Which term describes abnormally low blood pressure?

• A. Hypotension
• B. Tachypnea
• C. Wheeze
• D. Biohazard

Answer: (A)

Abnormally low blood pressure is called hypotension. It means arterial pressure is lower than normal, which can lead to reduced blood flow to organs. In adults, a common reference is systolic below 90 mmHg or diastolic below 60 mmHg, though exact thresholds can vary with age and context. Clinically, watch for symptoms such as dizziness, lightheadedness, fainting, or confusion, especially when standing (orthostatic hypotension), because these signs reflect decreased perfusion. This term specifically describes low pressure, distinguishing it from hypertension, which is high blood pressure. The other terms describe different concepts: rapid breathing (tachypnea), a noisy airway sound (wheeze), and hazardous material (biohazard), none of which relate to blood pressure.