Dr. Alicia Power and Dr. Michelle Morais, Assistant Professor in the Department of Obstetrics and Gynecology, and Maternal-Fetal Medicine specialist at McMaster University Medical Centre, discuss aspirin in pregnancy - how it affects the placenta, who we should be considering recommending it to, how to estimate risk and have conversations with patients around it, specific ways of taking aspirin, and any concerns around delivery for the delivering person or baby who may be still on aspirin. Resources: The Fetal Medicine Foundation Assessment of Risk for Preeclampsia (PE): This application uses Bayes theorem to combine the prior risk from maternal factors and medical history with the results of various biophysical and biochemical measurements to estimate the posterior risk for PE.  Feedback: Please take a moment to fill out this very short anonymous survey (>1 minute). We want to optimize Pregnancy for Professionals to suit your needs, so any feedback is very valuable and much appreciated!