PSYCH211 Chapter Notes - Chapter 4: Infant Respiratory Distress Syndrome, Preterm Birth, Apgar Score
29 Nov 2017
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Psych 211 chapter 4: birth and the newborn baby. High levels of crh trigger additional placental hormone adjustments that induce uterine contractions. As crh rises it stimulates fetal production of the stress hormone cortisol, which promotes development of the lungs in preparation for breathing. Signs that labor is near: false labor/pre labor, lightening, bloody show. Stage 1: dilation and effacement of the cervix. As uterine contractions gradually become more frequent and powerful, they cause the cervix to open and thin, forming clear channel from the uterus into the vagina. Climax of stage 1 is called transition in which the frequency and strength of contractions are at their peak and the cervix opens completely: most uncomfortable part of childbirth, it is important that mother relaxes. Crowning: the vaginal opening stretched around the entire head. Few final contractions and pushes cause the placenta to separate from the wall of the uterus and be delivered in about 5 to 10 minutes.
