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Someone with a systolic pressure of 117 and a diastolic pressure of 78 has a blood pressure of 117/78, or "117 over 78." It's normal for blood pressure to go up and down throughout the day. But if it stays up, you have high blood pressure.


The second number is the diastolic number and it measures the force of the blood in the arteries when the heart is between beats. A normal blood pressure is considered 120/80 mm Hg. A normal person’s blood pressure varies throughout the day. If it remains elevated for an extended period of time, then a person is said to have high blood ...


Blood pressure is expressed by two measurements, the systolic and diastolic measurements represented by the top number and bottom number received when measuring blood pressure, respectively.


Low blood pressure is a top number reading lower than 90 or pressure 25 mmHg lower than usual. Moderate to severe high blood pressure is a top number 160 or over or the bottom number of 100 or over.


A top systolic blood pressure number in the range of 140 to 150 is the first stage of high blood pressure that doctors need to be aware of. One's blood pressure numbers change over time, but typically, the top number—the systolic blood pressure—should be anywhere between 120 and 139. One exception in that situation has to do with age.


A blood pressure reading is presented as systolic/diastolic, as in 120/80, 120 represents the systolic reading, while 80 represents the diastolic reading. The measurement unit for blood pressure is mm Hg. Below is a blood pressure chart by age. A blood pressure monitor that shows systolic, diastolic reading and the pulse.


Low diastolic blood pressure means pressure recorded below 70 mm of Hg. It is considered as low blood pressure or hypotension. It may be slightly low, a reading between 80 to 70 mm of Hg in some individuals and can be a normal finding. However, when the diastolic blood pressure falls below 70 mm of Hg, it can lead to health problems.


Recent findings suggest that it's worth treating patients in that prehypertension gray area of 120 to 140 to bring them down into the normal range. But how?


In general, low blood pressure is defined as 90/60 mmHg or less, according to the National Heart, Lung, and Blood Institute. A quick refresher on blood pressure readings : The top number (systolic) represents how much pressure your blood is placing on your artery walls when the heart beats.


When the top number (systolic) is at least 140 and the bottom number (diastolic) is at least 90, this is considered high blood pressure (hypertension). Depending on which doctor you speak to, you’ll be told that 130 is the cutoff point for pre-hypertension.