Congenital heart disease

Question 1

Most critical time for fetal heart development

Answer 1

3-8 weeks

Question 2

What is the purpose of the ductus arteriosus

Answer 2

to shunt deoxygenated blood from pulmonary artery to the aorta that gives off the umbilical arteries to the placenta

Question 3

What two shunts carry oxygenated blood to the fetus

Answer 3

Ductus venosus and foramen ovale

Question 4

The foramen ovale closes 2 weeks after birth. t or f

Answer 4

The foramen ovale closes just after birth following the baby’s first breath this causes a decrease in pulm resistance and increased blood flow
there is then an increase in left atrial pressure and the closure of the foramen ovale

Question 5

Ductus arteriosus closes just after after birth due to increased PG? t or f

Answer 5

increased o2, decreased PG causing duct closure

Question 6

VSD is the most common lesion is it cyanotic or acyanotic?

Answer 6

Acyanotic

Question 7

Cyanptic CHD:Anaemic patients may not become cyanotic even in the presence of marked aterial desaturation

Answer 7

True

Question 8

What is the absolute quantity if deoxyhb needed to say a baby is cyanotic?

Answer 8

5g/dL

Question 9

Patients with polycythemia develop cyanosis at lower levels of HB

Answer 9

False they become cyanotic at higher levels