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Hypotension
Hypotension, or low blood pressure, is when your blood pressure’s much lower than expected. It can happen either as a condition on its own or as a symptom of a wide range of conditions. It may not cause symptoms, but when it does, it can require medical attention.
Hypotension has two definitions:
- Absolute hypotension: Your resting blood pressure is below 90/60 millimeters of mercury (mm Hg).
-Orthostatic hypotension: Your blood pressure remains low for longer than three minutes of you standing up from a sitting position. (It’s normal for your blood pressure to drop briefly when you change positions, but not for that long.) The drop must be 20 millimeters of mercury or more for your systolic (top) pressure and 10 millimeters of mercury or more for your diastolic (bottom) pressure.

How does low blood pressure affect my body?
Usually, your body can automatically control your blood pressure and keep it from dropping too much. If it starts to drop, your body tries to make up for that, either by speeding up your heart rate or constricting blood vessels to make them narrower. Symptoms of hypotension happen when your body can’t offset the drop in blood pressure.
What are the symptoms of low blood pressure?
The most common low blood pressure symptoms happen because your brain isn’t getting enough blood flow. These include: dizziness or feeling lightheaded, nausea, fainting or passing out, blurred vision, fast or shallow breathing, fatigue.
What medications/treatments are used?
The most important thing for a provider treating low blood pressure is to find the underlying cause and correct it. Treatments can range from simple IV fluids to antibiotics to surgery or even a heart transplant. Some people with low blood pressure need a hospital stay.