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OverviewAetiologyPathophysiologyClinical features and red flagsInvestigationsDifferential diagnosisManagementComplicationsMonitoring and follow-upSpecial situationsCommon pitfallsQuestionsSources
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Educational draft · awaiting clinical reviewThe full textbook explains uncertainty but does not replace live national or local guidance, specialist advice, or current prescribing information.

Breech presentation and external cephalic version

Obstetrics and gynaecology · UK scope · Sources checked 7 Sept 2026 · Clinical review pending

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Fetal concern after version or in breech labour

Persistent fetal bradycardia, significant bleeding or severe abdominal pain during or after external cephalic version requires immediate assessment. Breech labour with ruptured membranes also increases concern for cord prolapse.

Action: Stop the manipulation, call senior obstetric help, assess maternal condition and the fetal heart, and prepare urgent birth when compromise persists. If a breech baby is already being born, summon an experienced breech practitioner and neonatal team immediately.

Overview

Recognise persistent breech presentation, assess suitability for external cephalic version and explain safe birth options when the baby remains bottom or feet first.

In breech presentation the buttocks or feet lie nearest the cervix. Most fetuses change position spontaneously before term, so a breech finding at the anomaly scan does not predict the final route of birth. Persistent breech later in pregnancy calls for confirmation and planning because the order in which the baby emerges changes the mechanics and risks of vaginal birth. The body may pass before the largest and least compressible part, the head, while the cord can become compressed before birth is complete.

External cephalic version, or ECV, is an attempt by a trained practitioner to turn the fetus through the maternal abdomen into a head-first position. It offers a chance of cephalic birth and can reduce the need for caesarean surgery, but it does not guarantee a vaginal outcome. Some people decline because of discomfort or preference for a different birth plan. Others cannot safely undergo the procedure because of fetal, placental or maternal findings. Explain the assessment, expected discomfort, possibility of stopping, likelihood of success and uncommon need for urgent surgery before obtaining consent.

Key points

Practice

Two practice questions

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Question 1 of 2
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Obstetrics and gynaecologyOriginal SBA

Assess an ECV candidate

Five women with singleton breech pregnancies attend at 37 weeks wishing to discuss ECV. Their general observations are stable. Which finding, considered on its own, is compatible with offering ECV after appropriate individual assessment?

Choose one answer, then submit
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Sources and review status5 sources · checked 7 Sept 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 7 Sept 2026; clinical approval remains outstanding.

  • RCOG Green-top 20a External cephalic version
  • RCOG Breech baby at the end of pregnancy
  • NICE NG192 Breech presentation and caesarean birth
  • D-Gam anti-D immunoglobulin Summary of Product Characteristics
  • RCOG Green-top 20b Management of breech presentation

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateComplete draftClinical stateAwaiting reviewJurisdictionUnited Kingdom
  • Breech presentation is common earlier in pregnancy, but only about 3–4% of babies remain breech near term.
  • Confirm suspected breech by ultrasound and assess presentation subtype, fetal growth, head attitude, fluid and placental position.
  • Discuss external cephalic version, planned caesarean birth and appropriately selected vaginal breech birth as relevant options.
  • NICE offers ECV after 36+0 weeks for uncomplicated singleton breech; RCOG usually offers it from 37 weeks, or from 36 weeks in nulliparous women.
  • ECV succeeds in around half of attempts and should take place where fetal monitoring and emergency caesarean birth are available.
  • Assess the fetal heart before and after ECV and offer indicated anti-D with fetomaternal haemorrhage testing after the procedure.
  • A previous single caesarean is not by itself an absolute contraindication to ECV, although birth planning still requires scar assessment.

Aetiology

01

Persistence of a common fetal position

Many fetuses occupy a breech position earlier in pregnancy. Most turn before term, but some remain breech without an identifiable abnormality, especially in a first pregnancy.

02

Restricted or altered intrauterine movement

Unusual uterine shape, a low placenta, abnormal amniotic fluid volume or multiple pregnancy can affect fetal movement and orientation. These associations guide assessment without implying that every breech fetus has disease.

03

Fetal factors

Prematurity contributes because spontaneous turning has had less time to occur. Some fetal abnormalities can also affect position, so persistent breech is interpreted alongside growth and the antenatal structural assessment.

Pathophysiology

  1. 1
    Buttocks or feet presenting

    A frank breech has flexed hips and extended knees; a complete breech has flexed hips and knees. In footling breech, one or both feet lie below the buttocks.

  2. 2
    Cord exposure during descent

    A presenting part that does not closely fill the pelvic inlet can allow the cord to descend after membrane rupture. Compression can then impair oxygen delivery before the baby is born.

  3. 3
    The aftercoming head

    The head follows the trunk during a vaginal breech birth and may encounter an incompletely dilated cervix or unfavourable position. Delay at this stage can prolong cord compression and compromise oxygenation.

Clinical features and red flags

Suspect breech on examination

A firm rounded head may be palpable in the fundus while a softer irregular presenting pole lies above the pelvis. The location of the fetal heart can support suspicion but does not establish presentation. Arrange ultrasound rather than making an irreversible birth decision from palpation alone.

