A nurse is caring for a child with coarctation of the aorta. On assessment the nurse finds stronger pulses in the upper extremities than in the lower extremities. The blood pressure In the child's arms is higher than in the child's legs. Which of the following is a priority Intervention the nurse should implement?

A. Antibiotics are not indicated for coarctation of the aorta. B. Monitoring is important, but the immediate action is to notify the cardiologist for further intervention. C. Balloon angioplasty is a potential treatment for coarctation of the aorta but would be decided by the cardiologist after assessment. D. Coarctation of the aorta causes a narrowing of the aorta, leading to differences in blood pressure and pulse strength between the upper and lower extremities. The nurse should notify the cardiologist for further evaluation and management.