••• Chapter 17^ Obstetrical Ultrasound and Fetal Abnormalities^183
❍ What substances are elevated in the amniotic fluid of a fetus with open neural tube defect?
AFP and acetyl cholinesterase.
❍ Three-dimensional/four-dimensional ultrasound is useful in the assessment of?
Fetal facial abnormalities. Cleft lip and palate when found as an isolated anomaly follow a multifactorial
inheritance. They have been associated with folate deficiency.
❍ This ultrasound demonstrates?
Fetal hydrops.❍ This ultrasound in association with fetal isoimmunization indicates?
Severe fetal anemia leading to cardiac failure.