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Stages of Labor

Stages of Labor

Stage I
From onset of contractions through full
effacement and dilatation of cervix (latent
phase: 0–3 cm; active phase: 4–7 cm; transition phase: 8–10 cm). Duration-8 to 18 hours.
Stage II
From full dilatation of cervix until delivery of
baby. Duration—15 to 90 minutes.
Stage III
From birth of baby until expulsion of placenta.
Duration—up to 20 minutes.
Stage IV
First 1–2 hours after expulsion of placenta.

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