Antepartum Haemorrhage (APH) Flashcards
what is APH?
bleeding after 24 weeks and before 2nd stage of labour (delivery of the baby)
quantifying APH
spotting
minor= <50ml
major= 50-1,000ml, no shock
massive= >1,000ml and/or shock
causes
placental abruption placental praevia placental accrete uterine rupture vasa praevia
what is placental abruption?
separation of a normally implanted placenta
blood escapes into amniotic sac and there is interruption of placental circulation
what does placental abruption cause?
couvelaire uterus (haematoma bruised uterus)
risk factors for placental abruption
PET trauma drugs abnormal placenta polyhydramnios
presentation of placental abruption
severe continuous abdominal pain (backache if posterior placenta)
painful bleeding
preterm labour
maternal collapse
what is a potential cause of placental abruption
in association with trauma
diagnosis of placental abruption
large tense uterus
woody abdomen
unable to feel foetal parts
foetal demise
management of placental abruption
resuscitate mother
delivery of baby= urgent C/S or IOL by amniotomy
what is placental praevia?
placenta lies over the internal os
define a low-lying placenta
after 16 weeks the edge is <20mm from the internal os
what increases the risk of placental praevia?
C/S
presentation of placental praevia
painless bleeding >24 weeks (3rd trimester)
usually unprovoked but can be triggered by coitus
foetal movements present/ no foetal stress
diagnosis of placental praevia
screening at foetal anomaly scan (18-20 weeks)
re-scanned at 32 and 36 weeks
do NOT perform vaginal or PR exam
CTG normal