Breech Birth Network virtual seminars are open to all those who have attended our on-line or face-to-face courses this year. Upcoming seminars include:
25th June 1.30pm – The ‘Dropped Foot’ Baby in Labour
2nd July 1.30pm – Nuchal cords and vaginal breech births
14th July 6.30pm – ‘Buttock Lift’ for the birth of the fetal buttocks
To join one of the seminars listed above or any other which will be run over the course of the year, please see open the course in which you are enrolled.
Breech Birth Network, CIC is dedicated to training Midwives and Obstetricians of all levels in physiological breech birth and developing research exploring key breech birth issues. As well as running full days face-to-face training on physiological breech birth, our well attended and evaluated course is now available online. The course has been developed directly from research about physiological breech birth and can be accessed via this link.
To support the learning and development following completion of the online course, Breech Birth Network, CIC are now running live reflective sessions with an instructor. These group sessions will be run virtually and provide an opportunity to discuss important issues and clinical situations related to physiological breech birth. The sessions will be held on Zoom and facilitated by Dr Shawn Walker and Emma Spillane. The seminars are a chance for those who have attended the Breech Birth Network online training course to discuss issues related to practice, further understand some more unique scenarios and how to manage these in practice.
The seminars are an opportunity for healthcare professionals to come together and discuss all things breech! Each seminar will have a main topic or theme, but the conversation will be led by those attending. You can ask questions; discuss births you have attended and reflect on scenarios in practice.
Should we screen for nuchal cord using ultrasound when a woman is planning a vaginal breech birth? and
What should we do with the information if we do identify a nuchal cord on ultrasound?
‘Nuchal cord’ means that one or more loops of umbilical cord are wrapped around the baby’s neck, during pregnancy or birth. Checking for nuchal cord prior to external cephalic version (ECV) or during risk assessment prior to a vaginal breech birth (VBB) is both common and controversial.
cord-leg entanglement, image: Dr Pricilla Ribeiro-Huguet
What is known:
Nuchal cords are common, especially for breech presentation. For example, in this study (Wong & Ludmir, 2006), where someone specifically looked for a nuchal cord prior to an attempt at ECV, 34/75 (45.3%) babies were spotted wearing their cord as a necklace. They attempted the ECVs without this information. More babies with nuchal cords had transient (temporary) heart rate abnormalities, and their ECVs were less likely to be successful. But none of them had an emergency caesarean birth because of the way their heart rate was affected by attempting ECV.
It may cause problems in some pregnancies and/or births, but visual assessment by ultrasound does NOT help us to predict which ones. (… in general. Unless, as in this paper by Hinkson et al 2019, there are 6 loops of nuchal cord visible. Wow!)
double nuchal cord, image: Shawn Walker
What is not known: Does a nuchal cord increase the risk associated with an ECV or vaginal breech birth? We just don’t know if, or by how much, presence of a nuchal cord increases the risk. This is one reason neither of the RCOG guidelines (ECV, Management of Breech) indicate nuchal cord should be identified, or used as an exclusion criteria, for either of these. In fact, they don’t mention ‘nuchal cord’ or ‘cord around the neck’ at all.
When there is clinical uncertainty, we just say … there is clinical uncertainty. We can’t guarantee it won’t be a problem, but we have no clear evidence that it is likely to cause a problem.
Other guidelines often do say something like, “exclude nuchal cord.” This means, “Look for it with ultrasound to make sure it isn’t there.” But it’s not clear what one is supposed to do if you identify it IS there. And if a clinician has not looked for it, or has not spotted it, and it ends up being there and causing a problem during birth, have they been negligent? It’s a slippery slope.
cord-leg entanglement, image: Dr Anke Reitter
In my own clinical experience, breech babies born vaginally quite often have one or sometimes two loops of nuchal cord around their neck at birth. My gut feeling is that these babies more often needed help to flex the head, for example with a shoulder press, but that this was not more difficult than when the cord is not there.
I also checked our video study (Reitter, Halliday & Walker 2020) database of 42 breech births with ‘good’ outcomes. Among these, 8/42 (19%) had a cord wrapped at least once around the neck. Among these 8, 5/8 had help with the arms, and 6/8 had help to flex the head. This was slightly higher than the overall averages in the whole dataset. In the dataset, there were also 2 cases of leg entanglement, 1 case of arm entanglement, and 1 cord prolapse, where the cord comes out first.
It seems plausible that cord entanglement, whether around the neck or another body part, could interfere with the normal mechanisms of a vaginal breech birth. These babies may then require more assistance to be born safely, which is not itself a problem, as long as that assistance is provided in a timely fashion. It also seems plausible that in some case, a tight or short cord entanglement could cause problems that would put the baby at risk. But the kind of potential problems Peesay describes are all very likely to be picked up with the kind of close monitoring (growth scans, fetal heart rate monitoring, etc.) that every known breech baby received antenatally and/or in labour.
I’ve also added a ‘cord’ tag to several videos in our video library. If you’ve taken our Physiological Breech Birth course, you can search the library to watch several videos where cord entanglements feature and are resolved.
In summary, these are my recommendations:
Don’t routinely go looking for a nuchal cord in otherwise uncomplicated pregnancies.
If you do spot a nuchal cord, explain the clinical uncertainty with regard to its implications.
Offer and attempt ECV if the person chooses this.
Offer and support a VBB if the person chooses this.
When attending a VBB with a known/suspected nuchal cord in labour:
interpret fetal heart monitoring in light of this;
interpret descent in light of this;
anticipate the cord could interfere with the mechanisms, which may require your assistance; and
review all of your tools for assisting the head to flex.
I’d love to know others’ thoughts and experiences?
Shawn
This is really interesting. My breechy had the cord x3 round her neck then looped under her arm. Straight forward home birth. When chatting to midwife after we thought if she'd been cephalic the length of cord left may not have allowed her to descend, as bum first fine! Anecdata!
— Ellie Garlick RN MSCN 💙 (@EllieGarlick) June 2, 2021
