A nurse who works on a pediatric cardiology unit of a hospital is providing care for an infant with a diagnosis of tetralogy of Fallot
Which of the following pathophysiologic results should the nurse anticipate?
A)
There is a break in the normal wall between the right and left atria that results in compromised oxygenation.
B)
The aortic valve is stenotic, resulting in increased afterload.
C)
Blood outflow into the pulmonary circulation is restricted by pulmonic valve stenosis.
D)
The right ventricle is atrophic as a consequence of impaired myocardial blood supply.
Ans:
C
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Tetralogy of Fallot is marked by obstruction or narrowing of the pulmonary outflow channel, including pulmonic valve stenosis, a decrease in the size of the pulmonary trunk, or both. The characteristic septal defect is ventricular, not atrial. Aortic valve stenosis and right ventricular atrophy are not associated with the diagnosis.
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