A nurse is completing an assessment of a newborn, including obtaining blood pressure measurements at each extremity. Which of the following findings suggests coarctation of the aorta?

A. Elevated systolic blood pressure in the upper extremities and low systolic blood pressure in the lower extremities. Classic finding in coarctation of the aorta due to narrowing distal to the branches supplying the arms: higher arm BPs and lower leg BPs. B. Elevated systolic blood pressure in the upper extremities and elevated systolic blood pressure in the lower extremities. Generalized hypertension would raise both; not typical of coarctation. C. Low systolic blood pressure in the upper extremities and elevated systolic blood pressure in the lower extremities. This pattern is the reverse of coarctation and is not consistent with that diagnosis. D. Low systolic blood pressure in the upper extremities and low systolic blood pressure in the lower extremities. Systemic hypotension would lower both; not the expected finding with coarctation.