In the assessment of Circulation during the Primary Survey, which finding best fits the description provided in the material?

• A. Capillary refill only
• B. Radial pulse only
• C. Skin color, capillary refill, radial, femoral, and carotid pulses
• D. Skin color only

Answer: (C)

In the Primary Survey, evaluating circulation is about getting a quick, complete read on perfusion. Skin color gives a visual cue about overall blood flow to the skin, and capillary refill time adds a rapid check of peripheral perfusion. But neither skin color nor capillary refill alone reliably reflects central circulation to vital organs. Checking pulses at several sites—carotid and femoral to assess central perfusion, and radial to gauge peripheral perfusion—lets you compare central and peripheral flow and detect shock early. The combination of skin color, capillary refill, and palpation of the carotid, femoral, and radial pulses provides the most comprehensive, rapid picture of circulation, which is why it’s the best choice. Relying on only one sign can miss important clues: capillary refill alone may be affected by temperature or lighting; a radial pulse alone can be present even when central perfusion is compromised; skin color alone can be unreliable due to lighting or pigmentation.