This study is a prospective cohort study, led by Prof. Zhao Yangyu, from the Department of Gynecology \& Obstetrics, Peking University Third Hospital.
Age range
20 Years – 49 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Incidence of blood loss
Timeframe: delivery
Incidence of postpartum hemorrhage
Timeframe: delivery
Incidence of maternal transfusion
Timeframe: delivery
Incidence of spontaneous abortion
Timeframe: delivery
Incidence of stillbirth
Timeframe: delivery
Incidence of perinatal death
Timeframe: 42 days postpartum