“Emergency Cerclage at 20 Weeks”: Rescue Stitches, Bulging Membranes, Risks and Success Rates
In this guide
If you have been told your cervix is already open and the membranes are bulging, or this happened to you and you want to understand it, this guide is for you. It explains what an emergency or rescue cerclage is, who it may be offered to, when it isn’t done, what the research shows about success rates, the risks, and the questions to ask. It also explains how the law looks at it when a rescue stitch wasn’t offered, or wasn’t explained.
Quick answer · updated November 2026
An emergency cerclage is a stitch placed when the cervix has already started to open and the membranes can be seen. In one review of mostly observational studies, it gained about a month on average and improved survival, but the evidence is weaker than for planned stitches. It isn’t done if there is labour, infection or bleeding. See the evidence.
An emergency stitch, stage by stage
- 1The findingAn open cervix and bulging membranes, on examination or scan.
- 2CheckingFor infection, labour, bleeding and your baby’s wellbeing.
- 3The decisionOptions, risks and likely benefit, explained and written down.
- 4The stitchIn theatre, usually under a spinal anaesthetic.
- 5AfterwardsWatching closely, and a plan if labour or infection starts.
At any stage: you can ask, “Is a rescue stitch an option for me? If not, why not? Can I have a second opinion?”
My son is four now. He’s obsessed with diggers and refuses to wear socks. When I tell this story, he’s usually somewhere nearby, crashing a toy excavator into the skirting boards.
At twenty-one weeks I went in for what I thought was thrush. The registrar did a speculum and went very still. “Your cervix is about two centimetres open,” she said, “and I can see the membranes.” I remember the paper sheet crinkling under me, and the sound of my own heart in my ears.
She said there wasn’t much to be done, that they’d put me on bed rest and “see what the night brings”. I lay on the ward with my feet up on two pillows, too frightened to go to the toilet.
At eight the next morning a consultant came in, looked at the notes, and said, “Has anyone talked to you about a rescue stitch?” By eleven I was in theatre with a spinal, staring at the lights, asking the anaesthetist to talk to me about anything at all.
He was born at thirty weeks. Ten weeks of neonatal unit, and then home. For years, though, I kept coming back to that night.
A composite story, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. It does not describe any individual client.
If you are reading this in a hospital bed with your feet raised, waiting for someone to tell you what happens next, I am so sorry. I hope this helps you understand your options and ask the questions that matter, quickly. If you are reading it afterwards, I hope it helps you make sense of what was offered, and what wasn’t.
This article is part of a series on failed cerclage and second-trimester loss. It covers what an emergency stitch is, who it may help, when it isn’t done, what the research shows, the risks, what to ask before agreeing, and how the law looks at it.
Why I can write this
I have been a medical negligence lawyer since 2013 and have worked on many hundreds of claims, a great many of them about pregnancy and birth. My doctorate looked at patterns of failure in medical negligence. I am not medically qualified. Australian guidance doesn’t set out detailed criteria for emergency cerclage, so the clinical content here draws on Australian hospital information, a 2024 review in the BJOG, and a current UK hospital guideline based on national UK guidance, all listed at the end. If you are facing this decision now, please talk to your specialist rather than relying on this article.
Start with your question
- What is an emergency or rescue cerclage?
- Who can have an emergency cerclage?
- When is a rescue stitch not done?
- What is the emergency cerclage success rate?
- What are the risks?
- What should I ask before agreeing?
- What if no one offered me a rescue stitch?
What an emergency cerclage is
Definition
An emergency cerclage, also called a rescue or physical examination-indicated cerclage, is a stitch placed when the cervix has already started to open and the membranes are exposed, seen on examination or ultrasound [1].
In plain terms: the cervix is already opening and the bag of waters can be seen. The stitch tries to close it and hold on.
Definition
Bulging membranes, sometimes called prolapsing or hourglassing membranes, means the bag of waters is pushing down into, or through, the open cervix.
In plain terms: the waters haven’t broken, but they are no longer safely held inside.
