Second Trimester (weeks 13-26)
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14 Terms
Lab screening is done at what weeks and from what
15-20 weeks. Maternal serum (blood sample from mother)
Quadruple screen: hCG, AFP, estriol, inhibin-A
what is produced by placenta and is shown in lab screening from maternal serum?
hCG, estriol, and inhibin-A are produced by the placenta.
AFP is produced by the?
fetus
AFP by the fetus “Open” or protruding fetal abnormalities will show
elevated AFP.
Most common cause of abnormal serum screening is
incorrect dating
Longitudinal lie means
Baby is parallel to mother
Cephalic AKA Vertex means
Head presenting or closest to cervix
Breech means
Complete: Feet first
Frank: Buttocks closest to cervix
Footling: One leg closest to cervix
Transverse lie means
fetus lie is perpendicular to mother. Head is maternal’s right or left
In an axial view of the fetal abdomen
the fetal lie is perpendicular to transducer position
LONG baby and clockwise
Cephalic
LONG baby and counter
Breech
TRANS baby and clockwise
Head right
TRANS baby and counter
Head left