Vasa Previa

Question 1

Vasa (vessels) Previa (way out) is a condition in which fetal blood vessels cross or run near the internal opening of the uterus. What is the estimated incidence of Vasa Previa?

1 - 0.6 per 1000
2 - 6 per 1000
3 - 60 per 1000
4 - 6000 per 1000

Answer 1

1 - 0.6 per 1000

Question 2

What distance do the blood vessels need to be in relation to the internal os to be diagnosed with vasa previa?

1 - 0.2cm
2 - 2mm
3 - 2cm
4 - 22mm

Answer 2

3 - 2cm

Question 3

Typically how is vasa previa diagnosed?

1 - vaginal examination
2 - MRI
3 - transvaginal ultrasonography
4 - abdominal examination

Answer 3

3 - transvaginal ultrasonography

Question 4

Which of the following is NOT a typical sign of vasa previa?

1 - vaginal bleeding
2 - rupture of membranes
3 - fetal bradycardia
4 - pain

Answer 4

4 - pain

• patients typically have painless bleeding

Question 5

Patients diagnosed with vasa previa are typically monitored more closely prenatally. At what week will patients receive additional scans?

1 - 24-26 weeks
2 - 28-30 weeks
3 - 32-34 weeks
4 - 34-39 weeks

Answer 5

2 - 28-30 weeks
- typically twice a week

Question 6

If there is suspicion that the baby may need to be delivered prematurely in vasa previa, what should the mother be given to help develop the babies lungs?

1 - corticosteroids
2 - NSAIDs
3 - asprin
4 - methotrexate

Answer 6

1 - corticosteroids

Question 7

Emergency caesarean should be performed in vasa previa if all of the following occur, EXCEPT which one?

1 - Premature rupture of the membranes occurs.
2 - Vaginal bleeding continues.
3 - Fetal status is non-reassuring
4 - Maternal elevated heart rate

Answer 7

4 - Maternal elevated heart rate

Question 8

At what week is it recommended that patients with vasa previa should have an elective caesarian?

1 - 24-26 weeks
2 - 28-30 weeks
3 - 32-34 weeks
4 - 35-36 weeks

Answer 8

4 - 35-36 weeks