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Preventing preterm labour

26 Aug 2024

In this article, Leonie McLaughlin, CRANAplus Remote Clinical Educator shares what remote practitioners can do to prevent preterm labour. For further information please enrol in a CRANAplus Maternity Emergency Care (MEC) or Midwifery Upskilling (MIDUS) course.

Pho­to: Syda Pro­duc­tions – stock​.adobe​.com

There is a great deal that the remote health prac­ti­tion­er can do to pre­vent preterm labour (PTL), we cov­er this in detail in both the MEC and MIDUS cours­es, but here is some infor­ma­tion to inform practice. 

First, let’s clar­i­fy some facts about preterm labour. A preg­nan­cy is clas­si­fied as preterm when it is over 20 weeks ges­ta­tion and before 37 weeks ges­ta­tion, thus preterm labour is the onset of labour dur­ing this peri­od. Around 9% of births in Aus­tralia are preterm, this fig­ure is almost dou­ble for First Nations women, and it is much more com­mon in rur­al and remote Aus­tralia, there­fore ear­ly iden­ti­fi­ca­tion and man­age­ment in rur­al and remote envi­ron­ments is imperative.

It is often dif­fi­cult to pre­dict who will go into preterm labour, as around half of preterm labours are spon­ta­neous and unex­plained. There are, how­ev­er, some poten­tial­ly mod­i­fi­able risk fac­tors asso­ci­at­ed with preterm labour. These include:

  • Pre­vi­ous preterm birth(15 – 30% recur­rence rate)
  • Preterm pre­ma­ture rup­ture of mem­branes (PPROM)
  • Mul­ti­ple pregnancy
  • Polyhydramnios/​oligohydramnios (too much/​too lit­tle amni­ot­ic fluid)
  • Antepar­tum haemorrhage
  • Sys­temic infection*
  • Sex­u­al­ly trans­mit­ted infec­tions (STIs)/urinary tract infec­tions (UTIs)*
  • Smok­ing*
  • Mater­nal trauma
  • Illic­it drug use*
  • Uter­ine abnormalities
  • Assist­ed repro­duc­tion e.g. IVF
  • Younger (<18) and old­er (>35) mater­nal age
  • Eth­nic­i­ty
  • Mater­nal stress.

*As you can see, whilst many of the above risk fac­tors can­not be pre­vent­ed, many can be pre­vent­ed, or at least risk managed.

Good ante­na­tal care, a trust­ing rela­tion­ship between women and their car­ers, cul­tur­al­ly safe and women-cen­tred care all go a long way to pre­vent­ing many com­pli­ca­tions of preg­nan­cy, includ­ing preterm labour.

Many preterm births (15 – 20%) are also the result of a mater­nal com­pli­ca­tion (i.e. Hyper­ten­sion or fetal growth restric­tion) which may lead to a deci­sion to induce labour ear­li­er than 37 weeks.

Pho­to: Mar­tin Capek – stock​.adobe​.com

But: what hap­pens if some­one does present to your health clin­ic with PTL?

Women in preterm labour may present with vary­ing symp­toms, including:

  • a gen­er­al feel­ing of being unwell
  • con­trac­tions
  • low­er back pain
  • a sense’ that all is not right.

A woman’s pre­sen­ta­tion to the clin­ic for care may not be for signs of preterm labour but for symp­toms of the cause of the preterm labour. For exam­ple, she may have been involved in a minor car acci­dent and she now has some inter­mit­tent abdom­i­nal pain and con­se­quent trau­ma or bleed­ing. Or, she may have a uri­nary tract infec­tion (UTI) which has trig­gered labour. There­fore, an impor­tant part of the assess­ment and man­age­ment of the woman is to deter­mine the cause of the preterm labour, and appro­pri­ate treat­ment of the cause where possible.

