Final answer:
In coarctation of the aorta, blood pressure is typically higher in the arms than in the legs due to a pressure gradient caused by the narrowing of the aorta.
Step-by-step explanation:
In coarctation of the aorta, the blood flow beyond the narrowing (coarctation) is restricted, which typically results in higher blood pressure in the upper body, including the arms, compared to the lower body, including the legs. This is because the narrowing creates a pressure gradient with higher pressure before the coarctation and lower pressure after it. Surgical treatment or angioplasty may be necessary to correct the narrowing and improve blood flow, thus normalizing the pressure differential between the upper and lower extremities.