Complications can include:
gestation.If placenta previa occurs over a previous uterine scar, the villi may invade
into the deeper layers of the decidua basalis and myometrium, resulting in
intractable bleeding requiring cesarean hysterectomy.
Profound hypotension can cause anterior pituitary necrosis (Sheehan's
syndrome) or acute tubular necrosis.http://ebookobgyne.net