Transcript Complex Heart Defects Tricuspid Atresia Hypoplastic Left Heart

Complex Heart Defects
Tricuspid Atresia
Hypoplastic Left Heart
Single Ventricle
Overview of Fetal Circulation
RIGHT ATRIUM
LEFT ATRIUM via the
Foramen Ovale.
AORTA
http://www.packardchildrenshospital.org/health/hrnewborn/pda.htm
BODY
RIGHT ATRIUM
RIGHT VENTRICLE
PULMONARY
ARTERY
AORTA
via Ductus Arteriosus
http://www.packardchildrenshospital.org/health/hrnewborn/pda.htm
General Warning Signs
Cyanosis
Low blood Pressure
difficulty breathing
feeding problems
poor weight gain
pinkish color
Tricuspid Atresia
NO
TRICUSPID
VALVE
FORMED
=
No flow from
right atrium to
right ventricle
http://www.rch.unimelb.edu.au/cardiology/website/Library/
Tricuspid_Atresia/tricuspid_atresia.html
The Problem

Blood does not enter
right atrium easily so
blood flow to lungs is
not as effective.
Variations

Ventricular Septal
Defect (VSD):
a hole between the left and right
atriums helps.
NO VSD

Ductus Arteriosus
has NOT Closed yet.
Left Ventricle
Aorta
Pulmonary
Artery
Body
Detection of Tricuspid Atresia
CYANOSIS
LOW SATURATION
Variations of Tricuspid Atresia
TRANSPOSITION
Hypoplastic Left Heart

Poorly formed Left
Side of Heart.

One of the most
severe heart
defects.
Left Atrium
Right Atrium
Right Ventricle
Pulmonary Artery
Lungs
Aorta (via Ductus
Arteriosus)
Body
If untreated… survival is
impossible
Closed Ductus
Arteriosus
=
Death
Warning Signs
Pale Colored
Rapid Breathing
Difficulty Breathing
Difficulty Feeding
Single Ventricle
 No
ventricular
septum
Type of Single Ventricle Defect:
Balanced Circulation

When pulmonary
artery has a small
obstruction: a little
narrowed.
Blood flow to the
aorta and
pulmonary artery
are equal.
Warning Signs
Equal Saturation Levels in
Aorta and Pulmonary Artery
CYANOSIS
Obstructed Pulmonary Artery
Thickened
Pulmonary Valve,
other obstruction

Single Ventricle
BODY
LUNGS
RA
LA
MEANS:
More blood to
AORTA/BODY.
WARNING SIGNS
CYANOSIS
Normal Pulmonary Artery
Single Ventricle
BODY
LUNGS
RA
LA

MUCH MORE
BLOOD FLOWS
TO LUNGS
EISENMEYER REACTION:
Blood vessel’s reaction to increased blood
flow.
Normal Blood
Vessel
Narrowed Blood
Vessel
Blocked Blood
Vessel
Warning Signs

This is much harder to detect
Pinkish color
Normal Coloring
CYANOSIS
32,000 babies are born each year
with heart defects
Why?
No one knows for sure
 heredity
 viral infections during pregnancy
 drugs
 alcohol
 Down’s syndrome
