Which combination of signs best indicates probable hypoperfusion (shock) in a trauma patient?

• A. Tachycardia, cool clammy skin, delayed capillary refill, and altered mental status.
• B. Tachycardia, warm clammy skin, rapid capillary refill, and alert.
• C. Bradypnea, hot skin, normal capillary refill, and calm demeanor.
• D. Normal pulse, moist skin, no confusion.

Answer: (A)

In trauma, hypoperfusion from shock triggers a sympathetic response that raises heart rate to try to maintain blood flow to vital organs. As perfusion worsens, blood is shunted to the core, the skin becomes cool and clammy from peripheral vasoconstriction, capillary refill slows, and brain function can decline, causing altered mental status. The combination of tachycardia, cool and clammy skin, delayed capillary refill, and altered mental status reflects that pattern most clearly. The other scenarios don’t fit: warm skin with rapid capillary refill and alert status suggests better perfusion or a different shock phase; bradypnea with hot skin and calm demeanor doesn’t align with hypoperfusion; normal pulse with moist skin and no confusion indicates stable perfusion.