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Pregnancy and birth

Umbilical cord prolapse: recognising and responding to the emergency

Umbilical cord prolapse is when the cord slips down in front of the baby after the waters break. The cord can be squeezed, which reduces the baby's oxygen supply, so it is treated as an emergency. It is rare and the outlook for most babies is good when help arrives quickly.

Last checked: 2026-10-03

Key facts

At a glance.

  • How common

    Between 1 in 200 and 1 in 1,000 births, usually near the end of pregnancy after 37 weeks.

  • At home

    Call 999, get onto knees and elbows or lie on your side with a pillow under your hip, and do not touch the cord.

  • In hospital

    Staff lift the baby's head off the cord, may fill the bladder, and usually arrange an emergency caesarean.

  • Outlook

    For most babies there is no long-term harm, though severe lack of oxygen can cause brain injury or, rarely, death.

  • Higher risk

    Breech or transverse position, preterm waters breaking, multiple pregnancy, excess fluid, a small baby or a low-lying placenta.

How the cord ends up in the wrong place

The cord carries blood and oxygen between the placenta and the baby. Normally the baby's head sits snugly on the cervix, which keeps the cord out of the way. When the waters break, a rush of fluid can sweep a loop of cord ahead of the baby, especially if the baby's head is not engaged. The loop is then trapped between the baby and the pelvis, so each contraction can squeeze it.

Who is more likely to have it

Cord prolapse is more likely whenever the baby is not lying head down and low in the pelvis, or when there is extra room around the baby. The RCOG lists the factors below. Having one of them does not mean prolapse will happen; it means staff will think about the possibility sooner.

  • Breech or transverse lie.

  • Waters breaking before 37 weeks, or preterm labour.

  • Twins or other multiples.

  • Too much amniotic fluid (polyhydramnios).

  • A small baby.

  • A low-lying placenta.

  • Artificial rupture of the membranes while the baby's head is still high.

Signs to recognise

You may see or feel something soft, smooth and pulsing at the vaginal opening, or feel a loop of cord. In hospital, the first sign is often a sudden slowing of the baby's heartbeat (bradycardia) soon after the waters break, and staff find the cord on an internal examination. If your waters break and your baby is breech, early, or one of twins, do not wait to see what happens: ring the maternity unit.

What to do if it happens at home

Call 999 and say that you think the cord has come down. While you wait, take pressure off the cord by getting into the knee-chest position, with your elbows and hands on the floor and bottom in the air, or by lying on your left or right side with pillows under your hip. Do not push the cord back or handle it more than you need to, and do not eat or drink in case an anaesthetic is needed.

Treatment in hospital

Once diagnosed, the team moves fast. A midwife or doctor may place a hand in the vagina to lift the baby's head off the cord. Sometimes a catheter is inserted into the bladder and filled with fluid, which pushes the baby upwards and takes pressure off the cord. You will be transferred to theatre for an emergency caesarean, often under general anaesthetic because of the urgency.

A vaginal birth is only chosen if the cervix is fully dilated and the baby can be born almost at once.

Outlook and afterwards

The RCOG states that most babies suffer no lasting harm. Where the cord was compressed for long enough, a baby can be affected by lack of oxygen, and some need cooling treatment or neonatal care. After the birth you will be offered an explanation, because an emergency like this can be frightening. Cord prolapse can be a one-off event; it does not by itself mean it will happen in a future pregnancy, although the risk factors that contributed may be discussed.

Frequently asked

Questions people ask.

Quick, plain-English answers to the questions we hear most.

  • Can I prevent cord prolapse?

    Not entirely. It is more about recognising risk, for example by avoiding artificial rupture of the membranes when the baby's head is high.

  • What should I do if my waters break and the baby is breech?

    Contact your maternity unit straight away, because the risk is higher. If you can see or feel the cord, ring 999.

  • Is it painful?

    The cord itself is not painful. What you notice is a soft, slippery loop at the opening, or the baby's movements changing.

  • Why must I not touch the cord?

    Handling can make the cord go into spasm, narrowing the blood vessels and reducing blood flow to the baby.

  • Why can I not eat or drink?

    An emergency operation, sometimes with general anaesthetic, is likely and an empty stomach is safer.

  • Will I have a caesarean?

    Usually yes, an emergency one. Vaginal birth is only an option when the cervix is fully dilated and the baby can be delivered immediately.

  • Will my baby be harmed?

    For most babies there is no long-term harm. If severe, oxygen shortage can cause brain injury or death, which is why speed matters.

  • Does it happen with twins?

    Multiple pregnancy is a recognised risk factor, so twin births are planned with this in mind.

  • Does it mean future babies will have it?

    Not necessarily. Risk factors from the earlier pregnancy are reviewed when your next birth is planned.

Where this comes from

Sources and checking.

This guide is for information, not medical advice.

Your GP or consultant knows your history and can tell you which parts apply to you. If your symptoms are severe, rapidly worsening, or come with red-flag features, seek urgent medical care. Figures and availability change, so treat them as a guide and confirm with the provider.

Published 2026-10-03, next review 2027-10-03.

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