Women in risk groups

• Those with painless bleeding (at any stage in pregnancy)

• Those with low-lying placenta or placenta praevia

• In-vitro fertilization pregnancies

• Multiple pregnancies

• Those with bi-lobed or succenturiate-lobed placenta (fig.1)

Fig 1: Courtesy of the www.theFetus.net © Francois Manson

• Those with velamentous insertion of the cord (fig.2)

• History of previous uterine surgery including D&C or C-Section