If you have had a cesarean section, it is important to monitor the thickness of the uterine incision during your next pregnancy. A normal uterine incision thickness is greater than 3mm or more. If the uterine incision is too thin, there is an increased risk of uterine rupture during pregnancy, which is the main risk during a second pregnancy with a scarred uterus. In addition to the thickness of the incision, it is also important to look at the continuity of the incision. If the thickness is normal and the continuity of the incision is good, the probability of uterine rupture is low. If the thickness is thin and there is a break or poor continuity at the incision, rupture is likely to occur, which requires hospitalization for observation and may require early termination of the pregnancy.