Stages of labour Flashcards
How long does the first stage of labour usually take?
8 hours - 18hours in nulliparous women, 5 hours - 12hours in multiparous women
What happens in the second stage of labour?
passive phase - cervix fully dilated
active phase - baby’s head visible, expulsive contractions with fully dilated cervix or pushing with fully dilated cervix
When do you diagnose a delay in the second stage of labour?
Nulliparous women - delay diagnosed if inadequate progression after 2 hours
Multiparous women - delay diagnosed if inadequate progression after 1 hour
How long can the latent stage of labour take?
latent phase is the first phase of the first stage of labour it involves cervical effacement and contractions 5-10minutes
Nulliparous - up to 20 hours
Multiparous - 10-12 hours
What would be considered a delay in first stage of labour?
progression of less than 2cm per 4 hours
What would be considered a delay in the second stage of labour?
active second stage >2 hours in nulliparous
active second stage >1 hour in multiparous
How long does the third stage of labour usually take?
30 minutes
What happens in the third stage of labour?
The placenta is delivered
What is the ideal contraction rate in active labour?
3-5 contractions every 10 minutes
Each contraction lasting 40-60 seconds
What is the latent stage of labour?
painful contractions + cervical changes: effacement and dilation up to 4cm
What is established labour?
regular painful contractions
cervix>4cm
When should a patient be transferred for obstetric led care on assessment of labour?
Tachycardic >90 x2 Hypertensive >160/>110 Protein 2+ and BP >140/>90 T >38 or >37.5 x 2 vaginal blood loss or meconium membrane rupture >24h before established labour Any other obstetric risk factors
What is the second stage of labour?
passive and active
passive - dilation of 10cm
active - pushing, expulsive contractions or visible head
