Baby Heart

Question 1

The fetal circulation is a ________ circulation seen only in the fetus

Answer 1

Temporary

Question 2

The fetal circulation consists of ?

Answer 2

3 seperate vessels:

• 1 single umbilical vein that carries nutrients and O2 blood to the fetus from the placenta
• 2 umbilical arteries that carry CO2 and waste in the blood from the fetus to the placenta

Question 3

Atrial septal defect

Answer 3

• Abnormal connection between the atria
• Blood flows from L to R atria accross the atrial septal defect
• Can lead to an increase volume on R side of heart with an increase in atrial and ventricular size

Question 4

Ventricular septal defect

Answer 4

• Abnormal connection between ventricles
• Most common congenital heart defect
• Blood recirculates through the pulmonary system
• Can lead to pulmonary congeston/edema and R. ventricle enlarges

Question 5

Patent ductus arteriosus

Answer 5

• Direct connection between main pulmonary artery and the aorta
• Necessary for fetus/utero to survive; circulation is supposed to settles out when born. High pressure aorta flows directly back to low pressure of pulmonary artery
• Can lead to CHF

Question 6

Truncus arteriosus

Answer 6

-Failure of embyonic trunk to divide into pulmonary arteries and aorta

Question 7

Tetralogy of Fallot

Answer 7

Made up of 4 congenital defects: (very serious)
-VSD
-Pulmonary stenosis
-R. Ventricular hypertrophy
-Overriding aorta
(blood is recieved from both ventricles)

Question 8

Coarctation of the aorta

Answer 8

Narrowing located in the thoracic aorta