Antepartum haemorrhage is defined
and before delivery.
In the past viability was considered to b
neonatal survival, this has been change
22 weeks by the WHO.
PLACENTA PRAEVIA:
is defined as a placenta located partly
overlying or in close proximity.
Risk Factors
• Previous history of placenta previa (12
• Multiparity and increased maternal ag
• H/O any previous uterine surgery—like
• Previous uterine curettage
• Increased placental size as in multifeta
• Succenturiate lobe
• Smoking
Pathophysiology Placenta previa:
is more commonly seen in early gestation an
uterus, the placenta is lifted into the upper u
This mechanism of placental migration is po
placenta towards a better vascularized upp
Abnormal implantation of the placenta may
most commonly as aresult of a previous ces
and 3rd trimesters is less likely to occur if:
1.The placenta is posterior.
2. The placenta covering the internal os.
3. There is a previous caesarean section
and before delivery.
In the past viability was considered to b
neonatal survival, this has been change
22 weeks by the WHO.
PLACENTA PRAEVIA:
is defined as a placenta located partly
overlying or in close proximity.
Risk Factors
• Previous history of placenta previa (12
• Multiparity and increased maternal ag
• H/O any previous uterine surgery—like
• Previous uterine curettage
• Increased placental size as in multifeta
• Succenturiate lobe
• Smoking
Pathophysiology Placenta previa:
is more commonly seen in early gestation an
uterus, the placenta is lifted into the upper u
This mechanism of placental migration is po
placenta towards a better vascularized upp
Abnormal implantation of the placenta may
most commonly as aresult of a previous ces
and 3rd trimesters is less likely to occur if:
1.The placenta is posterior.
2. The placenta covering the internal os.
3. There is a previous caesarean section
