Approach to women with previous rupture of the uterus or an unknown uterine scar in pregnancy

The incidence of rupture in an unscarred uterus is reported as 1 in 10,000 births, whereas in women with one previous lower segment scar it is approximately 0.2% and 1.5%. Uterine rupture occurs in 4%–9% of women with previous classic or T-shaped incisions. This chapter discusses risk factors and counseling about risk of rupture in subsequent pregnancy. The importance of critical review of previous operative records and timing of delivery accordingly has been covered in detail. Literature about previous uterine rupture in pregnancy and outcomes has been reviewed. It is evident from the literature that subsequent pregnancy outcome can be optimized in women with prior uterine rupture or dehiscence.