Which of the following indicates poor perfusion in trauma patients?

Low blood pressure in trauma patients is a significant indicator of poor perfusion. When a patient experiences trauma, blood loss or injury can lead to hypovolemic shock, which in turn causes a decrease in blood pressure as the body's ability to maintain adequate circulation is compromised.

Low blood pressure signifies that the vital organs may not be receiving sufficient blood flow and oxygen, which is critical for cellular function and survival. It is a red flag that requires immediate attention as it can lead to organ failure and ultimately, death if not addressed promptly.

High blood pressure would typically indicate increased cardiac workload and would not be associated with poor perfusion. A stable heart rate suggests that the body is not compensating for low blood flow, which is consistent with stable hemodynamics rather than indicating poor perfusion. Consistent body temperature does not provide specific indications of perfusion status in the context of trauma, as it might be influenced by various factors not directly related to blood flow or oxygen delivery. Thus, among the options provided, low blood pressure stands out as the key indicator of poor perfusion in trauma patients.