title: The neonatal bisacromial diameter: a prenatal sonographic evaluation.
abstract: This study was designed to determine which fetal ultrasonographic parameter best correlates with the neonatal bisacromial diameter (BAD). The latter is defined as the distance between the two acromions of the scapulae. The study population included fifty-four uncomplicated singleton pregnant patients whose infants with birth weights of more than 3000 grams were delivered within a week of ultrasound examinations. Six fetal biometric parameters: circumferences of the chest, abdomen, head, arm, and thigh, and estimated fetal weight were obtained by ultrasonography and were compared with the BAD. The best predictor of the neonatal bisacromial diameter was the fetal chest circumference (r = 0.67, p = 0.003) followed by the arm circumference, (r = 0.59, p = 0.03). The fetal chest circumference correlates well with the neonatal shoulder girth as reflected by the neonatal bisacromial diameter.
authors.affiliation: Center for Fetal Diagnosis and Management, St. Louis University, Missouri, USA.
authors.forename: H N
authors.initials: HN
authors.lastname: Winn
authors.forename: W
authors.initials: W
authors.lastname: Holcomb
authors.forename: J B
authors.initials: JB
authors.lastname: Shumway
authors.forename: A
authors.initials: A
authors.lastname: al-Malt
authors.forename: E
authors.initials: E
authors.lastname: Amon
authors.forename: J C
authors.initials: JC
authors.lastname: Hobbins
mesh_terms: D004420:Dystocia / Q000209:etiology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012782:Shoulder / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000196:embryology; D016216:Ultrasonography, Prenatal