Padua Score Calculator

Sum the 11 weighted risk factors of the Padua Prediction Score to classify a hospitalized medical patient's venous thromboembolism (VTE) risk as low or high.

Quick Facts

Score range
0 to 20 points
Sum of 11 weighted risk factors (3, 2, or 1 point each).
High-risk threshold
4 points or more
Barbar et al. 2010 derivation and validation cohort of hospitalized medical patients.
Age and BMI cutoffs
Age 70+, BMI 30+
Each adds 1 point when met; age and BMI below those cutoffs add 0.

Your Results

Calculated
Padua score
-
Total points (0-20)
Risk category
-
Low (<4) or high (≥4)
Factors present
-
Count of the 11 risk factors
Age / BMI points
-
Points from age 70+ and BMI 30+

Ready

Set each risk factor, enter age and BMI, then calculate the Padua score.

About the Padua Prediction Score

The Padua Prediction Score is a risk-assessment model that identifies hospitalized, non-surgical (medical) patients at elevated risk for venous thromboembolism (VTE) — deep vein thrombosis and pulmonary embolism. It was derived and validated by Barbar and colleagues in 2010 from a cohort of over 1,000 acutely ill medical inpatients, and it is referenced in clinical VTE-prevention guidelines as a way to decide who needs pharmacologic thromboprophylaxis during admission.

How the score is built

The score sums points across 11 risk factors, each scored as present or absent:

  • 3 points each: active cancer (local or metastatic disease, or chemotherapy/radiotherapy within the prior 6 months), previous VTE (excluding superficial vein thrombosis), reduced mobility (bedrest with bathroom privileges for at least 3 days, due to the patient's limitations or a physician's order), and a known thrombophilic condition (such as antithrombin, protein C or S deficiency, factor V Leiden, prothrombin G20210A mutation, or antiphospholipid syndrome).
  • 2 points: recent trauma or surgery within the past month.
  • 1 point each: age 70 years or older, heart and/or respiratory failure, acute myocardial infarction or ischemic stroke, acute infection and/or a rheumatologic disorder, obesity (BMI 30 kg/m2 or higher), and ongoing hormonal treatment.

Adding every present factor's points gives a total from 0 to 20. There is no partial credit — each factor is either fully present or absent.

Interpreting the result

A total of 4 or more points classifies the patient as high risk for VTE; a total below 4 classifies the patient as low risk. In the original validation cohort, symptomatic VTE occurred in roughly 11% of high-risk patients who received no prophylaxis, compared with about 0.3% of low-risk patients. High-risk classification is the trigger clinicians use to weigh pharmacologic or mechanical thromboprophylaxis against bleeding risk; it is not itself a treatment order.

When to consult a professional

This tool performs the standard Padua point arithmetic for education and documentation. It does not diagnose VTE, does not weigh bleeding risk, and does not prescribe prophylaxis. Any decision about anticoagulation or mechanical prophylaxis should be made by the treating clinician, who can weigh the score alongside bleeding risk, renal function, and the full clinical picture.

Frequently Asked Questions

What is the Padua Prediction Score?
The Padua Prediction Score is a validated risk-assessment model for venous thromboembolism (VTE) in hospitalized, non-surgical medical patients. It sums points across 11 clinical risk factors, such as active cancer, prior VTE, reduced mobility, and known thrombophilia, to a total ranging from 0 to 20 points. A total of 4 or more points identifies a patient as high risk for VTE during the hospital stay.
How is the Padua score calculated?
Each risk factor present adds a fixed number of points: active cancer, previous VTE, reduced mobility, and known thrombophilia each add 3 points; recent trauma or surgery adds 2 points; age 70 or over, heart or respiratory failure, recent myocardial infarction or ischemic stroke, acute infection or rheumatologic disorder, obesity (BMI 30 or higher), and ongoing hormonal treatment each add 1 point. Add every present factor's points for the total score.
What does a Padua score of 4 or more mean?
A score of 4 or higher classifies the patient as high risk for venous thromboembolism, a group in which pharmacologic thromboprophylaxis is generally considered in the absence of a bleeding contraindication. A score below 4 classifies the patient as low risk, where routine anticoagulant prophylaxis is typically not recommended. This tool performs the scoring arithmetic only; the prophylaxis decision belongs to the treating clinician.

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