Which of the following is NOT a characteristic of placenta previa?

• A. Painless vaginal bleeding
• B. Location in the lower uterine segment
• C. Greenish discoloration of the amniotic fluid
• D. Placenta implanted in the lower uterine segment

Answer: (C)

Placenta previa is characterized by the placenta implanting low in the uterus, over or near the cervix, which leads to painless vaginal bleeding in the third trimester. The bleeding is typically bright red and the uterus remains soft and non-tender. Greenish discoloration of the amniotic fluid indicates meconium passage by the fetus, which signals fetal distress or post-term status and is not a feature of placenta previa. Therefore, greenish amniotic fluid is not a characteristic of placenta previa, making it the correct choice for NOT being a feature. The other statements—painless vaginal bleeding and placenta implanted in the lower uterine segment—are consistent with placenta previa.