Hypoxia is defined as?

Hypoxia is defined as?

• A. Decreased oxygen in blood
• B. Increased oxygen in tissues
• C. Lack of oxygen to tissues
• D. Normal oxygen delivery

Answer: (C)

Hypoxia means tissues aren’t getting enough oxygen to meet their metabolic needs. It’s a tissue-level problem, not just a change seen in the blood. You can have low oxygen in the blood (hypoxemia), but what defines hypoxia is insufficient oxygen delivery to or utilization by the tissues themselves. The other options miss this focus: decreased oxygen in blood describes hypoxemia, increased oxygen in tissues isn’t a real scenario, and normal oxygen delivery wouldn’t cause hypoxia. Hypoxia can arise from problems with oxygen content, blood flow, or the body's ability to use oxygen, but the defining idea is lack of oxygen reaching or sustaining tissues.

Hypoxia means tissues aren’t getting enough oxygen to meet their metabolic needs. It’s a tissue-level problem, not just a change seen in the blood. You can have low oxygen in the blood (hypoxemia), but what defines hypoxia is insufficient oxygen delivery to or utilization by the tissues themselves. The other options miss this focus: decreased oxygen in blood describes hypoxemia, increased oxygen in tissues isn’t a real scenario, and normal oxygen delivery wouldn’t cause hypoxia. Hypoxia can arise from problems with oxygen content, blood flow, or the body's ability to use oxygen, but the defining idea is lack of oxygen reaching or sustaining tissues.