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Fetal Medicine Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

Fetal Goiter

Advanced Technical IVT

Enlargement of the fetal thyroid gland visible on prenatal ultrasound, potentially affecting delivery and neonatal care.

Showing 49–72 of 100

intrauterine transfusion

Professional Technical IVT

Procedure to transfuse blood directly into the fetus to treat severe anemia.

Technical Term Full entry →

IUGR

Intermediate Technical IVT

Intrauterine growth restriction - condition where fetal growth is below expected parameters.

Abbreviation Full entry →

lambda sign

Professional Technical IVT

Ultrasound marker indicating dichorionic twin pregnancy, appearing as a triangular projection of placental tissue into t...

Technical Term Full entry →

laser photocoagulation

Professional Technical IVT

Endoscopic laser treatment to ablate vascular connections in twin-twin transfusion syndrome.

Technical Term Full entry →

Leopold maneuvers

Intermediate Technical IVT

Four-step systematic palpation technique used to determine fetal position, presentation, and engagement during pregnancy...

Technical Term Full entry →

macrosomia

Intermediate Technical IVT

Excessive fetal growth resulting in birth weight above the 90th percentile or exceeding 4,000-4,500 grams.

Technical Term Full entry →

MCA PSV

Professional Technical IVT

Middle Cerebral Artery Peak Systolic Velocity - a Doppler measurement used to assess fetal anemia and blood flow.

Abbreviation Full entry →

MCDA

Professional Technical IVT

Monochorionic Diamniotic - twin pregnancy sharing one placenta but with separate amniotic sacs.

Abbreviation Full entry →

MFMU

Professional Technical IVT

Maternal-Fetal Medicine Units Network, a research consortium conducting clinical trials in maternal-fetal medicine.

Abbreviation Full entry →

middle cerebral artery Doppler

Professional Technical IVT

Ultrasound assessment of blood flow in the fetal middle cerebral artery to detect anemia or growth restriction.

Technical Term Full entry →

mirror syndrome

Professional Technical IVT

Maternal condition that mirrors fetal hydrops with edema and hypertension.

Technical Term Full entry →

monoamniotic twins

Professional Technical IVT

Identical twins sharing both placenta and amniotic sac, representing the highest-risk twin pregnancy.

Technical Term Full entry →

monochorionic diamniotic

Advanced Technical IVT

Type of twin pregnancy where twins share a placenta but have separate amniotic sacs, carrying higher complication risks.

Technical Term Full entry →

mosaicism

Advanced Technical IVT

Genetic condition where an individual has cells with different chromosomal compositions.

Technical Term Full entry →

MSAFP

Professional Technical IVT

Maternal serum alpha-fetoprotein test used to screen for neural tube defects and chromosomal abnormalities during pregna...

Abbreviation Full entry →

multifetal pregnancy reduction

Professional Formal IVT

Selective termination procedure to reduce the number of fetuses in high-order multiple pregnancies to improve outcomes f...

Technical Term Full entry →

neural tube defect

Intermediate Technical IVT

Congenital malformation resulting from failure of neural tube closure during early embryonic development, including spin...

NTD
Technical Term Full entry →

NIPT

Intermediate Technical IVT

Non-invasive prenatal testing using maternal blood to screen for chromosomal abnormalities.

Abbreviation Full entry →

non-stress test

Intermediate Technical IVT

Antepartum fetal surveillance test that monitors fetal heart rate patterns in response to fetal movement.

Technical Term Full entry →

Nuchal Fold

Intermediate Technical IVT

The thickness of soft tissue at the back of the fetal neck measured on ultrasound as a marker for chromosomal abnormalit...

Technical Term Full entry →

nuchal translucency

Intermediate Technical IVT

First-trimester ultrasound measurement of fluid behind the fetal neck used for Down syndrome screening.

NT
Technical Term Full entry →

OEIS complex

Professional Technical IVT

Rare congenital disorder involving omphalocele, exstrophy of bladder, imperforate anus, and spinal defects.

Technical Term Full entry →

oligohydramnios

Advanced Technical IVT

Abnormally low levels of amniotic fluid during pregnancy.

Technical Term Full entry →

omphalocele

Intermediate Technical IVT

A congenital defect where abdominal organs herniate through the umbilical ring and remain covered by a membrane.

Technical Term Full entry →
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