One type of orthostatic hypotension is low blood pressure that happens after eating – this is called postprandial hypotension and usually affects older people. There are many causes of orthostatic hypotension, including dehydration, pregnancy and certain medicines. People with this type of low blood pressure have a sudden fall in blood pressure upon changing positions – usually standing up – which causes fainting (or feeling faint, or light-headed or dizzy). Orthostatic hypotension, also called postural hypotension, is an inability to regulate blood pressure quickly. There are 3 main types of low blood pressure. temperature can affect your blood pressure). your blood pressure is lower when you are asleep) Your blood pressure changes throughout the day and is affected by your:
A decreased amount of blood in the body is called hypovolaemia. Cardiac output (the rate at which blood is pumped from the heart).Factors affecting blood pressureīlood pressure is determined by 3 main factors. However, if symptoms continue to occur, the underlying cause should be investigated by a doctor. Many cases of low blood pressure get better without any treatment. Such symptoms may be more serious in older people as they may have a number of problems that make it difficult to maintain constant blood pressure. This should help relieve symptoms within a few minutes.Īn episode of dizziness and fainting in young, healthy people is usually nothing to worry about. If you have these symptoms, you should lie down and, if possible, elevate your feet and legs (for example on a cushion). light-headedness (sometimes described as dizziness).
However, sometimes there are symptoms of low blood pressure, such as: How low is too low? In general, it is much better to have low blood pressure rather than high blood pressure, and it may even prolong life expectancy.
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