King Edward Memorial Hospital in Perth explains that most stitches are planned, but that in a few circumstances an urgent “emergency or rescue” stitch may be needed [2]. It is a different situation from a planned stitch at 12 to 14 weeks or a stitch placed because a scan shows shortening. The cervix has already changed, the membranes are exposed, and the window to act can be short. The other kinds of stitch are explained in the hub article “What Happens If a Cerclage Fails?”.
Who may be offered an emergency stitch
There is no detailed Australian guideline on emergency cerclage. In the UK, national guidance recommends considering one between 16 and 27 weeks and 6 days of pregnancy for women with a dilated cervix and exposed, unbroken membranes, with no signs of infection, and a current hospital guideline based on it sets out the detail [3].
May be considered when
- You are between about 16 and 28 weeks pregnant
- Your cervix is open and the membranes are exposed
- Your waters haven’t broken
- There are no signs of infection
- You are not in labour and not bleeding heavily
In plain terms: the cervix is open, but nothing else has started yet.
Not usually done when there is
- Active preterm labour
- Signs of infection (chorioamnionitis)
- Active vaginal bleeding
- Waters already broken (PPROM)
- Signs your baby is unwell, or has died
- A condition in your baby that isn’t compatible with life
In plain terms: a stitch can’t stop labour or infection, and can make them worse.
Based on a UK hospital guideline, 2024, citing UK national guidance [3]; London hospital patient information [4]. Practice in Australian hospitals may differ.
The same guideline notes that how far the cervix has opened matters: advanced opening, more than about 4 cm, and membranes pushing beyond the outer cervix are linked with a high chance of the stitch failing, and the benefit is likely to be greater earlier in pregnancy [3]. It says an emergency stitch can rarely be justified beyond 24 weeks, because of the risk that the procedure itself breaks the waters [3].
Before an emergency stitch, you should be checked for infection, labour and bleeding, and your baby’s heartbeat checked. If you are told a stitch isn’t possible, it is reasonable to ask which of these is the reason.
What the research shows: success rates
People search “emergency cerclage success rate” because they need a number. The honest answer is that the evidence is limited, and the numbers vary a lot between women.
About a month gained
A review of ten studies, only one randomised, found an emergency stitch prolonged pregnancy by about 34 days on average and improved newborn survival [1].
In plain terms: on average, more time, and more babies survived.
Weaker evidence
Most studies look back at records and report variable results. They didn’t say how open the cervix was at the time [1].
In plain terms: averages hide big differences between women.
A trial is under way
The UK C-STICH2 trial is testing whether an emergency stitch reduces pregnancy loss in women with exposed membranes at 16 to 27+6 weeks [5].
In plain terms: better answers are coming.
The BJOG review also reports meta-analyses including twin pregnancies, where an emergency stitch was linked with weeks gained and a lower chance of very early birth, without changing the rate of waters breaking or infection [1]. On the other side, the UK guideline is blunt: if you present before 20 weeks, an emergency stitch is highly likely to be followed by a birth before 28 weeks [3]. Both can be true. An emergency stitch may buy precious weeks, and those weeks may still end in a very early birth.
Online, you will read wonderful stories of rescue stitches that held to term, and devastating ones of stitches that failed within days. Both are real. The factors that seem to matter most are how far the cervix has opened, how far the membranes have come down, whether there is hidden infection, and how many weeks pregnant you are.
The risks
An emergency stitch carries more risk than a planned one, because the membranes are already exposed. A London hospital notes that an emergency stitch carries more risk, including infection and the waters breaking early [4], and a UK hospital leaflet lists the waters breaking during insertion as a particular risk with an emergency stitch [6]. Other risks of any stitch include bleeding, a tear in the cervix if labour starts with the stitch in place, and the risks of anaesthesia [6].
The BJOG review notes there isn’t enough evidence to say whether adding antibiotics or medication to stop contractions at the time of an emergency stitch helps [1]. You may be offered them; it is reasonable to ask why.
What to ask before agreeing
The UK guideline says women should be told that an emergency stitch aims to delay the birth and so increase the chance of the baby surviving, and should be given verbal and written information [3]. In practice, these conversations happen fast, often at night, often with someone you’ve never met. It is all right to slow them down.
Questions to ask before an emergency stitch
- How open is my cervix, and how far down are the membranes?
