Which statement best differentiates neurogenic shock from hypovolemic shock in trauma?

• A. Neurogenic shock presents with hypotension and bradycardia with warm dry skin; hypovolemic shock presents with tachycardia and cool clammy skin with poor perfusion.
• B. Neurogenic shock presents with tachycardia and cool clammy skin; hypovolemic shock presents with hypotension and warm dry skin.
• C. Neurogenic shock presents with bradycardia and cool dry skin; hypovolemic shock presents with tachycardia and warm flushed skin.
• D. Both shocks present identically so differentiation is not possible.

Answer: (A)

In trauma, the way shock presents helps you tell what’s driving it. Neurogenic shock comes from loss of sympathetic vascular tone, often after a spinal injury, causing widespread vasodilation. That leads to low blood pressure with a slow heart rate (bradycardia) and skin that feels warm and dry because the vessels are dilated and blood is not being shunted to the skin in an attempt to preserve core perfusion. On the other hand, hypovolemic shock results from significant blood loss, so the body activates the sympathetic system to constrict vessels and raise the heart rate. This produces hypotension with tachycardia and cool, clammy skin due to peripheral vasoconstriction and reduced perfusion to the skin and extremities.

So the differentiating pattern is hypotension with bradycardia and warm dry skin in neurogenic shock, versus tachycardia with cool clammy skin in hypovolemic shock. The other described patterns don’t fit the typical autonomic response or skin cues that distinguish these two types of shock.