what do the top and bottom numbers mean in blood pressure readings?
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Blood pressure is recorded with 2 numbers. The systolic pressure (higher number) is the force at which your heart pumps blood around your body. The diastolic pressure (lower number) is the resistance to the blood flow in the blood vessels. They're both measured in millimetres of mercury (mmHg).
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Extremely high blood pressure — a top number (systolic pressure) of 180 millimeters of mercury (mm Hg) or higher or a bottom number (diastolic pressure) of 120 mm Hg or higher — can damage blood vessels. The blood vessels become inflamed and may leak fluid or blood.
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['Healthy:A healthy blood pressure reading is less than 120/80 millimeters of mercury (mm Hg).', 'Elevated:The systolic number is between 120 and 129 mm Hg, and the diastolic number is less than 80 mm Hg.']
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if your top number is 140 or more - then you may have high blood pressure, regardless of your bottom number. if your bottom number is 90 or more - then you may have high blood pressure, regardless your top number. if your top number is 90 or less - then you may have low blood pressure, regardless of your bottom number.
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The top number refers to the amount of pressure in your arteries during the contraction of your heart muscle. This is called systolic pressure. The bottom number refers to your blood pressure when your heart muscle is between beats. This is called diastolic pressure.
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ANSWER. The diastolic reading, or the bottom number, is the pressure in the arteries when the heart rests between beats. This is the time when the heart fills with blood and gets oxygen. A normal diastolic blood pressure is lower than 80. A reading of 90 or higher means you have high blood pressure.
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Generally, if the blood pressure reading is under 90/60 mm Hg, it is abnormally low and is referred to as hypotension. Some adults regularly have blood pressure in the hypotensive range but have no symptoms and do not require treatment.
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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.
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Normal blood pressure is less than 120/80 mm Hg. Readings between 120/80 mm Hg and 139/89 mm Hg indicate that a person is at risk of developing hypertension, while readings of more than 140/90 mm Hg signify hypertension. Blood pressure rises and falls throughout the day and night.
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Your blood pressure is normal if it's below 120/80 mm Hg. Elevated blood pressure. Elevated blood pressure is a systolic pressure ranging from 120 to 129 mm Hg and a diastolic pressure below 80 mm Hg. Elevated blood pressure tends to get worse over time unless steps are taken to control blood pressure.
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The first, or top number, is your pressure when your heart beats, called the systolic pressure. The second, or bottom number, measures the force of blood in your arteries while your heart is relaxed (filling with blood between beats). This is called the diastolic pressure.
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Normal blood pressure is defined when the top number (systolic) is less than 120 mm Hg and the bottom number is under 80 mm Hg. Anything less than 90 over 60 is considered low, but low doesn't always mean unhealthy or dangerous.
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Advertisement. The top number (systolic) minus the bottom number (diastolic) gives you your pulse pressure. For example, if your resting blood pressure is 120/80 millimeters of mercury (mm Hg), your pulse pressure is 40 — which is considered a normal and healthy pulse pressure.
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The bottom number is the diastolic blood pressure, which is the force as your heart relaxes. These are the standard classifications for normal and high blood pressure. Normal blood pressure: 90/60 to under 120/80 mm Hg. Prehypertension, or risk for hypertension: 120-139/80-89 mm Hg.
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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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For example, if your blood pressure is "140 over 90" or 140/90mmHg, it means you have a systolic pressure of 140mmHg and a diastolic pressure of 90mmHg. As a general guide: ideal blood pressure is considered to be between 90/60mmHg and 120/80mmHg.
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In severe cases, low blood pressure can be life-threatening. A blood pressure reading lower than 90 millimeters of mercury (mm Hg) for the top number (systolic) or 60 mm Hg for the bottom number (diastolic) is generally considered low blood pressure.