Sandbox

Stage	Info	Image
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
2nd: Birth	Cervix fully dilated Urge to push Expulsion of infant ~20 - 50 minutes
3rd: Placental delivery	~20 minutes >18 minutes increases risk of postpartum hemorrhage with >30 minutes conferring very increased risk
4th stage	1st hour after placental delivery Period of time with highest risk for postpartum hemorrhage