During the newborn assessment, a systolic blood pressure that is higher in the legs than in the arms is suggestive of which of the following findings?
1. Cardiac arrhythmia
2. Coarctation of the aorta
3. Chromosome abnormality
4. A normal finding for an infant
4
Rationale:
1. A cardiac arrhythmia would decrease cardiac output, and would result in lower pressure in all extremities.
2. Coarctation of the aorta would result in lower pressures in the legs than in the arms.
3. A chromosomal abnormality would not be directly associated with blood pressure differences.
4. This is a normal finding in the child, because blood takes the path of least resistance, making pressures lower in the arms than legs.
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