Module 8 (Exam 3) Placenta Previa

Question 1

Placenta Previa

Answer 1

Implantation of the placenta in the lower uterus. Occurs in about 1 out of 300 births.

Question 2

Placenta Previa is more common in:

Answer 2

1. Advanced maternal age
2. Multiparity
3. Previous c-section, currettage, or previa
4. Afrcian or Asian race
5. Smoking or cocaine use (vasoconstrictor)
6. Male baby

Question 3

Marginial (low lying)

Answer 3

Lower border of placenta is close to internal cervical os (more than 3 cms)

Question 4

Partial

Answer 4

Lower border is within 3cm of the internal cervical os but does NOT completely cover the os

Question 5

Total

Answer 5

Placenta completely covers internal cervical os

Question 6

Placenta migration

Answer 6

Placenta moves away from internal cervical os and fetus and uterus grows

only about 10% of placenta previa remain a previa at term

Question 7

Signs and Symptoms of Placenta Previa

Answer 7

1. Sudden onset of PAINLESS vaginal bleeding that is caused by tearing of the placental villi from the thinning lower uterine segment and dilating cervix

Question 8

Therapeutic Management of Placenta Previa

Answer 8

1. Confirm previa VIA ultrasound
2. NO manual vaginal exams
3. Wait and see what happens
4. Monitor bleeding
5. Home Care (if emergency services are available): fetal kick counts, monitor for bleeding and/or contractions, NST, pelvic rest
6. Hosptial Care: EFM, c-section, Rhogam