Confirm the relevant fetal features

Ultrasound identifies breech type, head attitude, fetal size and growth, fluid volume and placental position. Review known structural concerns. A hyperextended neck, growth restriction or a markedly large fetus may materially change counselling about a vaginal breech birth.

Check eligibility for version

Do not perform routine ECV when another indication already requires caesarean, such as placenta praevia covering the os. Recent bleeding, abnormal CTG, ruptured membranes and multiple pregnancy are usual exclusions. Severe pre-eclampsia or abnormal fetal Dopplers are additional concerns; lesser hypertension or oligohydramnios requires particular caution.

Distinguish assessment from guaranteed suitability

A single previous caesarean does not automatically exclude ECV, but the prior operation and the intended birth plan still need review. Similarly, an apparently suitable frank breech is not sufficient to promise vaginal birth; patient preference, trained staff, fetal findings and progress all remain relevant.

Red flags requiring action

  • Persistent bradycardia after an ECV attempt may require emergency caesarean birth; do not discharge before fetal wellbeing has been reassessed.
  • Fresh significant bleeding, sustained abdominal pain, contractions or reduced movements after ECV require prompt maternity assessment.
  • Ruptured membranes with a high or footling presenting part increases cord prolapse risk and warrants urgent assessment if fetal abnormalities occur.
  • An unexpected breech with advanced labour requires immediate experienced help and a decision based on how imminent birth is.

Investigations

  1. 01
    Ultrasound before ECVFirst step
    Why
    Confirm current presentation and identify factors influencing the procedure's safety and success.
    Interpretation and limitations
    Document placental location, fluid, fetal size and head position. If the fetus has already become cephalic, no version is needed. A finding that independently requires caesarean changes the value and suitability of attempting to turn the fetus.
  2. 02
    Fetal heart monitoring around the procedure
    Why
    Establish reassuring fetal status and identify persistent changes associated with manipulation.
    Interpretation and limitations
    Assess fetal wellbeing before the attempt and monitor after it using the maternity protocol. A brief change may resolve when manipulation stops, but prolonged or recurrent abnormalities require obstetric assessment and possibly urgent birth rather than routine discharge.
  3. 03
    Maternal observations and clinical review
    Why
    Identify maternal contraindications and monitor the response to any uterine-relaxing medicine.
    Interpretation and limitations
    Check pulse, blood pressure, symptoms, cardiac history and relevant medicines before tocolysis. Significant cardiac disease or hypertension may preclude a betamimetic; palpitations after an injection should be assessed with the overall clinical picture.
  4. 04
    RhD status and fetomaternal haemorrhage testing
    Why
    Identify the need for anti-D and determine whether additional prophylaxis is required.
    Interpretation and limitations
    For a non-sensitised RhD-negative patient, offer event-related anti-D following ECV and obtain an appropriate FMH sample, regardless of whether turning succeeded. The transfusion laboratory determines any extra dose; routine antenatal prophylaxis does not automatically cover a new sensitising event.

Differential diagnosis

01

Cephalic presentation

Abdominal palpation may mistake the fetal buttocks for the head, particularly when examination is difficult. Ultrasound establishes which pole is nearest the cervix before management decisions are made.

02

Transverse or oblique lie

The fetal long axis may lie across or diagonally within the uterus rather than longitudinally. This requires a distinct assessment because persistent transverse lie cannot progress through a routine vaginal birth.

03

Compound presentation

A limb may accompany another presenting part rather than represent a true footling breech. Careful examination and ultrasound clarify the anatomy and help avoid an inappropriate assumption about the route of birth.

Management

01Antenatal assessmentConfirm breech and discuss the available choicesFirst stepA fetus remains or is suspected to be breech around 36 weeks of pregnancy.+
  1. 1Arrange ultrasound confirmation and review the current pregnancy, previous surgery, fetal wellbeing and any independent reason for caesarean birth.
  2. 2Discuss ECV with its approximate 50% success rate, discomfort, chance of failure and uncommon complications, alongside the alternatives if breech persists.
  3. 3Arrange an appropriate appointment: NICE offers ECV after 36+0 weeks, while RCOG specifies from 37+0 weeks with the option from 36+0 weeks in nulliparous women.
  4. 4Record the person's preference and an interim plan for labour, bleeding, ruptured membranes or reduced movements before the appointment.
02Version appointmentPerform a monitored and consented attemptThe patient wishes to proceed and assessment finds no contraindication to ECV.+
  1. 1Reconfirm presentation and fetal wellbeing, check maternal observations and explain that the procedure will stop for pain, withdrawal of consent or clinical concern.
  2. 2Use a trained operator in a setting with emergency caesarean facilities; offer appropriate betamimetic tocolysis when suitable to improve the chance of turning.
  3. 3Attempt gentle controlled manipulation, stopping and reassessing if the patient is uncomfortable or the fetal heart becomes concerning.
  4. 4Confirm the resulting presentation with ultrasound, complete post-procedure fetal monitoring and administer indicated anti-D with FMH testing.
  5. 5Before discharge, explain warning symptoms and how to obtain urgent review, and document a plan after either successful or unsuccessful version.
03Persistent breechAgree the safest acceptable birth planECV has failed, been declined or is unsuitable and the fetus remains breech.+
  1. 1Discuss planned caesarean and selected vaginal breech birth, explaining the lower short-term neonatal risk with planned caesarean and the maternal and future-pregnancy effects of surgery.
  2. 2For a possible vaginal birth, obtain experienced assessment of breech type, head attitude, growth, maternal factors and the availability of trained staff and immediate surgery.
  3. 3Avoid treating footling presentation, hyperextended head or significant fetal compromise as an uncomplicated vaginal breech candidate; tailor the recommendation to the specific findings.
  4. 4If vaginal breech birth is chosen, plan hospital care with continuous fetal monitoring and a clear response to abnormal progress or fetal concern; induction is not usually recommended.
  5. 5If labour begins before planned caesarean, assess stage and wellbeing promptly because an imminent vaginal birth may be safer than attempting transfer into surgery.
Key medicines and prescribing safety2 treatments · regimens, roles and cautions+
Relaxes uterine muscle and improves the probability of a successful version attempt.

