163. Cardio-Obstetrics: Pregnancy and Anticoagulation with Dr. Katie Berlacher

Published: Nov. 25, 2021, 5:02 a.m.

Pregnancy is a hypercoagulable state associated with increased risk of thromboembolism. Managing anticoagulation during pregnancy has implications for both the mother and the fetus. CardioNerd\xa0Amit Goyal\xa0joins Dr. Akanksha Agrawal (Cardiology Fellow at Emory University), Dr. Natalie Stokes (Cardiology Fellow at UPMC and Co-Chair of the Cardionerds Cardio-Ob series), and Dr. Katie Berlacher (Program Director of the Cardiovascular Disease Fellowship and Director of the Women\u2019s Heart Program at UPMC) as they discuss the common indications for anticoagulation and their management before, during, and after pregnancy. In this episode, we focus on management of pregnant patients with mechanical valves and venous thromboembolism.\n\n\n\nAudio editing by\xa0CardioNerds Academy Intern,\xa0Dr. Maryam Barkhordarian.\n\n\n\nPearls \u2022 Notes \u2022 References \u2022 Guest Profiles \u2022 Production Team\n\n\n\n\n\n\n\n\n\nCardioNerds Cardio-Obstetrics Series PageCardioNerds Episode PageCardioNerds AcademyCardionerds Healy Honor Roll\n\n\n\n\n\nCardioNerds Journal ClubSubscribe to The Heartbeat Newsletter!Check out CardioNerds SWAG!Become a CardioNerds Patron!\n\n\n\n\n\n\n\n\n\nPearls- Pregnancy and Anticoagulation\n\n\n\nPregnancy is a hypercoagulable state. Pregnancy-associated VTE is a leading cause of maternal morbidity and mortality.The use of anticoagulation requires a balance between the risks and benefits to the mother and her fetus.The agent of choice for anticoagulation during pregnancy depends on the indication, pre-pregnancy dose of vitamin K antagonist (VKA), and the trimester of pregnancy. For instance, patients with mechanical heart valves, warfarin is generally recommended in the first trimester if the daily dose is less than 5 mg and as the first option for all patients with mechanical valves in the 2nd and 3rd trimester. Use of direct oral anticoagulants (DOACs) has not been systematically studied, they do cross the placenta and their safety remains untested.Warfarin crosses the placenta but is not found in breast milk. LMWH does not cross the placenta and is not found in breast milk. Thus, both these agents can be used by a lactating mother.\n\n\n\nQuatables - Pregnancy and Anticoagulation\n\n\n\n\u201c[We] can\u2019t highlight enough that good communication and documentation is vital in such situations\u201d says Dr. Berlacher while discussing the role of a multidisciplinary team including cardiologists, obstetricians and fetal medicine physicians in taking care of a pregnant patient on anticoagulation.\n\n\n\n\u201cWhat I love about cardio-obstetrics is that we really can help women in a time that is so important in their life\u2026this is one of the most memorable times in their life..\u201d says Dr. Berlacher when asked what makes your heart flutter about cardio-obstetrics.\n\n\n\n\u201cKnowledge is power...not just for providers, but also for the patients\u201d says Dr. Berlacher emphasizing the importance of clear communication between physicians and patients.\n\n\n\nShow notes - Pregnancy and Anticoagulation\n\n\n\n1. What makes pregnancy a hypercoagulable state?\n\n\n\nPregnancy is a hypercoagulable state associated with higher risk of thromboembolic phenomenon. The three components of Virchow\u2019s triad: hypercoagulability, stasis, and endothelial injury are all present during pregnancy. This leads to a 5-fold increased risk of venous thromboembolism (VTE) during pregnancy that persists for 12 weeks postpartum. The risk for VTE seems to be highest in the first 6 weeks postpartum, with a higher prevalence of clot in the left lower extremity.There are additional risk factors for developing VTE in the postpartum period besides pregnancy itself, and this includes but is not limited to preeclampsia, emergent c-section, hypertension, smoking, and postpartum infection.Choosing anticoagulant therapies during pregnancy involves a fine balance between the risks and benefits to both the mother and fetus. A multidisciplinary team involving the obstetrician, cardiologist, and maternal-fetal medicine team is critical to guide anticoagulation in pregnanc...