Final answer:
The nurse would perform an assessment of blood pressure to detect vascular complications associated with Cushing's syndrome.
Step-by-step explanation:
The nurse would perform an assessment of blood pressure to detect vascular complications associated with Cushing's syndrome. High blood pressure is a common complication of Cushing's syndrome and can lead to vascular damage such as atherosclerosis or an increased risk of heart attack or stroke. By monitoring and assessing blood pressure regularly, the nurse can identify and manage any vascular complications.