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| align="center" style="background:#f0f0f0;"|'''Picture'''
| align="center" style="background:#f0f0f0;"|'''Picture'''
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|1st
|1st: Dilation
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*Latent  
*Latent  
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[[Image:Stage 1.png|400px]]
[[Image:Stage 1.png|400px]]
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|2nd
|2nd: Birth
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*Cervix fully dilated  
*Cervix fully dilated  
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[[Image:Stage 2.png|400px]]
[[Image:Stage 2.png|400px]]
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|3rd
|3rd: Placental delivery
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*Placental delivery
*~20 minutes  
*~20 minutes  
**>18 minutes increases risk of [[postpartum hemorrhage]] with >30 minutes conferring very increased risk
**>18 minutes increases risk of [[postpartum hemorrhage]] with >30 minutes conferring very increased risk

Revision as of 01:43, 18 May 2019

Stage Info Picture
1st: Dilation
  • Latent
    • Passage of cervical mucous plug
    • Slow dilation to 3 cm
  • Active
    • Rapid cervical dilation from 3 cm to 10 cm
  • ~8 hours in primiparous and ~5 hours in multiparous

Stage 1.png

2nd: Birth
  • Cervix fully dilated
  • Urge to push
  • Expulsion of infant
  • ~20 - 50 minutes

Stage 2.png

3rd: Placental delivery
  • ~20 minutes

Stage 3.jpg

4th stage