Chapter 14

Question 1

The most appropriate name for a single large truncal vessel is:

Answer 1

persistent truncus arteriosus

Question 2

Persistent truncus arteriosus results from:

Answer 2

failure of conotruncal ridges to fuse

Question 3

In persistent truncus arteriosus, the pulmonary arteries arise form the:

Answer 3

undivided truncus

Question 4

How many leaflets does the single valve associated with persistent truncus arteriosus usually have?

Answer 4

3

Question 5

The ductus arteriousus is absent in what percentages of cases of persistent truncus arteriosus?

Answer 5

50-75

Question 6

A right-sided aortic arch is associated with persistent truncus arteriosus in what percentage of cases?

Answer 6

30

Question 7

All of the following are sonographic findings of persistent truncus arteriosus except:

Answer 7

pulmonary stenosis

Question 8

The best sonographic views for diagnosis persistent truncus arteriosus include all of the following except:

Answer 8

subcostal four-chamber view

Question 9

The best sonographic view for determining the number of valve leaflets in the common truncal artery is:

Answer 9

short-axis view of the great vessles

Question 10

The most common genetic defect associated with persistent truncus arteriosus is:

Answer 10

DiGeorge syndrome