Which of the following is NOT a sign of shock?

Delirium is considered a mental state characterized by confusion, disorientation, and an inability to focus, but it is not a direct physical sign of shock. Shock is a medical emergency that occurs when the body doesn't get enough blood flow, leading to a lack of oxygen and nutrients in the tissues. The signs of shock are typically physiological responses that indicate the body's distress and its attempt to maintain vital functions.

Skin that is pale, cold, and clammy indicates poor circulation and the body's effort to redirect blood to the most vital organs during shock. Vacant eyes with dilated pupils are also a response seen in shock, as the body may react to stress and lack of oxygen by altering eye function. Irregular breathing and pulse are critical indicators of shock, reflecting the body's struggle to maintain adequate oxygen levels and blood flow. In contrast, delirium, while it may occur as a result of various medical conditions or complications, does not directly signify the physiological states associated with shock itself.