Screening Procedures for Genetic Abnormalities Flashcards
peripheral venous blood or scraped cells (buccal area)
Karyotyping
assesses alpha-fetoprotein (AFP)
assesses alpha-fetoprotein (AFP)
chorionic villi (placenta) for DNA analysis Done as early as 5 weeks AOG
Chorionic Villi Sampling
WOF: vaginal bleeding, chills, and signs of infection Rh negative: give RhoGAM to prevent isoimmunization
Chorionic Villi Sampling
withdrawal of amniotic fluid through the abdominal wall for analysis
amniocentesis
“cordocentesis”
Percutaneous Umbilical Cord Blood Sampling
removal of blood from the fetal umbilical cord at about 17 weeks AOG using amniocentesis technique
percutaneous Umbilical Cord Blood Sampling
Magnetic Resonance Imaging (MRI) and ultrasound are used to assess for general size and structural disorders of
the internal organs, spine, or limbs
Fetal Imaging
insertion of a fiberoptic fetoscope through a small incision in the mother’s abdomen into the uterus and membranes to visually inspect the fetus for gross
abnormalities
Fetoscopy