Review pregnancy and postpartum VTE risk factors in a structured checklist that keeps stage and BMI context visible for educational use.
Venous thromboembolism (VTE) — including deep vein thrombosis and pulmonary embolism — is a pregnancy and postpartum safety concern. Pregnancy increases clotting risk through hypercoagulability, venous stasis, and delivery-related endothelial injury, with the postpartum window carrying the highest short-term risk.
This page brings commonly cited pregnancy and postpartum VTE factors into one checklist so users can see which categories apply at the current stage. The result is best read as an educational factor-review tool, not as a validated patient-specific probability model or a direct prescribing rule.
Risk assessment should be revisited if circumstances change during pregnancy and again after delivery. The postpartum period usually carries the highest short-term risk, which is why stage context matters. This calculator can help organize that discussion, but local obstetric guidance and clinician judgment still take precedence over the checklist.
This page is useful when you want one place to review pregnancy and postpartum VTE factors without turning them into a fake precision score. Its main value is educational: it helps users organize history, pregnancy, delivery, and postpartum context before comparing that checklist with the obstetric pathway used in practice.
This page does not calculate a validated individualized VTE probability. Checklist summary = selected factors + stage context + BMI context. Use the output to organize factor review, not as a bedside treatment plan or formal obstetric risk score.
Result: 3 selected factors, 3 categories touched, postpartum context
This example includes previous VTE, caesarean delivery, and an auto-added BMI item when obesity is present. The page is summarizing the factor mix and stage context, not producing an individualized absolute-risk estimate.
This page organizes common pregnancy and postpartum VTE factors into one checklist. That makes it easier to see which categories apply and whether the current stage changes the discussion, but it does not create a validated individualized probability.
Pregnancy risk is not static. Antenatal risk changes across gestation, and the postpartum window is usually the highest-risk period. The stage table on the page is there to keep that context visible without pretending the page can replace a formal obstetric pathway.
Formal obstetric VTE pathways depend on the actual guideline being followed, bleeding risk, delivery planning, prior anticoagulant history, and the rest of the obstetric picture. Use the output to structure factor review, not as a stand-alone care pathway.
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This page does not claim to produce a validated individualized thrombosis probability. It groups commonly cited antenatal and postpartum VTE risk factors into a checklist, adds pregnancy-stage context, and shows BMI context when height and weight are provided. The goal is to make the factor review visible in one place before the user compares it with the actual obstetric pathway used in practice.
Formal pregnancy VTE pathways are guideline-specific and usually depend on a structured point-based review, bleeding considerations, delivery planning, thrombophilia status, and prior anticoagulant history. The worksheet therefore stays at checklist level and deliberately avoids turning the result into a prescribing threshold.
The baseline risk is approximately 1–2 per 1,000 pregnancies, which is 4–5 times higher than in non-pregnant women of the same age. Risk is highest in the postpartum period, particularly the first 6 weeks after delivery.
Virchow's triad describes the main drivers of clot risk: hypercoagulability, venous stasis, and endothelial injury. Pregnancy and the postpartum period can affect all three, which is why timing and delivery details matter when you interpret the worksheet.
Per RCOG Green-top Guideline 37a, assess at booking, at each admission, during significant illness or immobilization, following delivery, and whenever risk factors change. Many institutions also assess each trimester.
Formal obstetric pathways usually use point-based rules or guideline-specific assessment frameworks rather than a single universal probability model. This page therefore stays at checklist level so it can organize factor review without pretending to deliver a validated individualized absolute-risk estimate.
Medication choice in pregnancy is more complex than this worksheet can represent. The page keeps the focus on risk-context comparison rather than on anticoagulant selection, dose, or duration.
RCOG and similar obstetric pathways usually use point-based risk assessment and full clinical review rather than the simplified checklist shown here. This page is therefore better used for educational factor review than as a substitute for the actual obstetric guideline used in practice.
Testing depends on the patient history, the type of prior event, family history, and the guideline being followed. This page does not try to turn that decision into a stand-alone testing rule.