Surgery In a patient, there are elevated plasma coisol levels. Dexamethasone fails to suppress coisol secretion. What is the next step in management? A Serum ACTH B 24 hour urinary metanephrines C 24 hour urinary VMA D Serum DHEAS 💡 Explanation In a patient, there are elevated plasma coisol levels. Dexamethasone fails to suppress coisol secretion. What is the next step in management? ✓ Correct Answer: A. Serum ACTH