what does it mean when your blood pressure it low?
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Most doctors consider blood pressure too low only if it causes symptoms. Some experts define low blood pressure as readings lower than 90 mm Hg systolic or 60 mm Hg diastolic. If either number is below that, your pressure is lower than normal. A sudden fall in blood pressure can be dangerous.
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As a general guide, low blood pressure is a reading of 90/60 or less. However, it is not necessary for both your systolic and diastolic readings to be in this range for it to be considered low blood pressure.
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Low blood pressure might seem desirable, and for some people, it causes no problems. However, for many people, abnormally low blood pressure (hypotension) can cause dizziness and fainting. In severe cases, low blood pressure can be life-threatening.
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Even moderate forms of low blood pressure can cause dizziness, weakness, fainting and a risk of injury from falls. And severely low blood pressure can deprive your body of enough oxygen to carry out its functions, leading to damage to your heart and brain.
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Underlying causes of low blood pressure Decreases in blood volume: A decrease in blood volume can also cause blood pressure to drop. A significant loss of blood from major trauma, dehydration or severe internal bleeding reduces blood volume, leading to a severe drop in blood pressure.
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Some heart conditions that can lead to low blood pressure include extremely low heart rate (bradycardia), heart valve problems, heart attack and heart failure.
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Understanding Hypotension If your blood pressure is 120/80 millimeters of mercury (mm Hg) or lower, it's considered normal. Generally, if the blood pressure reading is under 90/60 mm Hg, it is abnormally low and is referred to as hypotension.
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Low blood pressure may be a sign of multiple conditions, including dehydration, severe infection with septic shock, endocrine (hormonal) conditions, some heart diseases, and taking certain medications. Psychological stress is not a known cause of abnormally low blood pressure.
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"In a healthy person, low blood pressure is a sign of good health as long as the systolic pressure is above 80," explains Dr. Pacold. "Very low blood pressure in a person with heart disease could be a sign of heart failure."
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But if your blood pressure drops suddenly or causes symptoms like dizziness or fainting, it is too low. It can cause shock. Shock can be dangerous if it is not treated right away.
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Low blood pressure is when your blood pressure falls much lower than is normal for you. You may be a person who has naturally low blood pressure which isn't causing any problems. But if your blood pressure becomes lower than usual for you, it can cause symptoms such as dizziness and fainting.
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Low blood pressure, or hypotension, is blood pressure that has dropped below healthy levels. It can be caused by dehydration, certain medical conditions and medications, and surgery. It can cause dizziness, blurred vision, headache, and fainting.
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What's considered low blood pressure for you may be normal for someone else. Most doctors consider blood pressure too low only if it causes symptoms. Some experts define low blood pressure as readings lower than 90 mm Hg systolic or 60 mm Hg diastolic. If either number is below that, your pressure is lower than normal.
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The medical term for low blood pressure is hypotension. If you have hypotension, your systolic pressure measurement is under 90 mm Hg and your diastolic number is under 60 mm Hg.
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Postural (orthostatic) hypotension is when your blood pressure drops when you go from lying down to sitting up, or from sitting to standing. When your blood pressure drops, less blood can go to your organs and muscles.
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Blood pressure varies from one person to another. A drop as little as 20 mmHg, can cause problems for some people. There are different types and causes of low blood pressure. Severe hypotension can be caused by sudden loss of blood (shock), severe infection, heart attack, or severe allergic reaction (anaphylaxis).
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Many people worry about low blood pressure (hypotension), but probably don't need to. Some people have a blood pressure level that is lower than normal. In general this may be good news - because the lower your blood pressure is, the lower your risk of stroke or heart disease.