Pre-term Labour Flashcards
define term
37 to 42 weeks
define EDD
40 wks
define pre term
<37 wks
what % births are preterm
8
what % of preterm births are elective
25
reasons for intentionally delivering someone preterm
PET
IUGR
define labour
regular contractions of uterus resulting in changes of cervix
define extreme pre term
<28 wks
define very preterm
28-32 wks
define late to moderate preterm
32 to 37 wks
when does all morbidity fall in terms of wks of gestation
32 weeks onwards
preterm labour Ix
Hx
speculum / bimanual
USS
TVUSS - cervical lengthening
CTG (contractions)
preterm labour RFs
prev preterm
twins
genital tract infections
PPROM
uterus issues - eg bicornate
cervix issues - eg LLETZ
placental issues
smoking, stress
Sx of preterm labour
dull backache
abdo tightenings
lower abdo pressure
PVB or spotting
PROM - gush or trickle
when should preterm labour be Tx (wks)
<29+6 wks
or >30 wks
why is TVUS done in preterm labour
determine cervical length - very hard
what is foetal fibronectin used for
to rule out preterm labour if its negative
what does a positive foetal fibronectin indicate
nothing, can be false positive
what causes a false positive of foetal fibronectin
sex
ROM
PVB
what does a negative foetal fibronectin indicate
unlikely to start labour in 14 days
what % of term vs preterm births have PPROM
3% term 30-40% preterm
complications associated with PPROM
neonatal sepsis
cord prolapse
lung hypoplasia
what is the average time from PPROM to birth
7 days
Ix for PPROM
speculum - look for fluid
USS estimation of amniotic fluid if neg
