“…12 In this study, we included a cohort of patients who were identified as at >1:100 risk of developing PE before 34 weeks of pregnancy. This is not surprising because approximately 30% of pregnant women are resistant to aspirin therapy, and the prevalence of non-responsiveness increase with the week of pregnancy, as shown by Caron et al 34 Our results are comparable to the results of the ASPRE-trial, in which PE was not prevented by aspirin in 18% of high-risk patients. 33 In our study, 25% of women at high risk of PE developed PE later in the pregnancy, despite taking aspirin.…”