Which sign may suggest that a casualty is experiencing shock?

A weak or absent radial pulse is a significant indicator that a casualty may be experiencing shock. In a state of shock, the body prioritizes blood flow to vital organs, leading to decreased perfusion in peripheral areas. This can manifest as a weak or absent pulse in the radial artery as the heart struggles to pump blood effectively. Other physiological responses to shock include changes in skin temperature, mental status, and breathing patterns, which may also vary based on the severity and type of shock. In contrast, warm skin, a normal breathing pattern, and a fully alert mental state typically do not align with the signs of shock and are generally indicators of stable physiological conditions. Understanding these signs is critical for timely assessment and intervention in trauma care.