Outcomes of Postpartum Preeclampsia: A Retrospective Cohort Study of 1.3 Million Pregnancies

( BJOG . 2025;132:752–759. doi: 10.1111/1471-0528.18030) Preeclampsia (PEC) is recognized as a major contributor to maternal and neonatal illness worldwide, typically manifesting during pregnancy through new-onset hypertension and related complications (proteinuria, end-organ and/or uteroplacental dysfunction) after 20 weeks of gestation. While antepartum PEC has been extensively studied, considerably less is known about cases that appear after childbirth. Although postpartum preeclampsia (PPPEC) is thought to originate from antenatal physiological changes, its consequences for mothers and infants have not been fully established. To address this gap, researchers conducted an extensive retrospective cohort study involving over 1.3 million hospital births in Quebec, Canada between 2006 and 2022.