## **Core Concept**
Dengue Shock Syndrome (DSS) is a severe form of dengue infection characterized by significant plasma leakage, leading to hypovolemia and shock. The management of DSS primarily focuses on fluid resuscitation to restore circulating volume and maintain adequate tissue perfusion.

## **Why the Correct Answer is Right**
The correct approach for immediate treatment of peripheral circulatory failure in Dengue Shock Syndrome is aggressive fluid resuscitation. **I.V. crystalloid infusion** is recommended as the first-line treatment to rapidly expand intravascular volume, improve cardiac output, and restore tissue perfusion. Crystalloids are preferred over colloids due to their effectiveness, availability, and lower risk of adverse effects.

## **Why Each Wrong Option is Incorrect**
- **Option A: I.V. Dextrose Saline** - While dextrose saline can provide some volume expansion, it is not the preferred initial fluid for resuscitation in DSS. Dextrose saline has a limited role and is not sufficient for correcting hypovolemia.
- **Option B: I.V. high dose of Dexamethasone** - Dexamethasone is a corticosteroid that may have some benefits in certain types of shock, but it is not the immediate treatment for peripheral circulatory failure in DSS. The primary treatment is fluid resuscitation.
- **Option D: I.V. Dopamine + Dobutamine** - While inotropes like dopamine and dobutamine may be considered in certain cases of shock that are unresponsive to fluid resuscitation, they are not the first-line treatment for DSS. Fluid resuscitation with crystalloids is the initial step.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the management of DSS involves a stepwise approach, starting with fluid resuscitation using crystalloids. The World Health Organization (WHO) guidelines emphasize the importance of early recognition and aggressive fluid therapy to prevent progression to severe shock and multi-organ failure.

## **Correct Answer:** C. I.V. crystalloid infusion