PSYCH211 Chapter Notes - Chapter 4: Umbilical Cord, Low Birth Weight, Preterm Birth
9 Apr 2019
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Stage 1: dilation & effacement of the cervix: uterine contractions become more frequent & powerful & cause dilation of cervix opening of the cervix, Longest lasting 1st birth avg 12-14h, later births avg 4-6h effacement of cervix thinning of the cervix. If she tense/ bear down w* muscles before cervix is completely dilated & effaced she may bruise the cervix & slow process of labor. Stage 3: birth of placenta: brings labor to end. Caesareans: breech position inc the chances of. Justified when babies in breach positions butt/ feet pointing to birthing canal: squeezing the umbilical cord as the large head moves through the birth canal depriving the infant of o2, head injuries. In other cases, treatment harms the lungs. Preterm & low birth weight infants: babies born 3 or more weeks before end of full 38-week pregnancy or who weigh less than 5 pounds . Low birth weight often transmitted throughout generations women who were underweight at birth themselves.
