VTE risk factors.
Interpretation
- Score < 4: The patient is at low risk (~0.3%) for VTE. Pharmacologic prophylaxis is generally not warranted, reducing unnecessary exposure to bleeding risks.
- Score ≥ 4: The patient is at high risk (~11%) for VTE. Prophylactic anticoagulation is strongly recommended unless there are specific contraindications (like active gastrointestinal bleeding or severe thrombocytopenia).