low-lying placenta
placenta within 20mm of internal cervical os
placenta praevia
placenta over internal cervical os
increases risk of
APH emergency CS emergency hysterectomy maternal anaemia preterm birth + LBW stillbirth
risk factors
prev CS prev placenta praevia older maternal age maternal smoking uterine abnormalities e.g. fibroids assisted reproduciton
when is it diagnosed
20wk anomaly scan
features
asymptomatic
scan finding
painless vaginal bleeding - APH
Mx - USSs
repeat transvaginal scans
Mx - steroids
steroids given between 34-35+6 to mature lungs given risk of preterm delivery
Mx - planning delivery
considered between 36-37wks
planned CS rewuired
Mx - emergency CS
premature labour
APH