In an acute adrenal crisis, which drug is the treatment of choice after establishing IV access?

• A. Hydrocortisone succinate
• B. Dexamethasone
• C. Fludrocortisone
• D. Methylprednisolone

Answer: (A)

In acute adrenal crisis the immediate goal is rapid replacement of cortisol with a glucocorticoid that also provides mineralocorticoid support. Hydrocortisone succinate given IV fits this need because it offers strong glucocorticoid activity to treat the cortisol deficiency and also enough mineralocorticoid effect to help with blood pressure, sodium retention, and hemodynamic stability. This dual action is crucial in crisis, where hypotension and electrolyte disturbances are common.

Dexamethasone and methylprednisolone are potent glucocorticoids but have minimal mineralocorticoid activity, so they don’t address the mineralocorticoid deficiency as well and aren’t ideal for first-line crisis management. Fludrocortisone provides mineralocorticoid effects but little glucocorticoid activity, making it unsuitable as the initial replacement during an acute crisis when cortisol deficiency is the primary issue. Hydrocortisone not only replaces cortisol but also supports hemodynamics and electrolyte balance, making it the treatment of choice after securing IV access.