why do we have low blood pressure
What Is Low Blood Pressure? Hypotension is the medical term for (less than 90/60). A reading appears as two numbers. The first and higher of the two is a measure of systolic pressure, or the pressure in the
when the beats and fills them with. The second number measures diastolic pressure, or the pressure in the arteries when the rests between beats. Optimal blood pressure is less than 120/80 (systolic/diastolic). In healthy people, low blood pressure without any symptoms is not usually a concern and does not need to be treated. But low blood pressure can be a sign of an underlying problem -- especially in the elderly -- where it may cause inadequate flow to the heart, and other vital organs.
Chronic low blood pressure with no symptoms is almost never serious. But health problems can occur when blood pressure drops suddenly and the is deprived of an adequate blood supply. This can lead to or lightheadedness. Sudden drops in blood pressure most commonly occur in someone who's rising from a lying down or sitting position to standing. This kind of low blood pressure is known as or orthostatic hypotension. Another type of low blood pressure can occur when someone stands for a long period of time. This is called neurally mediated hypotension. Postural hypotension is considered a failure of the cardiovascular system or to react appropriately to sudden changes.
Normally, when you stand up, some blood pools in your lower extremities. Uncorrected, this would cause your blood pressure to fall. But your body normally compensates by sending messages to your heart to beat faster and to your blood vessels to constrict. This offsets the drop in blood pressure. If this does not happen, or happens too slowly, postural hypotension results. The risk of both low and normally increases with age due in part to normal changes during aging. In addition, blood flow to the heart muscle and the declines with age, often as a result of plaque buildup in blood vessels. An estimated 10% to 20% of people over age 65 have postural hypotension.
Low blood pressure, also knownPas hypotension, is where blood pressure in your arteries is abnormally low. Naturally low blood pressure is unlikely to cause any symptoms and is normally nothing to worry about. But if your blood pressure drops too low, it can restrict the amount of blood flowing to your brain and other vital organs, which can cause unsteadiness, dizziness orP. See your GP if you experience anyPsymptoms of low blood pressure and are concerned. All adults should have their blood pressure checked at least every five years. If you haven't had yours measured or don't know what your reading is, ask your GP to check it. Read more about the.
What is low blood pressure? The heart pumps a constant supply of blood around the body through arteries, veins and capillaries. Blood pressure is a measure of the force of the blood on the walls of the arteries as the blood flows through them. systolic pressure diastolic pressure For example, if your systolic blood pressure is 120mmHg and your diastolic blood pressure is 80mmHg, your blood pressure is 120 over 80, which is commonly written as 120/80. Normal blood pressure is between 90/60 and 140/90. PIf you have a reading of 140/90 or more, you haveP (hypertension). This puts you at greater risk of developing serious health conditions, suchPas Por.
People with a blood pressure reading under 90/60 are usually regarded as having low blood pressure. Read more about. Why do I have low blood pressure? You can have low blood pressure for many reasons, including the time of day, your age, the temperature, any medication you may be on, an injury, and some illnesses. Read more about the. Naturally low blood pressure doesn't usually need to be treated unless it's causing symptoms such as dizziness or recurrent falls. PIf it's causing symptoms, your GP will look at what the cause might be in case it can be treated. There are also various things you can doPto help limit symptoms of low blood pressure, including: ReadPmore about.
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