PSYC 2076 Chapter : Child Development Chapter 4
Document Summary
Chapter 4 birth and the newborn infant: the three stages of labor. Labor is described in three stages, and together these stages complete the delivery and the passage of the placenta. uterine labor contractions. The first stage is divided into three phases: latent, active, and deceleration. Latent phase: the contractions become more frequent, stronger, and gain regularity, and most of the change of the cervix involves thinning, or effacement. Up to 20 hours for 1st time, 10-12 hours for 2nd time. Active phase: phase of the most rapid cervical dilatation. 5 hours for 1st time, 2 hours for 2nd time. Deceleration phase: transition cervical dilation continues, but at a slower pace, until full dilation. 2-3 hours for 1st time, shorter for 2nd time. This is when an episiotomy may be administered- incision in perineum to increase vaginal opening. Can be immediate, or up to 30 min.
