Perfusion is the process of delivering oxygen and nutrients to the body’s tissues and organs. Following traumatic injury, perfusion may become compromised due to blood loss, shock, or other conditions that affect circulation.

Early perfusion assessment helps providers identify deterioration before blood pressure begins to fall.

Key indicators of perfusion include:

• Mental status
• Skin color, temperature, and condition
• Pulse rate and quality
• Capillary refill
• Blood pressure

Assessment findings that may indicate poor perfusion include:

• Altered mental status
• Pale, cool, or clammy skin
• Weak or absent peripheral pulses
• Delayed capillary refill
• Tachycardia
• Hypotension (late finding)

Trauma patients may be experiencing significant circulatory compromise even when blood pressure remains within normal limits. Mental status, pulse quality, and skin signs are often the first indicators of inadequate perfusion — changes in these findings should prompt immediate reassessment and intervention. 

Perfusion assessment should be performed early and repeated frequently. Deteriorating perfusion status may indicate worsening shock, ongoing hemorrhage, or other life-threatening conditions.

Remember: Do not wait for hypotension. Changes in mental status, pulse quality, and skin signs are often the first sign that perfusion is failing.