An unresponsive 26-year-old male is found in an alley outside a bar. His skin is pale and clammy. His vital signs are P 118, R 16, BP 104/82, and SpO2 is 95% on room air. You should suspect:

• A. Distributive Shock
• B. Head Trauma
• C. Hypovolemic Shock
• D. Intra-Thoracic Bleeding

Answer: (C)

This question is about recognizing shock from the body’s compensatory response to low circulating volume. When a person loses blood, the body pulls blood away from the skin to preserve perfusion to vital organs, so the skin becomes cool, pale, and clammy. The heart then beats faster to maintain blood pressure and perfusion, which is why the pulse is elevated even though blood pressure may still appear relatively normal in early stages. In this case, the unresponsive patient has pale, cool, clammy skin and a fast pulse with only a modest blood pressure reduction, which fits hypovolemic shock from blood loss.

Distributive shock would more often present with warm or flushed skin due to vasodilation, not cool and clammy. Head trauma would typically show neurological signs or a mechanism of injury suggesting brain involvement. Intra-thoracic bleeding is a potential cause of hypovolemia, but the overall presentation centers on reduced circulating volume and systemic hypoperfusion rather than a primary chest injury, making hypovolemic shock the best match.