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Kick starting labour – a new model of uterine function

Guest blog by Margaret Jowitt

The current management of women in labour is based around RCTs of what health professionals do – or don’t do – to women under their care. Physiology comes right at the bottom of the hierarchy of evidence in evidence based medicine, but in the case of childbirth, a physiological process rather than a disease to be treated, physiology should head that list. We should be managing care according what the woman’s body needs in order to labour efficiently and effectively.

Traditionally, the forces of labour are described in terms of the Powers, the Passenger and the Passage. Somewhat bizarrely, this model denies both the mother and her baby any active involvement in the process.  We can make a better model of labour when we consider the mother and her baby as active participants. The uterus is the interface between them. Both the mother and her baby have bodies which can move and affect the effectiveness of uterine activity.

It is true that in mechanistic terms the uterus is the ‘engine’ of labour. It is the strongest muscle in the body but it is acting upon that most delicate of human beings, a baby. Mistreated engines tend to seize up, sometimes with catastrophic consequences.  Understanding how the uterus works is central to good maternity care but most textbooks have little to say on the subject, they simply refer to uterine function as the ‘Powers’. Contractions just happen – or not. And if not, labour can usually be kick started with artificial oxytocin.

Labour is a hormonal event. We have only to look at the effects of syntocinon (Pitocin) infusions to know that oxytocin has a very powerful effect on the uterus but physiologists are aware that blood levels of natural oxytocin do not increase until second stage.  What drives labour before second stage seems to be the increasing sensitivity of the uterus to these lowish levels of oxytocin.  We also know that, even in established labour, contractions can stop and that the likely mechanism is antagonism of  oxytocin by the stress hormones secreted by anxious or fearful mothers. Preventing or alleviating the mother’s stress will improve uterine function. This is where supportive midwifery care comes into the picture.

But there is another driver of contraction which physiologists know about but doesn’t make the clinical textbooks and that is stretch. Most smooth muscle, including that of the uterus, is activated by stretch. That is how food moves along the intestines, faeces through the colon and blood through the veins.

The heart, a special form of smooth muscle, has a pacemaker to drive its contractions and scientists have been searching in vain for a pacemaker site in the uterus. Instead they have found that any site in the main body of the uterus has the capacity to be either a pacemaker or a pace follower. 25 years ago I proposed that fetus him/herself ‘steered’ themselves towards the exit by means of what I called the stretch-contract reflex.  Visualise a balloon shaped trampoline and put a kicking baby inside. The origin of a contraction will be where the fetus is stretching the uterus. Shortly after my first book, Childbirth Unmasked, was published, Sheila Kitzinger rang me to suggest that the so-called neonatal reflexes could be involved. This was a vast improvement on my initial idea. Milani Comparetti, the father of paediatric neurology, proposed that the neonatal reflexes enabled the fetus to search for the ‘invitation to softness’.  The fetus himself may kick his way into the best position for his journey through the birth canal.

Is the fetus really able to position her/himself for entry into the birth canal? Does the fetus utilise his/her reflexes to negotiate the birth canal? Could cerebral palsy be the cause of a difficult labour rather than being a consequence? We don’t know, but a role for fetal positioning in labour is a testable hypothesis. I am no lover of electronic fetal monitoring, but we would need a few expectant mothers who were willing to undergo multi-channel monitoring for a few contractions.  Electromyography can already record electrical activity in the uterus at more than one place at once and the source and spread of a contraction can be mapped using powerful computer software. At the same time movement activated LED lights could be placed in a network over the mother’s abdomen and videoed to provide a corresponding map of activity. We could then see whether there was any correlation between fetal movements and uterine activity.  A few contractions from a few women with babies in different positions (e.g OP, AP, breech) and with the women adopting a different position for each contraction should yield a wealth of data for a computer to crunch.

If the results supported the hypothesis, the importance of maternal freedom of movement would become apparent. The mother, her fetus and the uterus would all need to have as much freedom of movement as possible in order to enable the fetus the manoeuvre him/herself in the optimum position for birth. Restricted movement would lead to pain and failure to progress, all too often found in ‘managed’ births where electronic fetal monitoring limits mothers’ choice of position.

