Premature rupture of membranes primarily affects the mother by leading to infections. Once the membranes rupture, bacteria can easily enter the uterine cavity from the vagina, causing chorioamnionitis. Additionally, it may lead to placental abruption, as the rupture of the membranes causes a decrease in abdominal tension, thus making placental abruption more likely to occur. It also leads to an increased rate of cesarean sections, because the reduction in amniotic fluid can cause irregular uterine contractions and the umbilical cord to be easily compressed, which may endanger the fetus. The main impact on the fetus is an increased risk of preterm birth.