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[0] At 35 weeks of pregnancy a woman experiences preterm labor. Although tocolytics are administered and she is placed on bed rest, she continues to experience regular uterine contractions, and her cervix is beginning to dilate and efface. What would be an important test for fetal well-being at this time? [1] Percutaneous umbilical blood sampling (PUBS) [2] Ultrasound for fetal size [3] >>Amniocentesis for fetal lung maturity [4] 
Nonstress test
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