My most recent mindshift has been in the area of the material substance of the uterus – by which I mean the composition of the biological tissue of which it is formed.  We already know that there are hormonal changes in terms of receptor sites for various contraction associated proteins (CAPs), but what if substantial changes to the gross anatomy of the uterus involving tissue remodelling was taking place during labour itself? What if the uterus started to remodel itself during labour (as we know it does during the days that follow)?

We already know that the cervix has scaffolding of collagen  which keeps it shut during pregnancy and which can be artificially ripened (broken down) by prostaglandins so that it can to stretch to 10 cm in the course of labour.

The uterus also has collagen scaffolding.  This is less well known  – tissue samples from the main body of the pregnant uterus are harder to come by. What if uterine collagen performs the same task as the collagen scaffolding at the cervix, preventing stretch-initiated contraction? What if this collagen is also broken down (by prostaglandins, IL-8 and MMP8, collagenase) during labour? The loss of collagen scaffolding then affects the biomechanics of the uterus, allowing it to become progressively more stretchable and more contractable. The ‘trampoline’ of the uterus becomes ‘bouncier’. Contractions become more effective. The fetus starts searching for the best way out.

Now for the final piece of the puzzle, the onset of labour. We know that in other mammals the fetus is involved in initiating labour by a hormonal mechanism which changes the balance between oestrogen and progesterone, but in humans progesterone levels remain high even at the onset of labour. In order to be able to give birth to a baby with a bigger head, we evolved to give birth earlier in pregnancy when the progesterone block was still in place. Rising oestrogen does still plays a part in the onset of labour. On a signal from the fetus, oestrogen rises and primes the uterus for labour by increasing oxytocin receptors and gap junctions. The oxytocin receptors make the uterus more contractile and the gap junctions allow electrical activity to spread to involve the whole uterus.

It looks as though the alternative mechanism (from a change in the oestrogen:progesterone ratio) for the onset of human labour may be stretch-activated inflammation acting on a primed uterus.  The only difference between Braxton Hicks contractions and the contractions of labour are that BH contractions are less powerful and don’t spread so far. In the oestrogen primed uterus, contractions can spread. Inflammation is a primary driver of labour, often associated with premature labour. According to Kim et al of Imperial College (unpublished paper, unknown date):

“The stimuli triggering inflammatory activation in normal human parturition are not fully understood.”

I think the elusive inflammatory event that precipitates labour is increased stretch made possible by loss of collagen, the same biochemical mechanism that causes cervical ripening. Both twin pregnancy and polyhydramnios are associated with premature labour. The uterus is already distended so it takes little more to push it over the edge into labour. Breaking the waters can kick start labour in a uterus that is already primed for labour because now the fetus is able to stretch one part of the uterus with more force.

What can we do to improve uterine efficiency?

RCTs have shown better outcomes with caseload midwifery and out-of-hospital birth. This suggests that the powerhouse of the uterus tends to work better when its owner is cared for by a midwife, preferrably a midwife already known to her. Labour progresses more quickly at home when measured by the simplest of parameters – length of labour. The Birthplace study (2011) doesn’t give average length of total labour for all women, but women giving birth in obstetric units laboured there for 9 hours and women giving birth at home had a midwife for 6.6 hours. Midwives encourage women to move freely, women are less likely to be tethered to a fetal monitor and asked to remain still. Midwives are expert in rearranging the furniture to allow women freedom of movement. Labouring in water is even better.

All women need freedom of movement, not just low risk women deemed suitable for midwife-led care. We should stop putting women to bed for labour and we should outlaw tight belts holding transducers in place, we may be preventing the very activity that we need to enhance. I found that forward leaning positions were least painful in my labours. These positions keep the main body of the uterus away from the maternal bones.

You can see a visual representation of the ‘collagen scaffolding’ on a youtube animation made to illustrate a kneeling chair I have designed for labour and birth and which, I hope, illustrates why I am so passionate about giving women freedom of movement in labour. Freedom of movement should not just be a ‘nice to have’ option for low risk women but a physiological imperative for all women in labour. (In case you were wondering, freedom of movement should also include freedom to choose the bed!)

 

Mini Birth Couch Kit and Extension

 At 115cm long, the Mini Birth Couch is made for small rooms.  But sometimes the thing taking up the room is the bed! Midwives have asked us to make a foam ‘block’ to extend the couch to 2m long so that it can be used as a bed.  The block comes with a stretch-fit valence-style cover that holds the pieces together.  The block and the cover are in the same heather colour as the Mini Birth Couch itself.

