V T E Pregnancy Risk
Young healthy primigravida with no risk factors
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Evidence-based calculations Used in clinical settings worldwide Regular monitoring recommended
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✅ Low Risk Pregnancy
Young healthy primigravida with no risk factors
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🟡 Moderate Risk - Obesity
Obese multigravida with varicose veins
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🔴 High Risk - Prior VTE
History of DVT with known thrombophilia
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🏥 Post-Cesarean Delivery
Emergency cesarean with multiple risk factors
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👶👶 IVF Twin Pregnancy
ART pregnancy with twins and OHSS history
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✈️ Frequent Traveler
Long-haul travel during pregnancy
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🤢 Severe Hyperemesis
Hospitalized for hyperemesis gravidarum
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⚠️ Antiphospholipid Syndrome
Known APS requiring anticoagulation
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Demographics
High-Risk Factors
Obstetric Factors
Other Factors
Total Score
0 risk factors
Risk Category
VTE risk: < 0.5%
Absolute Risk
Prophylaxis
None routinely required; reassess if risk factors ...
Duration
N/A - general prevention measures
Recommendation
Routine thromboprophylaxis not required. Mobilization and hydration recommended.
Risk Score Gauge
Risk Factor Categories
Risk Timeline
Risk Comparison
DVT Warning Signs
PE Warning Signs (EMERGENCY)
Prevention Strategies
Important Medical Disclaimer
This calculator is for educational purposes only and should not replace professional medical advice. VTE risk assessment and thromboprophylaxis decisions should be made by your healthcare provider based on your complete medical history. If you experience any warning signs of DVT or PE, seek immediate medical attention.
Note: Pregnancy increases VTE risk 4-5 fold. Risk continues for 6-12 weeks postpartum. Always follow your provider's thromboprophylaxis recommendations.
For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
🏥 Health Facts
— WHO
— CDC
What is VTE (Venous Thromboembolism) in Pregnancy?
Venous thromboembolism (VTE) encompasses deep vein thrombosis (DVT) and pulmonary embolism (PE). Pregnancy increases VTE risk 5-10 fold due to Virchow's triad: hypercoagulability, venous stasis, and vascular injury. VTE remains a leading cause of maternal mortality in developed countries.
Deep Vein Thrombosis (DVT)
Blood clot in a deep vein, usually in the leg. Can break loose and travel to the lungs causing PE.
Pulmonary Embolism (PE)
Life-threatening condition where clot blocks arteries in the lung. Medical emergency requiring immediate treatment.
RCOG Risk Assessment
Uses Royal College of Obstetricians & Gynaecologists guidelines for systematic risk stratification.
Thrombophilia and VTE Risk
| Condition | General VTE Risk Increase | Pregnancy VTE Risk |
| Factor V Leiden (Heterozygous) | 3-8x | 1-3% |
| Factor V Leiden (Homozygous) | 50-80x | 10-15% |
| Prothrombin G20210A (Heterozygous) | 2-5x | 1-2% |
| Antithrombin Deficiency | 25-50x | 3-7% |
| Protein C Deficiency | 10-15x | 2-5% |
| Protein S Deficiency | 10-15x | 2-5% |
| Antiphospholipid Syndrome | 5-9x | 5-12% |
When to Assess VTE Risk
Booking Visit
First prenatal appointment to establish baseline risk and plan monitoring.
Hospital Admission
Any admission during pregnancy (hyperemesis, preterm labor, etc.).
Post-Delivery
Postpartum period is highest risk. Reassess after cesarean or complications.
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