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antenatal screening - Coggle Diagram
antenatal screening
tests/ scans
2nd ultrasound 20 weeks
urine is periodically tested
care appointment 16 weeks
1st ultrasound 10-14 weeks
blood 1st appointment
baseline to measure changes
confirmation of pregnancy 8-12 weeks
blood pressure monitoreed
blood types & rhesus disease
quadruple blood test 15-18 weeks
maternal levels of
alpha‐fetoprotein (AFP).
human chorionic gonadotropin (hCG)
unconjugated estriol (uE3)
inhibin A
down syndrome
invasive testing if indicated
chorionic villus sampling
amniocentesis.
cordocentensis
risk of miscarriage
ultra sound
used to detect abnormalities
1st & 2nd trimester
routine tool for antenatal screening
final scans
every 3 weeks from 25 weeks
ass growth through fundus height
every 2 weeks from 24-40 weeks
first scan
visible indicators
brain abnormalities
abdominal wall defects
nuchal translucency
down syndrome
turners syndrome
trisomy 18 & 13
cardiac anomalies
happens at 10-14 weeks
dating of embryo
earliest way
crown to rum length (CRL)
used to date if 1st scan is later
femur length with bi-parietal diameter or head circumference
bi-parietal diameter & head circumferences
second scan/ anomaly scan
CNS
skull
heart
GI tract
thorax
uroentisl systems
skeleton
location of placenta
vol of amniotic
18- 21 weeks