Major causes and factors occurs in obstetric terms or during labor multiparous woman with a large baby a short tumultuous labor use of uterine stimulants occurred during abortion amnioinfusion ■ Amniocentesis caesarian section a placenta accreta ■ ruptured uterusMajor causes and factors ◼ occurs in obstetric terms or during labor ◼ multiparous woman with a large baby ◼ a short tumultuous labor ◼ use of uterine stimulants ◼ occurred during abortion ◼ amnioinfusion ◼ Amniocentesis ◼ caesarian section ◼ placenta accreta ◼ ruptured uterus