Stages of Labor

A nurse calls the provider saying the patient is "complete" — but what does that actually mean, and what changes in your care at each transition? Confusing the stages costs time and safety.

Labor has four stages, each with distinct assessment landmarks and nursing priorities. Stage 1 is the longest, subdivided into latent phase (0–6 cm, irregular contractions, patient talkative and mobile), active phase (6–10 cm, contractions every 2–3 minutes lasting 60–90 seconds, increasing pain and focus), and transition (the final portion of Stage 1, approximately 8–10 cm, most intense, nausea, irritability, rectal pressure). Stage 2 begins at complete dilation (10 cm) and 100% effacement through delivery of the infant. Nulliparas average up to 2–3 hours; multiparas average 1–2 hours (longer with epidural). The nurse coaches pushing efforts and monitors maternal and fetal status closely. Stage 3 is delivery of the placenta, typically within 5–30 minutes. Signs of placental separation include a gush of blood, lengthening of the cord, and a globular-shaped uterus. Stage 4 is the first 1–2 hours postdelivery — the recovery stage — where the nurse assesses fundal firmness, lochia, vital signs, and bladder distention every 15 minutes. This stage carries the highest hemorrhage risk.

Key Distinctions

Don't confuse transition (end of Stage 1) with Stage 2 — transition is characterized by the urge to push, but pushing begins only after confirmed complete dilation. Students mix up Stage 3 (placenta delivery) with Stage 4 (recovery); Stage 4 is not about delivering anything — it's about hemorrhage surveillance. Latent labor was redefined: active labor now starts at 6 cm, not the older 4 cm threshold.

Clinical Pearl

"1-2-3-4: dilate, push it out, placenta out the door, watch the bleeding on the floor." Stage 4's 15-minute vitals catch hemorrhage before it becomes a crisis.