Template:Birth stages table

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Labour Stages Changes Time Roles
Stage 1 dilatation 7 to 12 hours
longer for first child 		uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion
Stage 2 expulsion 20 to 50 minutes uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart
Stage 3 placental 15 minutes following child delivery contractions continue to expel placenta. haematoma separates placenta from uterine wall, separation occurs at spongy layer of decidua basalis
Stage 4 recovery 2+ hours continued myometrial contraction closes spiral arteries
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