Placenta praevia and accreta and its relationship with previous caesarean section

Objective: a prospective study was undertaken to determine the relationship between placenta previa,previous caesarian section and placenta praevia accreta. setting and duration: a study was conducted in one year from january 2010 to december 2010 results: total number of patients who delivered was 4120 out of which 185 patients had previous history of cesarean section (previous1 or 2more). total 42 patients had major degree of placenta praevia (type iii,iv). 28 patients of placenta praevia were those who have no previous caesarean section or unsacred preavauterus and 14 patients had previous caesarean section. placenta praevia incidence turned out to be 7.56% in cases of previous caesarean section and (0.73%) in cases of unscarred uterus. in patients with placenta previa and previous caesarean section 9(64.2%) compared with 39(10.7%) were having placenta accreta. there was only one maternal death in placenta praevia with unscarred uterus group.