Enter Assessment Details
The page uses a single main column, while the form itself shifts to three columns on large screens, two on medium screens, and one on mobile.
Formula Used
This calculator uses a weighted sum approach. Add the points for each active factor, then compare the total with the threshold.
Total Score = 3 × (active cancer + previous VTE + reduced mobility + known thrombophilia) + 2 × (recent trauma or surgery) + 1 × (age 70 or older + heart or respiratory failure + acute MI or ischemic stroke + acute infection or rheumatologic disorder + BMI over 30 + hormonal treatment).
| Risk factor | Points | How it is captured here |
|---|---|---|
| Active cancer | 3 | Manual checkbox |
| Previous VTE | 3 | Manual checkbox |
| Reduced mobility | 3 | Manual checkbox |
| Known thrombophilia | 3 | Manual checkbox |
| Recent trauma or surgery | 2 | Manual checkbox |
| Age 70 years or older | 1 | Automatic from age |
| Heart or respiratory failure | 1 | Manual checkbox |
| Acute MI or ischemic stroke | 1 | Manual checkbox |
| Acute infection or rheumatologic disorder | 1 | Manual checkbox |
| Obesity with BMI over 30 | 1 | Automatic from height and weight |
| Ongoing hormonal treatment | 1 | Manual checkbox |
| High-risk threshold | 4 or more | Interpretation rule |
How to Use This Calculator
Enter patient identifiers, age, height, and weight first.
Select the relevant clinical factors that are present now.
Submit the form to show the result above the form.
Review the total score, category, automatic checks, and factor table.
Export the result to CSV for spreadsheets or PDF for reports.
Use the example table below to verify how the scoring logic behaves across different inpatient profiles.
Example Data Table
These are fictional examples for testing and demonstration.
| Case | Age | BMI | Selected drivers | Total score | Category |
|---|---|---|---|---|---|
| A | 74 | 31.2 | Active cancer, reduced mobility, acute infection, age rule, BMI rule | 9 | High Risk |
| B | 58 | 27.4 | Recent surgery, hormonal treatment | 3 | Low Risk |
| C | 71 | 33.5 | Previous VTE, reduced mobility, heart failure, age rule, BMI rule | 9 | High Risk |
Frequently Asked Questions
1. What does this score estimate?
It estimates venous thrombosis risk in hospitalized medical patients by summing weighted clinical factors. It is a structured screening aid, not a diagnosis or treatment order.
2. Who should use this calculator?
Clinicians, students, auditors, and care teams can use it for documentation and education. It is less suitable for outpatient self-assessment or specialty cases needing another validated model.
3. Why are age and BMI applied automatically?
Automatic scoring reduces data-entry mistakes. Age 70 or older adds one point, and BMI above 30 adds one point after height and weight are processed.
4. What counts as reduced mobility?
Use it when the patient is largely confined to bed or chair and walking is minimal for a sustained period during admission.
5. Does a low score rule out thrombosis?
No. A low score lowers baseline concern but does not exclude an existing clot, evolving symptoms, or a rapid change in risk profile.
6. Can this be used for pregnancy or surgery pathways?
Not as a primary decision tool. Pregnancy, postoperative care, trauma services, and specialty oncology settings often use different validated assessment frameworks.
7. Why are CSV and PDF exports useful?
Exports support chart review, audit trails, teaching, handoffs, and quality projects. They also make repeated assessments easier to compare over time.
8. What should happen after a high-risk result?
A high score should trigger clinician review with bleeding risk, contraindications, symptoms, and local prophylaxis protocols before any management choice.
Important Note
This page is designed for educational support, documentation practice, and structured review.
It should not replace clinician judgment, full history, examination, imaging, or institutional policy.