In Children with Tetralogy of Fallot,why Does Unoxygenated Blood Enter

question 13

Multiple Choice

In children with tetralogy of Fallot,why does unoxygenated blood enter the systemic circulation?

• A)The aorta and pulmonary artery have exchanged positions.
• B)Pulmonary stenosis changes the ventricular pressures.
• C)The left ventricular wall has hypertrophied.
• D)The septal defect allows exchange of blood between the atria.

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