- Have you checked for infection, labour and bleeding?
- What are my options: a stitch, waiting, or something else?
- What is the chance this helps someone in my position?
- What are the risks, including my waters breaking?
- Is a senior obstetrician involved? Can I have a second opinion?
- If my baby is born soon, what care would they get here?
- What happens if labour or infection starts afterwards?
In plain terms: you have a right to understand the choice, even when time is short.
The procedure
A stitch is placed in an operating theatre, usually under a spinal anaesthetic so you are awake but numb from the waist down, or sometimes a general anaesthetic [2]. A speculum is used to see the cervix, and the stitch is placed around it; KEMH says the operation usually takes less than 30 minutes [2].
Afterwards
After an emergency stitch, you will usually be watched closely in hospital. If you are at or near the gestation when active newborn care is possible, steroids to help your baby’s lungs may be discussed. The warning signs that the stitch may be failing, such as cramping, bleeding, fluid, smelly discharge or fever, are the same as after any stitch [2], and are explained in “How Do You Know If Your Cerclage Is Failing?”. If labour starts, the stitch should be removed promptly to avoid tearing the cervix [1][2]. If your waters break, see “My Water Broke at 20 Weeks”.
If your baby is born very early, “Baby Born at 22 Weeks” covers survival, neonatal intensive care and comfort care. And for any future pregnancy, an emergency stitch in this one is an important part of your history: a planned stitch, or a transabdominal stitch, may be discussed. See “Transabdominal Cerclage in Australia” and “Pregnant Again After a Second-Trimester Loss”.
When he was three, I asked for my records. I told myself I needed to know about that night before we tried again.
The registrar’s note was there. “Cx 2 cm, membranes visible at os. Discussed with on-call consultant by phone. For bed rest, review mane.” And the consultant’s note the next morning: “Membranes at os, unchanged. No signs of infection. Rescue cerclage discussed, risks explained including ROM. Pt consents.”
I had always assumed that night cost him weeks. The independent obstetrician I eventually asked said something I didn’t expect: that waiting overnight to have a senior doctor examine me, check for infection and decide was within reasonable practice, that my cervix hadn’t changed by morning, and that he couldn’t say the night had made a difference.
I sat with that for a while. It wasn’t the answer I’d braced for. But it was an answer, and I believed it, because it came with the notes in front of us. I stopped replaying the pillows and the ceiling. Now I just tell him to put his socks on.
A composite story, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. It does not describe any individual client.
What to look for in the records
| Record | Why it matters |
|---|---|
| Speculum and scan findings | Show how open the cervix was, how far the membranes had come down, and when. |
| Infection screen and observations | Temperature, pulse, blood tests and swabs show whether infection was ruled out before a stitch. |
| Escalation notes | Show who was told, when, whether a senior doctor examined you, and how quickly. |
| Counselling and consent | Show whether a rescue stitch was offered, which options and risks were explained, and what you chose. |
| Operation note | Shows the type of stitch, technique, findings, and whether the waters broke during it. |
| Medication chart | Shows antibiotics, steroids or medication to stop contractions, and when. |
| Post-operative observations | Show how closely you were watched, and how warning signs were acted on. |
| Earlier antenatal and scan records | Show whether a short cervix or risk factors were known before the emergency. |
| Placental pathology | Often shows whether infection was present, which bears on why the cervix opened. |
My guide to getting and reading your birth records explains how to request them, and the Information and Privacy Commission explains your right to your own health information in NSW [7].
How the law looks at it
An emergency stitch that fails isn’t, by itself, negligence; neither is a decision not to place one. The questions are about how the decision was made and explained.
Was the care below standard?
Not negligent if widely accepted in Australia by peer professional opinion as competent practice [8].
In plain terms: was a rescue stitch considered, with a senior review, and infection checked?
Did it change the outcome?
Better care must probably have changed what happened. A lost chance alone is not enough [9].
In plain terms: would a stitch, or a quicker one, probably have bought enough time?
Were you properly informed?
You are entitled to be told about material risks and reasonable options [10].
In plain terms: were you told a rescue stitch existed, and its risks?
