Pregnancy Diagnostics Glossary

Significant difference in fetal size between twins, typically defined as >20% weight difference, indicating potential co...

Ultrasound technique measuring blood flow velocity in fetal and maternal vessels to assess placental function and fetal...

Fetal blood vessel that shunts oxygenated blood from the umbilical vein directly to the heart.

Estimated fetal weight, calculated measurement derived from ultrasound biometry to assess fetal size and growth.

The descent of the fetal presenting part to the level of the ischial spines in the maternal pelvis.

Traditional obstetric term for the calculated due date, now largely replaced by 'estimated date of delivery.'

Significant difference in estimated weights between twins, typically defined as greater than 20% difference.

Structural or chromosomal abnormality detected during prenatal screening or diagnostic testing.

Ultrasonic measurement of fetal anatomical structures to assess gestational age, growth, and development.

Specialized ultrasound examination focusing on detailed assessment of fetal cardiac anatomy and function during pregnanc...

Glycoprotein found at the interface between fetal membranes and maternal decidua, used as a biomarker for preterm labor...

Statistical ranking of fetal size measurements compared to gestational age-specific reference ranges.

Continuous or intermittent assessment of fetal cardiac activity during pregnancy or labor to evaluate fetal well-being.

Maternal assessment of fetal activity patterns used to monitor fetal well-being, typically in the third trimester.

Early embryonic structure visible on ultrasound, representing the developing fetus before distinct anatomical features a...

Process by which intrauterine environment permanently alters fetal development and adult health outcomes.

Selective termination of one or more fetuses in multiple pregnancies to improve outcomes for remaining fetuses.

Internal monitoring device attached directly to the fetal scalp to obtain continuous, high-quality fetal heart rate trac...

Measurement of the presenting part's descent through the maternal pelvis relative to the ischial spines.

Continuous electronic monitoring record of fetal heart rate patterns during labor and delivery.

Fluorescence in situ hybridization; rapid genetic test using fluorescent probes.

First trimester screening combining maternal age, ultrasound measurements, and biochemical markers to assess chromosomal...

Clinical evaluation to determine the duration of pregnancy using various dating methods and fetal measurements.

Malignant tumor arising from trophoblastic tissue that can occur after any pregnancy event.