Definition
Pregnancy more than 42 wks from the onset of LMP.
Epidemiology
12% of all pregnancies
High incidence in anecephalic fetus
Placenta sulfate deficiency
Extra uterine pregnancy.
Complication
• Perinatal mortality 3 times higher
• Fetal post maturity ( dys maturity) syndrome
• macrosomia results in:
- abnormal labor
- shoulder dystocia
- birth trauma
- pph
- increased incidence CS.