Inadequate circulation of blood throughout the body is defined as which term?

• A. Shock
• B. Perfusion
• C. Hypotension
• D. Hypoxia

Answer: (A)

Inadequate circulation of blood throughout the body is called shock. Shock describes a state of systemic hypoperfusion, where not enough blood reaches the tissues to meet their needs for oxygen and nutrients. This is the fundamental issue behind the term. Low blood pressure (hypotension) can occur with shock, but it’s just a sign that may accompany the condition and doesn’t define it. Hypoxia refers to tissue oxygen deficiency, which can result from shock but isn’t the description of the circulatory failure itself. Perfusion is the process of delivering blood to tissues, so while poor perfusion describes the problem, the clinical term for the overall condition is shock.