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*Active  
*Active  
**Rapid cervical dilation from 3 cm to 10 cm  
**Rapid cervical dilation from 3 cm to 10 cm  
*~8 hours in primiparous and ~5 hours in multiparous||
*~8 hours in primiparous and ~5 hours in multiparous
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[[Image:File:Stage 1.png|70px]]
[[Image:File:Stage 1.png|70px]]
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|2nd||
|2nd
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*Cervix fully dilated  
*Cervix fully dilated  
*Urge to push  
*Urge to push  
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[[Image:File:Stage 2.png|70px]]
[[Image:File:Stage 2.png|70px]]
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|3rd||
|3rd
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*Placental delivery  
*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
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[[Image:File:Stage 3.png|70px]]
[[Image:File:Stage 3.png|70px]]
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|4th stage||
|4th stage||
*1st hour after placental delivery   
*1st hour after placental delivery   
*Period of time with highest risk for [[postpartum hemorrhage]]||
*Period of time with highest risk for [[postpartum hemorrhage]]
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[[File:Stage 3.png|thumb]]
[[File:Stage 3.png|thumb]]

Revision as of 01:33, 18 May 2019

Stage Info Picture
1st
  • 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

File:File:Stage 1.png

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

File:File:Stage 2.png

3rd
  • Placental delivery
  • ~20 minutes

File:File:Stage 3.png

4th stage