Which of the following can indicate a state of shock?

All of the listed factors—oxygen debt, tachycardia, and hypotension—can collectively indicate a state of shock.

Oxygen debt refers to a deficiency in the amount of oxygen available to the tissues, which can occur during shock when the body's demand for oxygen exceeds supply. This is a critical aspect because the body's cells may begin to function inefficiently or die if there is an inadequate oxygen supply.

Tachycardia, or an elevated heart rate, is a common physiological response to shock. When the body experiences shock, it tries to compensate for decreased perfusion and oxygen delivery to vital organs by increasing the heart rate. This compensatory mechanism aims to maintain adequate blood flow despite potential volume loss or low blood pressure.

Hypotension, or low blood pressure, is another hallmark sign of shock. In many types of shock, especially hypovolemic or septic shock, the circulatory system cannot maintain sufficient pressure to push blood through the arteries, which leads to reduced blood flow to the organs.

Thus, the presence of oxygen debt, tachycardia, and hypotension supports the diagnosis of shock, making the combination of all three indicators particularly relevant.