abnormal growth in pregnancy Flashcards
what is SGA
birth weight <10th decile
how is SGA diagnosed
abdominal circumference (AC) or USS to estimated foetal weight
what is a low birth weight
any baby born under 2.5kg
what is Fetal growth restriction
abdo circumference or estimated foetal weight below 3rd decile (or below 10th + placental dysfunction)
RF SGA
placental dysfunction // maternal infection // congenital or chromosomal abnormality // smoking, alcohol, drugs
consequences of prematurity
Resp distress // intraventricular haemorrhage // nec enterocolitis // lung disease, hypothermia, feeding problems, infection, jaundice // retinopathy // hearing problems
when does retinopathy occur in prematurity
before 32 weeks
what is macrosomnia
baby over >90th decile // over 4.5kg
what is polyhydramnios
excess amniotic fluid
causes polyhydramnios
maternal diabetes!! // foetal anomaly // twins // virus // hydrops fetalis
signs polyhydramnios
tense, shiny bump // cant feel fetal parts // large for dates
invx polyhydramnios
USS
what is oligohydramnios
reduced amniotic fluid (<500ml at 32-36 weeks)
causes oligohydramnios
PROM // potter sequence (renal agenesis) // IUGR // post term // pre-eclampsia
RF twins
FH // increased maternal age // multigravida // IVF // afro-carribean