Which term denotes a form of low blood pressure caused by standing up?

• A. Orthostatic hypotension
• B. Standing hypotension
• C. Hypotension upon standing
• D. Postural hypotension

Answer: (D)

Postural hypotension is the term for a drop in blood pressure that happens when you stand up. When you stand, gravity pulls blood into the legs, which can lower the amount returning to the heart. If the body's normal compensatory mechanisms—like narrowing blood vessels and increasing heart rate—don’t kick in quickly enough, the blood pressure falls and you might feel dizzy or lightheaded. This description fits precisely what happens with standing, so the term postural hypotension is the best choice. (Note: orthostatic hypotension is another widely used name for the same condition.)