See https://softbirth.com/mini-birthing-couch-kit/

Discount Birth Couch

We have a navy blue birthing couch similar to the one in the picture below. It is new and unused.  This couch is supplied with one liner fitted and a spare liner supplied. So, you will need to put the spare liner on. £750 + £12 delivery and VAT. GONE!

birthing couch Softbirth

Optional – recess on left

Mini Birthcouch Kit at Shrewsbury MLU

mini-birth couch kit at Shrewsbury

We had a little jaunt to see the midwives at MLU and before we knew it we had an idea for another product and this Mini Birthcouch kit is in their MLU for mums to try out.

The mini kit is about half the length of the full-size softbirth birthing couch (115cm instead of 200cm long).  The midwives asked for an extra rectangular piece 115cm long so that they could make it into a long bed or, put it side by side with the kit here to make a big square bed.  They would be held in place by a ‘fitted sheet’ made of the same PU material used for the couch itself.

Which is a good time to remind you that we can make stuff if you have an idea for something different.  Get in touch with some measurements and we can make it for you.

Customise your Design

And we can customise existing designs.  If you want a narrower or wide couch, please ask because it probably won’t cost any more!  Cambridge have a birthcouch and they sent us a picture of it  the way that worked best for them.  But it is upside down.  (You can see the text in top but, more importantly, the safety flaps covering the zip are facing up and could collect any ‘fluids’ and allow them to seep into the cushion.)

 

birthing couch Softbirth

If you would like you cushion on the right instead of the left (see the picture of the default design here), then let us know and we’ll make one for you. Same price.

Small Birthing Couch

Following the popularity of the SoftBirth birthing couch, we’ve been asked to make a small birthing couch that will fit into smaller birthing rooms or in the back of a small car.  Here she is!  The mini couch kit is made of the same fully cleanable PU material as the full-size SoftBirth birthing couch kit.  It is double lined for additional safety too and the zips are covered by wide flaps.  The dinky birthing couch is 115cm long x 85cm wide by 40cm high.  Just like its big sister, it has the pull-out seat for partner or midwife. And a shaped kneeler so that the birthing mum can kneel into the recess and lean into it.

We met Wendy Cutchie, HoM for MLUs across Shropshire  at #SaTHFMU conference and she asked for a smaller version of the SoftBirth birthing couch.  So, we’ve made her one.   We can turn round new products very quickly and cheaply.  Midwives from Burton Hospital also asked us for a breast-feeding cushion to sit on top of the birthing couch. That has been designed and is ready. We’re looking for a hospital (with a couch) who’d like to trial it for us.  Get in touch if you’re interested.  We can turn around new products very quickly.  So, if there any things you’d like us to design for you, get in touch! We’d love to make something for you.small birthing couch kit

 

The smaller birthing couch with Midwives.dinky birth couch at #WARM17

The dinky birth couch had its first outing to a meeting of the ARM at Wigan (#Warm17) last week.

 

 

 

How much is a dinky birthing couch kit?

The special offer price on the full size SoftBirth birthing couch kit comes to an end on the 31st March. The dinky birthing couch comes in at an introductory price below £600 with FREE delivery in the UK.

 

 

 

#SoftBirth Birthing Couch Kit

birthing couch Softbirth

SoftBirth Birthing Couch Kit

The special offer price on the SoftBirth Birthing Couch Kit  comes to an 31st March 2017. This is rapidly approaching but orders placed before 31st will still qualify for the discount.

SoftBirth Birthing Couch at #SaTHFMU Conference, Shrewsbury, 2017

SoftBirth Birthing Couch at #SaTHFMU Conference, Shrewsbury, 2017

Since the trial at Darrent Valley in Kent, we’ve sold birthcouch kits to Bath, the Royal Berkshire, Burton on Trent, Derby, Great Yarmouth, Llandrindod, Newtown, Oldham, Warrington, Welshpool, Wirral and Wolverhampton – and that’s just the ones I can remember!

Orders placed before the 31st will still qualify for the special offer price of £795+delivery and VAT – and there are further discounts for ordering 2 or more!

Contact Ruth on 0345 230 1381 or contact us now for details.

Rebozo Birthing Slings for Active Birth Environments

When we started SoftBirth, our aim was to create a ‘whole birth environment’ for active birth settings. Today we are one step closer with the exciting introduction of our new range of Rebozo Slings.

