What is a birth plan?
Note of what the woman wants re: labour and post birth
Is a woman required to have a birth plan?
a) Oestrogen, oxytocin
Which chemicals are released in response to oxytocin, inducing labour?
Stretch of the uterine muscles increases their excitability.
What can therefore trigger labour?
Growth of baby
What is the Ferguson reflex?
Oxytocin release in response to cervical stretch
Encouraging uterine contractions and childbirth
Which two hormones trigger prostaglandin formation?
Which reflex causes oxytocin release in response to the stretching of uterine / cervical muscle?
What ruptures at the beginning of labour?
"floods" of amniotic fluid
What is membrane rupture also known as?
When can membrane rupture occur?
Pre-labour (as intended)
Or baby can be born "in a caul" i.e still in the amniotic sac
What happens to the cervix as labour progresses?
Softens and dilates
What score is used to determine whether or not a medical induction of labour will be required?
What type of labour is advised if a woman's Bishop score is high?
What type of labour is advised if a woman's Bishop score is low?
Medical induction of labour
manual membrane rupture --> oxytocin
How many stages of labour are there?
As labour progresses, the ___ dilates until expulsion occurs.
How long does labour last on average?
Around 10 hours
What diameter does the cervix contract to in the first stage of labour?
What diameter describes complete dilatation of the cervix?
In which stage of labour is the baby actually delivered?
How long does the third stage of labour last?
After how long in the third stage of labour would you consider a caesarean section?
What is the medical name for false labour contractions?
When do Braxton-Hicks contractions occur?
What increases a woman's chances of having Braxton-Hicks contractions?
Which hormone is primarily responsible for true labour contractions?
Describe true labour contractions.
Duration = 10 - 45s
Frequency = 1 - 4 / 10 mins
Gradually shortening intervals
What is the purpose of labour contractions?
Pushes baby down into the pelvis ready for delivery
The power of uterine contractions is dependent on what?