Risk factors for placenta previa

Risk factors for placenta previa include having had previous pregnancies or cesarean sections, since scar tissue may affect placental placement. Older maternal age, especially over 35, increases risk. Multiple pregnancies, like twins, can also contribute. Women with uterine abnormalities or certain medical conditions such as high blood pressure are at higher risk. Smoking and smoking-related health issues can also play a role. These factors can influence where the placenta attaches in the uterus, increasing the chance it covers or is near the opening of the cervix, potentially complicating delivery.