PSYC 2076 Chapter : Chapter 4
Document Summary
Chapter 4 birth and the newborn infant. Labor is described in three stages, and together these stages complete the delivery and the passage of the placenta: stage one. The first stage is the process of reaching full cervical dilatation. This begins with the onset of uterine labor contractions, and it is the longest phase of labor. The first stage is divided into three phases: latent, active, and deceleration: in the latent phase, the contractions become more frequent, stronger, and gain regularity, and most of the change of the cervix involves thinning, or effacement. If water rupture, labor speeds up: the next portion of the first stage of labor is the active phase, which is the phase of the most rapid cervical dilatation. Most predictable, 5 hours for first 2 for second: finally, there is the deceleration phase, during which the cervical dilation continues, but at a slower pace, until full dilation. Vomiting and uncontrollable shaking for mom: stage two.
