A genitourinary abnormality or IUGR is associated with which amniotic fluid finding, often with AFI 5 cm or pocket < 1 cm?

A genitourinary abnormality or IUGR is associated with which amniotic fluid finding, often with AFI 5 cm or pocket < 1 cm?

• A. Oligo
• B. Poly
• C. Hydrocephalus
• D. Frontal Bossing

Answer: (A)

Oligohydramnios is the amniotic fluid finding linked to fetal genitourinary abnormalities or growth restriction. After midgestation, fetal urine is the primary source of amniotic fluid, so when the kidneys are abnormal (or urine production drops with IUGR), the fluid volume decreases. On ultrasound, an amniotic-fluid index of about 5 cm or a deepest pocket under 2 cm indicates oligohydramnios; a pocket under 1 cm would be considered severe. This association explains why GU anomalies or IUGR commonly accompany reduced amniotic fluid. The other options describe different fluid scenarios or unrelated findings and do not correspond to a decreased amniotic fluid state.

Oligohydramnios is the amniotic fluid finding linked to fetal genitourinary abnormalities or growth restriction. After midgestation, fetal urine is the primary source of amniotic fluid, so when the kidneys are abnormal (or urine production drops with IUGR), the fluid volume decreases. On ultrasound, an amniotic-fluid index of about 5 cm or a deepest pocket under 2 cm indicates oligohydramnios; a pocket under 1 cm would be considered severe. This association explains why GU anomalies or IUGR commonly accompany reduced amniotic fluid. The other options describe different fluid scenarios or unrelated findings and do not correspond to a decreased amniotic fluid state.