Chart — Maternal-Newborn
Placenta Previa vs Abruptio Placentae Chart
Two causes of late-pregnancy bleeding, one defining contrast: previa bleeds painlessly bright; abruption bleeds painfully dark — or not visibly at all. And for both, the same rule until proven otherwise: no fingers, no speculum games, ultrasound first.
Educational use only. Antepartum bleeding is an emergency evaluated by the provider team — this chart supports recognition and the exam precautions. This material supports nursing education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional policy, or medical direction. Always follow facility protocols and current provider orders.
Side-by-Side Comparison
| Feature | Placenta Previa | Abruptio Placentae |
|---|---|---|
| What it is | Placenta implants over or near the cervical os | Placenta separates from the uterine wall before delivery |
| Bleeding | Painless, bright red — often sudden, may stop and recur | Painful; dark red — may be concealed behind the placenta with little or no visible blood |
| Uterus | Soft, non-tender; normal tone between contractions | Tender, rigid, board-like; may contract relentlessly (high-frequency, low-amplitude) |
| Pain | Classically absent | Classically present — abdominal/back pain, sudden onset |
| Fetal status | Often initially reassuring; risk rises with maternal loss | Frequently non-reassuring early — the placenta is detaching from its blood supply |
| Classic risk factors | Prior cesarean or uterine surgery, prior previa, multiparity, advanced maternal age, smoking | Hypertension/preeclampsia, trauma, cocaine use, smoking, prior abruption, sudden uterine decompression |
| Diagnosis | Ultrasound placental location (often found on routine anatomy scan) | Clinical — ultrasound can miss it; the picture is the diagnosis |
| The exam rule | NO digital vaginal exams — a finger through a previa causes hemorrhage | Same caution until previa is excluded by ultrasound |
| Management direction | Pelvic rest; monitor; cesarean delivery — timing by stability and gestational age | Stabilize, continuous monitoring, expedite delivery if significant; anticipate DIC and hemorrhage |
Nursing Priorities for Any Antepartum Bleed
• No digital vaginal exam until placental location is confirmed — the most tested rule in obstetric nursing
• Continuous fetal monitoring and maternal vitals; side-lying position
• IV access, labs with type and screen/crossmatch, quantify visible loss
• With abruption: watch for DIC (oozing, falling fibrinogen) and remember concealed bleeding — vitals can outrun the pad
• Kleihauer-Betke and RhoGAM considerations for Rh-negative patients per provider
Related Resources
Standards & sources
Fact-checked Jun 20, 2026This page is written to align with American College of Obstetricians and Gynecologists (ACOG) · AWHONN · American Academy of Pediatrics (AAP) — newborn. It is an educational summary, not a citation of any single document — always verify specific doses, values, and protocols against current guidelines and your facility policy. How we source content →