## **Core Concept**
The question tests the management of acute adrenal insufficiency, particularly in the context of a patient with advanced tuberculosis, which may involve adrenal gland involvement (e.g., adrenal tuberculosis). Acute adrenal insufficiency, also known as adrenal crisis, is a life-threatening condition that requires immediate treatment. The management involves replacement of deficient hormones.

## **Why the Correct Answer is Right**
The correct approach to treating acute adrenal insufficiency involves administering both glucocorticoids and mineralocorticoids. **Hydrocortisone (a glucocorticoid)** is typically given to replace the deficient cortisol, providing both glucocorticoid and some mineralocorticoid activity. **Fludrocortisone (a mineralocorticoid)** may also be needed for longer-term management to replace aldosterone, especially if the patient has primary adrenal insufficiency (Addison's disease) and significant mineralocorticoid deficiency. However, in the acute setting, hydrocortisone's mineralocorticoid activity suffices. The combination helps restore blood pressure, electrolyte balance, and other vital functions.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it lacks a mineralocorticoid component. While hydrocortisone can provide some mineralocorticoid activity, in cases of severe adrenal insufficiency, especially with likely significant adrenal damage from tuberculosis, additional mineralocorticoid support might be crucial.
- **Option B:** This option might seem plausible but typically, dexamethasone, a potent glucocorticoid, is used in emergency situations when hydrocortisone is not available. However, it does not provide mineralocorticoid activity and is generally not the first choice for initial treatment if hydrocortisone is available.
- **Option D:** This option is incorrect because it only includes a mineralocorticoid (fludrocortisone) without a glucocorticoid, which would not adequately address the cortisol deficiency.

## **Clinical Pearl / High-Yield Fact**
In the setting of acute adrenal insufficiency, especially if the patient presents with shock, **hydrocortisone** is the drug of choice for immediate treatment. A dose of 100 mg of hydrocortisone IV is often given initially, followed by 50-100 mg every 6 hours. This approach helps to rapidly replenish cortisol levels, which are critical for maintaining vascular tone and responding to stress.

## **Correct Answer:** C. Hydrocortisone and Fludrocortisone.