Midwives, if you haven’t yet utilised a sling to assist a woman in labour, you may be surprised to learn how versatile and successful they can be in assisting birth.  Look out for our next Blog: Midwives – 7 Tips and Tricks for Using Softbirth Rebozo Slings.

The rebozo, of Mexican origin, is a long shawl-like strip of tightly woven, colourful fabric. It has been used traditionally by generations of indigenous women to carry babies, wrap the belly during pregnancy and the postpartum period, and of course as a tool during labour and birth. It is also handy for protection from the sun, not that those of us residing in Europe need that at the moment!

Frida Kahlo wearing a rebozo

Frida Kahlo; the most famous rebozo wearer?

An increasing number of maternity units and birth centres are installing rebozo slings and running workshops on how to use them to facilitate birth, although there have previously been limited options on the market suitable for use in such rigorous environments. After much research we believe we have found the perfect solution, marrying form and function, and today we are launching a beautiful range of sling fabrics to match every colour scheme, plus a strong, easily installed ceiling mount system to hang them from.

A rebozo used during all stages of labour provides an aid to help the mother assume helpful, supported positions which relieve pressure, offer comfort and assist in optimising foetal position.

Robust

testing birthing slings

Weight-testing the sling cloth

We know that the average Midwife Led Unit or Birth Centre sees thousands of births a year with thousands of different women.  Therefore quality and functionality were our first priorities when putting our prototype slings through their paces.

The tensile strength of the fabrics have been tested using a variety of weights and techniques up to 175 kilos. (We recommend double looping the fabric through the caribiner clip for maximum strength).

Long and Strong

All our slings are a generous six meters in length, giving plenty of length for loops and knots. They are manufactured in a beautiful series of jacquard weave cottons with a minimum fabric weight of 280gsm for extra luxury and durability.

Birthing sling rebozo material

Beautiful, robust weaves in a range of designs

 

Washability

SoftBirth sling fabrics are cotton or cotton blend and have been wash tested to 60°C with no noticeable loss of colour and a shrinkage allowance of just 3%.

Fixings

Sling mount

Made in the UK by experienced metalworkers, our purpose made steel ceiling mount and caribiner clips are virtually indestructible, yet incredibly easy to fit at a fraction of the price of other mounted fittings currently on the market, leaving you room to spend your budget on other home comforts

 

Take a look at the products section of our website to see our full range

 

Latest Posts

Words from a mum, as reported by a Baroness

At today’s conference at Shrewsbury Hospital (#SaTHFMU) there was a quote from Baroness Cumberlege that would not break easily into 140 characters.  It was a piece of feedback from a mother to a maternity consultation about how she wanted her care to be.

  • Listen. Listen. LISTEN.
  • Don’t overwhelm me with your paperwork.
  • I decide what is important.
  • Show respect.
  • Do not patronise.
  • It is our new family that make decisions.

Wrap your services around this. Not me round your service.

 

 

Implementing the National Maternity Review in Rural Areas Conference

SoftBirth will be attending the conference in Shrewsbury on 13th February.  Come and see a couch for yourself!birthing couch Softbirth

https://www.eventbrite.co.uk/e/implementing-the-national-maternity-review-in-rural-areas-tickets-30546634807

Birthing Couch Kit Special Offer

The SoftBirth birthing couch kit is on special offer

Instead of the normal price of £950, the kit will be held at £795 until the 31st March 2017.

Innovative yet simple, the Birthing Couch Kit has been exclusively designed for SoftBirth and comes in versatile segments that can be moved around to suit the needs of the moment.

The integrated stool pulls out to give comfortable seating for the Midwife or birth partner.  The recess created can then be used for the mother to kneel in a supported position.  We even include an interlocking kneeling mat for comfort.

When fully assembled the couch becomes a comfortable flat surface for mothers to relax with their newborns.  For Midwives this gives easy access for exams and suturing without the need for a bed.

Choice of three tasteful colours –
dark heather, teal  or french navy

Comes complete with integrated kneeling
mat and stool

Additional memory foam topper available
for supreme comfort

Additional covers available to purcha­se

Manufactured in the UK

Meets all requirements for infection control

Designed in consultation with Midwives
and mothers

More details softbirth_midwives_flyer  and a specification sheet softbirth_spec_sheets_birth couch

Or see the website direct at https://softbirth.com/