Symptoms to spot
Symptoms of orthostatic hypotension include light-headedness, weakness, dizziness, difficulty thinking, feeling faint, and headache.
Orthostatic hypotension is generally evaluated by measuring the blood pressure of a patient while sitting, or lying down, and again while standing.
If a person’s blood pressure drops more than 20 mm Hg in systolic pressure (the top number) or more than 10 mm Hg in diastolic pressure (the bottom number) they are considered to have orthostatic hypotension.
Studies suggest a more accurate way to diagnose orthostatic hypotension is using a calculation called “upright mean arterial blood pressure,” which takes into account both the systolic and diastolic blood pressures.
When this number is under 75 mm Hg, it indicates orthostatic hypotension.