Placenta praevia — Essential obstetric and newborn care — MSF Essential obstetric and newborn care — Médecins Sans Frontières 2026

MSFClinical guideline (chapter)Current edition

From Essential obstetric and newborn care › Chapter 3: Bleeding during the second half of pregnancy · Médecins Sans Frontières, Current online edition, 2026

MSF guidance on diagnosis and management of placenta praevia for clinicians in resource-limited settings.

In one sentencePlacenta praevia requires ultrasound diagnosis, avoidance of vaginal examination except in theatre, caesarean delivery for complete/partial types, prolongation to 34+ weeks when stable, and preparedness for postpartum haemorrhage.

Issuer: Médecins Sans Frontières
Edition: Current online edition, 2026
Audience: Clinicians providing obstetric care, particularly in humanitarian and resource-limited settings
Evidence: Expert consensus based on MSF operational experience
Reviewed: 23 Oct 2026 · GMJ

Read the original on MSF Whole guideline (PDF)

Summary by GMJ Guidelines Desk•Reviewed by Prof. Giorgi Pkhakadze, MD, MPH, PhD•Record updated 23 Oct 2026•Next check Apr 2027

What this guideline says

GMJ summary

This section of the MSF Essential Obstetric and Newborn Care guideline addresses placenta praevia, defined as abnormal implantation of the placenta in the lower uterine segment. The guideline describes four types (complete, partial, marginal, and lateral), emphasising that complete and partial types preclude vaginal delivery. Primary risk factors identified are multiparity and history of caesarean section.

Diagnosis is based on sudden bright red bleeding after 22 weeks LMP, with ultrasound as the method of choice to avoid triggering massive haemorrhage through vaginal examination. If ultrasound is unavailable, digital vaginal examination may be performed only in the operating room with immediate capacity for transfusion and emergency caesarean section.

Management is stratified by bleeding severity and labour status. For minor to moderate bleeding without labour, the guideline recommends rest, monitoring, and delaying delivery to at least 34 weeks LMP in complete or partial placenta praevia. Heavy bleeding or labour onset generally requires caesarean section, though vaginal delivery may be attempted in incomplete placenta praevia with minor bleeding. The guideline emphasises preparedness for postpartum haemorrhage due to poor retraction of the lower uterine segment.

Key points

For clinicians — doses and thresholds as stated in the guideline

Ultrasound is the diagnostic method of choice; digital vaginal examination should only be performed in the operating room with immediate capacity for transfusion and emergency caesarean section
Complete and partial placenta praevia preclude vaginal delivery; marginal and lateral types (>2 cm from internal os) may permit vaginal birth
For minor to moderate bleeding without labour, prolong pregnancy to at least 34 weeks LMP; consider foetal lung maturation with dexamethasone before 34 weeks
Perform caesarean section between 34–37 weeks LMP if recurrent bleeding occurs, or after 37 weeks following a single stopped episode
Insert IV line (16–18G catheter) with Ringer lactate; prepare for transfusion with screened blood (HIV-1, HIV-2, hepatitis B, hepatitis C, syphilis, malaria in endemic areas)
For heavy bleeding without labour, attempt tocolysis whilst preparing for caesarean section regardless of foetal viability
If labour starts with incomplete placenta praevia and minor bleeding, attempt vaginal delivery with early membrane rupture to compress placental vessels
Administer oxytocin routinely and be prepared for manual placenta removal due to high postpartum haemorrhage risk from poor lower uterine segment retraction

Types of placenta praevia and delivery implications

Table extracted from the guideline

Type	Definition	Vaginal delivery possible
Complete	Placenta completely covers internal cervical os	No
Partial	Placenta partially covers internal cervical os	No
Marginal	Placenta touches but does not overlap internal os	May be possible
Lateral	Placenta in lower segment but >2 cm from internal os	May be possible

Source: Médecins Sans Frontières, Placenta praevia — Essential obstetric and newborn care — MSF Essential obstetric and newborn care. Reproduced in summary form.

From the guideline

Verbatim

“Ultrasound is the method of choice for diagnosing placenta praevia. It makes it possible: To avoid a vaginal examination that may trigger massive haemorrhage.”

— Médecins Sans Frontières, Placenta praevia — Essential obstetric and newborn care — MSF Essential obstetric and newborn care, Section 3.1.2 (2026)

Editor’s perspective

Why this matters for Georgia and the region

Prof. Giorgi Pkhakadze, MD, MPH, PhD

Editor-in-Chief, Georgian Medical Journal · Chair, Public Health Institute of Georgia · WHO consultant, health and migration

As Editor-in-Chief of the Georgian Medical Journal and Chair of the Public Health Institute, I recognise that placenta praevia management is particularly relevant for Georgia, where caesarean section rates exceed 50% in some facilities—a key risk factor for placenta praevia in subsequent pregnancies. The MSF guidance on ultrasound-first diagnosis and stratified management by bleeding severity and labour status provides a practical framework adaptable to our mixed healthcare landscape. I would emphasise to Georgian clinicians the absolute requirement for operating-room readiness before any digital vaginal examination and the importance of early referral to CEmONC facilities for women diagnosed in primary care settings. The realistic implementation challenge in Georgia and the broader South Caucasus remains ensuring that rural facilities have both reliable ultrasound access and established protocols for timely transfer to surgical centres, particularly for women requiring prolonged hospitalisation between 34–37 weeks gestation.

ORCID 0000-0001-7609-4515 · Perspective written for the GMJ Guidelines Library, 23 Oct 2026

Applicability

Georgia and the South Caucasus

Placenta praevia management is highly relevant for Georgia and the South Caucasus, where caesarean section rates are high (contributing to increased risk in subsequent pregnancies) and where access to comprehensive emergency obstetric and newborn care (CEmONC) facilities varies significantly between urban and rural areas. National obstetric programmes would need to ensure ultrasound availability at antenatal care facilities to enable early diagnosis, establish clear referral pathways from primary facilities to CEmONC centres capable of providing blood transfusion and emergency surgery, and develop protocols for managing women in remote areas who may require prolonged hospitalisation near surgical facilities. Blood safety systems must reliably screen for transfusion-transmitted infections including HIV, hepatitis B and C, and syphilis, which aligns with Georgia’s established blood safety and hepatitis C elimination programmes.

Questions this guideline answers

Quick answers

When can I perform a digital vaginal examination if placenta praevia is suspected?

Only in the operating room with resources immediately available for massive haemorrhage management, including IV access, blood transfusion, and emergency caesarean section. Once diagnosis is established, never perform another digital vaginal examination.

At what gestational age should caesarean section be performed for placenta praevia?

Between 34–37 weeks if bleeding is recurrent despite attempts to prolong pregnancy, or after 37 weeks following a single episode of bleeding that has stopped. Before 34 weeks, consider foetal lung maturation with dexamethasone.

Can any woman with placenta praevia deliver vaginally?

Only if the placenta praevia is not complete (marginal or lateral) and bleeding is minor. If labour starts with these conditions, vaginal delivery may be attempted with early membrane rupture. Complete or partial placenta praevia always requires caesarean section.

What special precautions are needed for postpartum haemorrhage in placenta praevia?

Postpartum haemorrhage is common with all low-lying placentas due to weaker retraction of the lower uterine segment. Do not hesitate to remove the placenta manually, explore the uterine cavity, and administer oxytocin routinely.

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What this guideline says

Key points

Types of placenta praevia and delivery implications

From the guideline