Terbutaline for ECV tocolysis

RCOG describes terbutaline 250 micrograms subcutaneously as a pragmatic single-dose regimen before ECV, with maternal assessment and monitoring according to the maternity protocol.

Betamimetics should not be used with significant cardiac disease or hypertension and may be ineffective during beta-blocker treatment. Explain transient tachycardia, palpitations, flushing and tremor; this supervised ECV use is distinct from prolonged treatment for preterm labour.

Prevents RhD sensitisation in an eligible RhD-negative patient after fetal cells may have entered the maternal circulation.

Anti-D immunoglobulin after ECV

For D-Gam after a sensitising event beyond 20 weeks, give at least 500 IU intramuscularly as soon as possible and within 72 hours, with FMH testing and additional dosing advised by the transfusion laboratory.

Confirm RhD and antibody status and the exact supplied product; D-Gam is intramuscular, whereas other anti-D products have different doses and routes. Seek product-specific advice when intramuscular injection is unsuitable. Prophylaxis does not treat established immune anti-D sensitisation.

Complications

01

Cord prolapse and compression

Cord descent is particularly concerning when a foot presents or the breech remains high after membrane rupture. Fetal heart changes may be the first indication of compromised cord circulation.

02

Difficult vaginal birth

Poor progress, extended arms or head entrapment may require skilled assistance and can cause fetal hypoxia or trauma. Suitability assessment and immediate access to experienced staff are therefore important.

03

Complications following ECV

Transient fetal heart changes can occur during manipulation. Persistent abnormalities, bleeding or placental separation are uncommon but may require urgent birth, which explains the need for monitoring and operative facilities.

Monitoring and follow-up

  • After ECV, confirm that the fetal heart assessment and maternal symptoms are satisfactory before discharge; persistent pain, bleeding or abnormal monitoring requires further evaluation.
  • Provide direct maternity contact advice for reduced fetal movements, vaginal bleeding, abdominal pain, contractions or membrane rupture after the attempt.
  • After successful ECV, continue pregnancy care according to the actual risk factors and reassess presentation when clinically appropriate because occasional reversion can occur.
  • After unsuccessful ECV, offer discussion of a repeat attempt when suitable and arrange a definite birth-planning review rather than leaving the next step unclear.
  • During planned vaginal breech labour, monitor the fetal heart continuously, assess progress closely and ensure experienced obstetric and neonatal assistance is available.

Special situations

Timing balances spontaneous turning and prematurity

Many early breech fetuses turn without intervention. Offering routine ECV substantially before 36 weeks provides no clear overall advantage and can increase preterm birth risk; the late-pregnancy timing allows a more meaningful decision about persistent presentation.

Successful turning does not promise vaginal birth

A cephalic position improves the available options, but labour after successful ECV still has a slightly higher assisted-birth and caesarean rate than an always-cephalic pregnancy. Discuss success as a change in presentation rather than a guarantee of the ultimate route.

A rare emergency still needs preparation

RCOG patient information gives an immediate emergency caesarean risk of about one in 200 after ECV, usually for fetal heart changes or bleeding. This small absolute risk explains the setting and monitoring without implying that every patient needs full routine preoperative preparation.

Unexpected breech requires practical judgement

When the baby is already close to birth, the safest response may be skilled vaginal assistance rather than a delayed attempt at caesarean. Summon expertise, avoid unplanned traction and prepare neonatal support; reading a description of manoeuvres does not replace supervised practical training.

Common pitfalls

  1. 01

    Equating breech at a mid-pregnancy scan with persistent breech at term and prematurely deciding the route of birth.

  2. 02

    Attempting ECV without a recent fetal assessment or access to emergency surgical delivery.

  3. 03

    Assuming one previous caesarean is an absolute ban on ECV without reviewing the individual circumstances.

  4. 04

    Omitting event-related anti-D or FMH testing because routine antenatal anti-D was already given.

  5. 05

    Promising that successful ECV guarantees an uncomplicated vaginal birth.

  6. 06

    Continuing an uncomfortable or concerning ECV attempt instead of stopping and reassessing consent and safety.