1. The Fetal and Newborn Heart

2. The Normal Fetal and Newborn Heart
Fetal Newborn

3. The Normal Fetal and Newborn Heart
• Fetal heart circulation bypasses the lungs
• Normally, fetal heart circulation changes to
newborn circulation with the baby’s first
breath
• The ductus arteriosis and foraman ovale close
to allow circulation to the lungs
• Normal newborn heart circulation is the same
as in the child and adult

4. The Normal Fetal and Newborn Heart

5. Abnormal Newborn Heart
Patent Ductus
Arteriosis: the
ductus
arteriosis fails
to close at birth

6. Abnormal Newborn Heart
Aortic
Stenosis: a
narrowing of
the aorta

7. Abnormal Newborn Heart
Atrial
Septal
Defect:
the atrial
septum is
not intact

8. Abnormal Newborn Heart
Atrioventricular
Septal Defect: the
atrial and
ventricular
septums are not
intact

9. Abnormal Newborn Heart
Hypoplastic Left
Heart: the left
ventricle is
underdeveloped

10. Abnormal Newborn Heart
Tetrology of Fallot:
consists of 4 cardiac
defects