Because Australian guidance on emergency cerclage is limited and the evidence is uncertain, expert opinion will often differ about whether a stitch should have been offered in a particular case. Under section 5O of the Civil Liability Act 2002 (NSW), the question is whether what was done was widely accepted as competent practice, not whether another doctor would have done it differently [8]. Consent is often the clearer issue: under Rogers v Whitaker [1992] HCA 58, if a rescue stitch was a reasonable option, you were entitled to be told about it [10]. Causation, under Tabet v Gett [2010] HCA 12, is often the hardest part, because an emergency stitch is uncertain even when it is placed [9].
Who can claim depends on what happened: the mother for her own injury; the family if a baby was born alive and died; or the child, if a baby survived with lasting injury from being born early. If your child was born early, their time limits don’t always wait until they turn 18, so please ask early. The series article “Can I Sue the Hospital for My Miscarriage or Stillbirth?”, my page on pregnancy loss and stillbirth claims and my guide to time limits in NSW explain more.
In my practice
Emergency stitch files are about decisions made fast, often overnight, by people who may not have met before. The pattern I look for is the chain around the decision rather than the decision itself. Was the woman’s cervical history, or a short cervix on an earlier scan, visible to the person examining her? Was a senior obstetrician involved, or was the call made by phone? Was infection actively looked for? Was a rescue stitch mentioned at all, or was she told “nothing can be done” when, at another hospital that night, she might have been offered one? Sometimes the answer is that everything reasonable was done. Sometimes, as in the stories, a delay turns out not to have mattered. And sometimes the emergency was itself the last link in a chain that started months earlier, with a scan that wasn’t followed up.
Both can be true
A rescue stitch may have given your baby weeks they wouldn’t otherwise have had, and you may still have questions about the hours before it. A doctor may have made a careful decision not to offer one, and you may still have needed it explained to you better. You can be grateful and want answers at the same time.
The bigger picture
Emergency cerclage is one of the least settled areas of preterm birth care. The 2024 BJOG review lists it among the questions most needing research, including whether it helps after 24 weeks and which women are most likely to benefit [1], and the C-STICH2 randomised trial is under way in the UK [5]. In Australia, RANZCOG’s cervical length statement covers screening and short cervix rather than emergency stitches [11]. That uncertainty is a reason for careful, shared decision-making, not a reason to skip the conversation. In NSW, the Select Committee on Birth Trauma reported on 29 May 2024, with 43 recommendations [12].
Support
These services are free.
- Miracle Babies Foundation NurtureLine, 24-hour support for families with a threatened pregnancy or a baby in NICU: 1300 622 243 [13]
- Red Nose Grief and Loss, 24/7 support after pregnancy loss, stillbirth or the death of a baby: 1300 308 307 [14]
- Pregnancy, Birth and Baby, a free call with a maternal child health nurse: 1800 882 436
- PANDA, the National Perinatal Mental Health Helpline: 1300 726 306 [15]
- Lifeline, if you are in crisis: 13 11 14
My guide to finding support after birth trauma in Australia has more.
The mother in the stories still has the hospital bracelet from that night, in a drawer with a tiny blood pressure cuff from the neonatal unit. Her son has never noticed either. He’s too busy with the diggers.
With care,
Rosemary
Frequently asked questions
What is an emergency or rescue cerclage?
A stitch placed when the cervix has already started to open and the membranes are exposed. It aims to delay the birth and give the baby a better chance.
What is the emergency cerclage success rate?
A review of mostly observational studies found it gained about 34 days on average and improved survival, but results vary widely, especially with more dilation or earlier gestation.
Can you have an emergency cerclage at 20 weeks?
Often, if your waters haven’t broken and there is no labour, infection or bleeding. UK guidance considers it between 16 and 27+6 weeks.
Can you have a rescue cerclage with bulging membranes?
Yes, bulging membranes are the usual situation. How far they have come down affects the chance of success and the risk of the waters breaking during the procedure.
What are the risks of an emergency cerclage?
The waters breaking during or after the procedure, infection, bleeding, a tear in the cervix if labour starts, and the risks of anaesthesia.
Why wasn’t I offered a rescue stitch?
