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ACOG Practice Bulletin No. 197 Summary: Inherited Thrombophilias in Pregnancy
Insights
Inherited thrombophilias increase venous thromboembolism risk in pregnancy. This revised guidance reviews screening, management, and prophylaxis for these conditions during pregnancy and postpartum.
Area of Science:
- Obstetrics and Gynecology
- Hematology
- Reproductive Medicine
Background:
- Inherited thrombophilias are genetic conditions increasing the risk of blood clots.
- These conditions are linked to adverse pregnancy outcomes and venous thromboembolism (VTE).
- Current evidence guiding screening and management of thrombophilia in pregnancy is limited.
Purpose of the Study:
- To review common inherited thrombophilias and their association with maternal VTE risk.
- To discuss adverse pregnancy outcomes linked to thrombophilia.
- To provide updated guidance on screening indications and management options during pregnancy.
Main Methods:
- Literature review of inherited thrombophilias and pregnancy outcomes.
- Analysis of current evidence on screening and management strategies.
- Incorporation of updated consensus guidelines on thromboprophylaxis.
Main Results:
- Inherited thrombophilias significantly elevate the risk of VTE in pregnant individuals.
- Specific thrombophilias are associated with increased rates of adverse pregnancy outcomes.
- Updated guidelines address prophylaxis needs during pregnancy and postpartum periods.
Conclusions:
- Screening and management of inherited thrombophilias in pregnancy require careful consideration.
- Prophylaxis decisions should be individualized based on risk assessment.
- New guidelines offer critical insights for obstetric anesthesia and perinatology regarding thromboprophylaxis.
Abstract:
Inherited thrombophilias are associated with an increased risk of venous thromboembolism and have been linked to adverse outcomes in pregnancy. However, there is limited evidence to guide screening for and management of these conditions in pregnancy. The purpose of this document is to review common thrombophilias and their association with maternal venous thromboembolism risk and adverse pregnancy outcomes, indications for screening to detect these conditions, and management options in pregnancy. This Practice Bulletin has been revised to provide additional information on recommendations for candidates for thrombophilia evaluation, updated consensus guidelines regarding the need for prophylaxis in women with an inherited thrombophilia during pregnancy and the postpartum period, and discussion of new published consensus guidelines from the Society for Obstetric Anesthesia and Perinatology addressing thromboprophylaxis and neuraxial anesthetic considerations in the obstetric population.
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