title: Fetal crown-rump length and biparietal diameter in the second trimester of pregnancy.
abstract: This study examines the relationships between fetal size (biparietal diameter and crown-rump length) and gestational age among subjects aborted by hypertonic saline in the second trimester of pregnancy. With a confidence of 90 per cent, biparietal diameter can be used to predict gestational age within plus or minus 2 weeks, and crown-rump length can be used to predict gestational age within plus or minus 3 weeks.
mesh_terms: D000028:Abortion, Induced; D001827:Body Height; D002508:Cephalometry; D005260:Female; D005333:Fetus / Q000033:anatomy & histology / Q000502:physiology*; D005865:Gestational Age; D006128:Growth; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012886:Skull / Q000196:embryology*; D012965:Sodium Chloride / Q000627:therapeutic use
chemical_list: D012965:Sodium Chloride