Which of the following is a sign of hypovolemic shock?

Mottling is indeed a sign of hypovolemic shock. This condition occurs when there is a significant loss of blood volume, often due to hemorrhage or severe dehydration. As a result, the body prioritizes blood flow to vital organs, leading to decreased perfusion of the skin and extremities. Mottling appears as a discolored pattern on the skin, often a bluish or purplish color, reflecting inadequate blood circulation and oxygen delivery.

In contrast, bradycardia is more commonly associated with certain types of shock, like neurogenic shock, rather than hypovolemic shock, where tachycardia (increased heart rate) is typically seen as the body tries to compensate for decreased blood volume. Increased urine output is generally not a sign of hypovolemic shock; in fact, you would expect decreased urine output due to reduced blood flow to the kidneys. Flushed skin is also not characteristic of hypovolemic shock; instead, the skin may feel cool and appear pale or mottled due to compromised circulation. This context helps illustrate why mottling is specifically linked to the physiological changes occurring during hypovolemic shock.