The goals of man­age­ment of preterm labour in a rural/​remote set­ting are:

  • Ear­ly recog­ni­tion of preterm labour.
  • Ear­ly con­sul­ta­tion with the refer­ring DMO/​retrieval team/​local con­sul­ta­tion & refer­ral path­way for man­age­ment and medications.
  • Med­ica­tions ordered may include: steroids to assist the baby’s lungs to mature, med­ica­tions to stop the labour, or antibi­otics if there are clin­i­cal signs
    of infec­tion (UTI/​STI/​other).
  • Assess­ment of and treat­ment for the cause of preterm labour.
  • Trans­fer to high­er lev­el care pri­or to birth (the safest way for a preterm baby to be trans­ferred is in utero).

As soon as you have gath­ered a his­to­ry from the woman and have done a thor­ough phys­i­cal assess­ment, you will need to dis­cuss the find­ings with the DMO or anoth­er refer­ral path­way and decide on a plan for man­age­ment and retrieval.

If the baby is born in your set­ting, the impor­tant key points are:

  • Resus: util­is­ing the ANZ­COR guide­lines sec­tion 13 https://www.anzcor.org/home/né… in par­tic­u­lar 13.8 which con­tains the infor­ma­tion rel­e­vant to preterm infants.
  • Keep the infant warm (if less than 32 weeks can con­sid­er plas­tic bag/​wrap). See ANZ­COR Guide­line 13.8 – The Resus­ci­ta­tion of the New­born in Spe­cial Circumstances.
  • Obser­va­tion for and man­age­ment of Res­pi­ra­to­ry Dis­tress Syndrome.
  • Check­ing for hypo­gly­caemia and man­ag­ing blood glu­cose lev­el accord­ing to local pro­to­col. Try to gain some colostrum if the baby can­not go to the breast (prem babies may not be able to), or pro­vide some calo­ries via oral glu­cose or for­mu­la, once again fol­low your local pro­to­col and med­ical orders.
  • Prem babies can be quite vig­or­ous ini­tial­ly but can tire quick­ly so require con­stant vig­i­lance and monitoring.

If you are inter­est­ed in learn­ing more about mater­ni­ty care in rur­al and remote set­tings, con­sid­er enrolling in our MEC or MIDUS cours­es.

Ref­er­ences

Aus­tralian Gov­ern­ment – Depart­ment of Health and Aged Care (2019) Risk of preterm birth. https://​www​.health​.gov​.au/reso…

Aus­tralian Preterm Birth Pre­ven­tion Alliance (n.d.) Caus­es of Preterm Birth. https://​www​.preter​malliance​.com​.au/​A​b​o​u​t​-​P​r​e​t​e​r​m​-​B​i​r​t​h​/​C​a​u​s​e​s​-​O​f​-​P​r​e​t​e​r​m​-​Birth

Aus­tralian Preterm Birth Pre­ven­tion Alliance (n.d.) Preterm Birth in Abo­rig­i­nal Pop­u­la­tions. https://​www​.preter​malliance​.co…

RANZCOG (2021) Term Prelabour Rup­ture of Mem­branes (Term PROM). https://​ranzcog​.edu​.au/​w​p​-​c​o​n​t​e​n​t​/​u​p​l​o​a​d​s​/​2022​/​05​/​T​e​r​m​-​P​r​e​l​a​b​o​u​r​-​R​u​p​t​u​r​e​-​o​f​-​M​e​m​b​r​a​n​e​s​-​T​e​r​m​-​P​R​O​M.pdf

Safer Care Vic­to­ria (2018) Preterm labour. https://​www​.bet​ter​safer​care​.vi…

Remote Pri­ma­ry Health Care Man­u­als. (2022). Women’s Busi­ness Man­u­al. (7th edi­tion). Alice Springs, NT: Flinders Uni­ver­si­ty

AIHW Moth­ers & Babies Report 2023. https://​www​.aihw​.gov​.au/​r​eport…

ANZ­COR (2023). Guide­line 13.8 – The Resus­ci­ta­tion of the New­born in Spe­cial Cir­cum­stances. https://www.anzcor.org/home/né…