NUR 413 Lecture Notes - Lecture 7: Pregnancy, Preterm Birth, Genitourinary System
6 May 2020
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Document Summary
Preterm birth accounts for 70% of neonatal morbidity & mortality: 1/2 of long-term neuro impairments in children. Preterm labor: 12% 32-33 weeks, 10% 28-31 weeks, 6% <28 weeks. Preterm birth: 12% of births in us, 1/8 of births in us. The most consistently identified risk factors for preterm birth. Hx of preterm birth: likely to experience it again. Very early labor (<28 weeks) is more likely the result of infection. In a study, 83% of preterm labor of less than 28 weeks had. Multiple gestation or polyhydramnios: causes stretching that can trigger the release of substances that induce uterine ctxs. Conditions like placenta previa & placental abruption: can cause the fetal membranes to rupture prematurely, can trigger preterm labor. Congenital uterine malformations: bicornuate or unicornuate uterus. Can cause preterm labor: uterine myomata. Cervical incompetence: congenital, maternal in utero teratogen exposure from diethylstilbestrol, acquired. Conization of the cervix for abnormal paps.
