Total placenta previa is defined as the placenta covering which anatomical area?

Total placenta previa is defined as the placenta covering which anatomical area?

• A. The cervical os.
• B. The internal os only.
• C. The external os only.
• D. The lower uterine segment.

Answer: (A)

Total placenta previa means the placenta implants in the lower part of the uterus and completely covers the opening of the cervix. That opening, the cervical os, is the site where the birth canal would pass through the cervix, and when the placenta fully covers it, vaginal delivery isn’t possible. This placement explains the need for planning a cesarean birth and is why placenta previa presents with painless vaginal bleeding later in pregnancy. The essential point is that the placenta sits over the cervical os, blocking the birth passage.

Total placenta previa means the placenta implants in the lower part of the uterus and completely covers the opening of the cervix. That opening, the cervical os, is the site where the birth canal would pass through the cervix, and when the placenta fully covers it, vaginal delivery isn’t possible. This placement explains the need for planning a cesarean birth and is why placenta previa presents with painless vaginal bleeding later in pregnancy. The essential point is that the placenta sits over the cervical os, blocking the birth passage.