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Showing posts with label Fallot's tetralogy. Show all posts
Showing posts with label Fallot's tetralogy. Show all posts

What conditions are associated with Fallot's tetralogy ?

What conditions are associated with Fallot's tetralogy ?

• Right-sided aortic arch (in 30% of cases).

• Double aortic arch.

• Left-sided superior vena cava (in 10% of cases).

• Hypoplasia of the pulmonary arteries.

• ASD.
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What is the treatment for Fallot's tetralogy ?

What is the treatment for Fallot's tetralogy ?


• Total correction under the age of 1 year when there is no need for an outflow transannular patch. A
second-stage total correction can be performed when the child is over the age of 2 years.

• Blalock-Taussig shunting is performed nowadays only if the anatomy is unfavourable for a total
correction.

• Modified Blalock-Taussig shunting is the interposition of a tubular graft between the subclavian and
pulmonary arteries.

• The Waterston shunt involves anastomosis of the back of the ascending aorta to the pulmonary
artery. A Waterston shunt is performed when surgery is required under the age of 3 months because
the subclavian artery is too small for a good Blalock-Taussig shunt.

• The Potts shunt involves anastomosis of the descending aorta to the back of the pulmonary artery
(JAMA1946; 132: 627).

• The Glenn operation involves anastomosis of the superior vena cava to the right pulmonary artery.
The bidirectional Glenn procedure involves anastomosis of the superior vena cava to both pulmonary
arteries.

• Pulmonary balloon valvuloplasty is sometimes used as an alternative to surgery.
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What do you know about the embryological development of Fallot's tetralogy ?

What do you know about the embryological development of Fallot's tetralogy ? 

It arises from the anterior displacement of the canal septum, which leads to unequal partitioning of the conus at the expense of the right ventricular infundibulum and results in the obstruction of the right ventricular outflow tract and failure to close the intraventricular foramen.
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What are the complications of Fallot's tetralogy ?

What are the complications of Fallot's tetralogy ?
 

• Cyanotic and syncopal spells.
 

• Cerebral abscess (in 10% of cases).
 

• Endocarditis (in 10% of cases).
 

Strokes - thrombotic secondary to polycythaemia.
 

• Paradoxical emboli.
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What are the constituents of Fallot's tetralogy ?

What are the constituents of Fallot's tetralogy ?
 

• VSD with a right-to-left shunt.
• Pulmonary stenosis (infundibular or valvular).
• Right ventricular hypertrophy.
• Dextroposition of the aorta with it overriding the ventricular septal defect.
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