Complication of placenta previa.

Antepartum: 
o Malpresentation 
o Cord prolapse 
o Premature labor 
o Early rupture of membranes 
Intrapartum: 
o Slow dilation of cervix 
o Intrapartum hemorrhage 
o Increased incidence of operative interference 
Postpartum: 
o Post partum hemorrhage 
o Retained placenta