Obstetric hemorrhage principles
Read the topic background here, then explore the labeled visual and structured learning explanations on this page.
Read explanation on this page ↓ See diagram ↓Obstetrical bleeding — on-site reading
This reference extract addresses Obstetrical bleeding, a related subject. It does not cover every part of Obstetric hemorrhage principles.. The article introduction is reproduced here, so you do not need to leave MedAtlas to read it. It may not match the latest official medical guidance.
Obstetrical bleeding is bleeding in pregnancy that occurs before, during, or after childbirth. Bleeding before childbirth is that which occurs after 24 weeks of pregnancy. Bleeding may be vaginal or, less commonly, into the abdominal cavity. Bleeding that occurs before 24 weeks is known as early pregnancy bleeding.
Causes of bleeding before and during childbirth include cervicitis, placenta previa, placental abruption and uterine rupture. Causes of bleeding after childbirth include poor contraction of the uterus, retained products of conception, and bleeding disorders.
About 8.7 million cases of severe maternal bleeding occurred in 2015 resulting in 83,000 deaths. Between 2003 and 2009, bleeding accounted for 27% of maternal deaths globally.
How this connects to Obstetrics and Gynaecology
Reproductive medicine integrates anatomy, gonadal and pituitary endocrine signaling, tissue responses and age- or gestation-dependent physiology. Pregnancy adds placental circulation and changing maternal reference ranges, so outcomes and laboratory results must be interpreted in the correct developmental context.
Text credit: Wikipedia contributors, “Obstetrical bleeding”, original article · authors & revision history · CC BY-SA 4.0. Unmodified opening extract, accessed 24 September 2026. This Wikipedia-derived section is provided under CC BY-SA 4.0; the independent MedAtlas notes and design are separate works.
Obstetric hemorrhage principles · visual study map
Scalable vector illustration. Labeled conceptual map, not a precise anatomical, histological or diagnostic image.The wording in this learning map is adapted from the attributed Wikipedia background section below (CC BY-SA 4.0).
What the underlying subject studies
Obstetrics and gynaecology integrate reproductive anatomy, hormonal physiology, pregnancy adaptation and conditions affecting the reproductive system. Gestational age and the distinction between maternal, placental and fetal compartments are fundamental in pregnancy topics.
How mechanisms and evidence connect
The hypothalamic–pituitary–ovarian axis and endometrial changes explain menstrual and many reproductive processes. Pregnancy requires interpreting tests and symptoms in a time-dependent physiological context.
How to develop a sound explanation
Organize each topic as normal structure or cycle, mechanism of change, common presentations and principles of safe assessment. Care decisions require current obstetric guidance, patient preferences and specialist oversight.
References and verification (optional)
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NMC official CBME Curriculum 2024 and current regulations index ↗