Sometimes because of labour, infection, bleeding or advanced dilation. You are entitled to ask the reason, and to a second opinion if time allows.
Questions about an emergency stitch?
When you’re ready, and not before, I can go through what happened and your records with you, and tell you honestly whether there are questions worth asking.
When the Stitch Doesn’t Hold: the series
- “What Happens If a Cerclage Fails?” Failed Cerclage and Losing a Baby in the Second Trimester
- “Can I Sue the Hospital for My Miscarriage or Stillbirth?” Time Limits and Compensation After a Second-Trimester Loss
- “Do They Check Your Cervix at the 20-Week Scan?” Short Cervix, Funnelling and Missed Risk Factors
- “How Do You Know If Your Cerclage Is Failing?” Signs of a Failing Stitch or an Incompetent Cervix, and When They’re Brushed Off
- “Emergency Cerclage at 20 Weeks”: Rescue Stitches, Bulging Membranes, Risks and Success Rates (you are here)
- “My Water Broke at 20 Weeks”: PPROM, Infection After Cerclage and What Happens Next
- “Baby Born at 22 Weeks”: Survival Rates, NICU and Comfort Care
- “Is 20 Weeks a Miscarriage or a Stillbirth?” Giving Birth, Funerals, Certificates, Leave and Payments
- “Why Am I So Angry After My Miscarriage?” Anger, Blame and “Is It My Fault?” After a Second-Trimester Loss
- “Transabdominal Cerclage in Australia”: Before Pregnancy, Success Rates and When It Fails
- “Pregnant Again After a Second-Trimester Loss”: How Long to Wait, a Preventative Stitch and Progesterone
More: Pregnancy loss and stillbirth claims · Birth trauma and obstetric negligence · Asking for a birth debrief · Complaining to a hospital
References
- Story L, Shennan A, Cervical cerclage: an evolving evidence base, BJOG 2024;131(12):1579–1586.
- Women and Newborn Health Service (King Edward Memorial Hospital, WA), Cervical cerclage: patient information, 2025.
- Frimley Health NHS Foundation Trust, Cervical stitch (cerclage) for preventing preterm birth in singleton pregnancy, version 2.0, February 2024, citing NICE guideline NG25.
- University College London Hospitals NHS Foundation Trust, Cervical cerclage: patient information.
- University of Birmingham, C-STICH2: emergency cervical cerclage to prevent miscarriage and preterm birth.
- University Hospitals of Leicester NHS Trust, Having a cervical stitch (cerclage) in pregnancy, 2024.
- Information and Privacy Commission NSW, Fact sheet: Accessing your health information in NSW.
- Civil Liability Act 2002 (NSW), s 5O.
- Tabet v Gett [2010] HCA 12.
- Rogers v Whitaker [1992] HCA 58.
- RANZCOG, Measurement of cervical length for prediction of preterm birth (C-Obs 27), current November 2021.
- NSW Legislative Council Select Committee on Birth Trauma, Birth trauma, Report 1, May 2024.
- Miracle Babies Foundation, NurtureLine.
- Red Nose, Grief and Loss Support Services.
- PANDA, National Perinatal Mental Health Helpline.
The stories in this article are composites, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. They do not describe any individual client.
About the author
Dr Rosemary Listing, PhD (Law), specialises in medical negligence, has been in practice since 2013, and is Of Counsel at Peter Evans & Associates in Newcastle, NSW. Her doctorate looked at patterns of failure in medical negligence, and she teaches health law at the University of Newcastle. She is not medically qualified; clinical information in this article is checked against the sources listed.
Last updated: November 2026 · First published: November 2026 · Next review: May 2027
Cite this article: Rosemary Listing, ‘“Emergency Cerclage at 20 Weeks”: Rescue Stitches, Bulging Membranes, Risks and Success Rates’ (Reframe Legal, November 2026) <https://reframelegal.com/emergency-cerclage-at-20-weeks/>.
This article is general information, not legal or medical advice. Every situation is different; please get advice about your own circumstances. If you have symptoms now, contact your hospital. If you or your baby need urgent help, call 000. If you are in crisis, call Lifeline on 13 11 14.
Legal services are provided by Peter Evans & Associates.
