when is the first trimester
0-12 weeks
when is the second trimester
13-27 weeks
when is the third trimester
28-40 weeks
What is the ideal baby presentation in utero
Presentation - head first
Lie - longitudinal
Placenta - upper segment
Attitude - Flexed vertex
What is gravidity
Number of pregnancies regardless of outcome - including current
what is parity
number of pregnancies beyond 24 weeks - not including current
what gestation is surfactant produced
34/35 weeks - comptently mature to do so then - but can be as early as 24 weeks - just not large amounts
If expected delivery before 35 weeks what can be done to help the lungs
give the mum corticosteroids
Give baby surfactant after birth
what hormone produced from the placenta increases the risk of DM
hPL (human placental lactogen)
what cardiovascular changes are seen for mum in pregnancy
decreased BP (increased CO but decreased TPR)
how should pregnant women sleep
on their side ( avoid IVC obstruction)
what haematological changes occur in pregnancy
anaemia
increased WCC
increased d-dimer
what GI changes in pregnancy
dysmotility = constipation and GORD
what happens to your immunity in pregnancy
decreases
what endocrine changes occur in pregnancy
poorer glycaemic control
what urology changes in pregnancy
increased renal excretion + increased UTI risk
what visual changes can be seen in pregnancy
enlarged stomach
linea nigra
striae gravidarum
polymorphic eruptions of pregnancy
when is the booking scan
8-12 weeks
what is checked for at the booking scan
Hep B
HIV
Sickle cell
Thalassaemia
Syphillis
what is in the combined test
USS - nuchal translucecny
beta-hCG
PAPP-A
what is tested for in the combined test
Trisomy 21
Trisomy 18
Trisomy 13
what combined test results might be seen in Trisomy 21
raised hCG
Low PAPP-A
>6 mm NT
when is the anomaly scan done
18-20 +6 weeks
what is checked on the anomaly scan
CHD
NTD
gastroschisis + omphalocele
Placenta praevia
+/- cleft lip, renal agenesis, anencephaly