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Stages of Labor (1)

Stages of Labor (1)
Stages of Labor (1)

Initial (Latent) Phase Contractions are irregular at first but become progressively stronger and more rhythmic. Discomfort is minimal. The cervix begins to thin and opens to about 1 1/2 inches (4 centimeters). This phase lasts an average of 8 hours (up to 20 hours) in a first pregnancy and 5 hours (up to 12 hours) in subsequent pregnancies.

Locations