Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/1/2025

Pulmonary Embolism Risk Associated with Oral Contraceptives

Risk Stratification

  • Combined oral contraceptives are associated with a 2-6 fold increase in venous thromboembolism (VTE) risk over baseline, according to the European Respiratory Journal guidelines 1
  • Third-generation combined oral contraceptives carry a higher VTE risk than second-generation contraceptives, as reported by the European Respiratory Journal 1
  • Severe inherited thrombophilia increases the risk of fatal outcomes from oral contraceptive-associated pulmonary embolism, as noted by the European Respiratory Journal 1

Clinical Implications

  • Hormone-releasing intrauterine devices and some progesterone-only pills are not associated with significant increases in VTE risk and may be safer alternatives, as suggested by the European Respiratory Journal 1
  • Women who develop hormone-associated pulmonary embolism or deep vein thrombosis are generally advised to discontinue oral contraceptive use, according to the Journal of Thrombosis and Haemostasis guidelines 2
  • Anticoagulant therapy for 3 months is typically sufficient for women with hormone-associated VTE if the hormone therapy is stopped at diagnosis, as recommended by the Journal of Thrombosis and Haemostasis 3
  • Women should discontinue hormonal therapy before stopping anticoagulant therapy, as advised by the Journal of Thrombosis and Haemostasis 3