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Valenti hypothesized in 1972 that the procedure he used to obtain fetal tissue could be used to obtain fetal blood, and in 1973, he was able to sample fetal vessels; fetoscopy was used and refined between 1974 and 1983 as a prenatal test to determine fetal status as well as obtain fetal blood and perform transfusions in some cases. [7]
Obstetrics and gynaecology (also spelled as obstetrics and gynecology; abbreviated as Obs and Gynae, O&G, OB-GYN and OB/GYN [a]) is the medical specialty that encompasses the two subspecialties of obstetrics (covering pregnancy, childbirth, and the postpartum period) and gynaecology (covering the health of the female reproductive system ...
Chorionic villus sampling (CVS), sometimes called "chorionic villous sampling" (as "villous" is the adjectival form of the word "villus"), [1] is a form of prenatal diagnosis done to determine chromosomal or genetic disorders in the fetus.
The test is based on differences between maternal and fetal hemoglobin.Maternal blood contains adult hemoglobin composed of two alpha and two beta subunits (aka hemoglobin A or HbA; i.e., normal adult hemoglobin).
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
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