what exactly is low blood pressure. what harm does it do?

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  • 1 decade ago
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    Blood pressure doesn't refer to the rate at which your blood is being pumped. Rather, it is the pressure exerted upon the walls of the arteries. The "top number" is the pressure when your heart is contracting; the "bottom number" is the pressure when your heart is at rest.

    "Low blood pressure" for you should be determined by your doctor, based on your age, size, health status, etc. But normally a lower BP than 90/60 would be considered low. You can be dizzy, not have enough cardiac output, have headaches, etc. from low blood pressure. Low BP isn't so much a problem in itself as it is a symptom of something else; you and your doc should find out what's causing it and fix that instead.

  • 1 decade ago

    Your question is almost too vague to answer. If you're talking about a person in the ICU who is in critical condition, then it can mean very serious harm to the person's organs/life.

    If you're talking about a young, healthy person who has some dizziness, and that's it, then that's a horse of a different color.

    A well-respected doctor once told me, "As long as the patient has no symptoms, there's no such thing as low blood pressure."

    All that said, your question would be better-answered if you listed the person's age and general medical condition.

  • 1 decade ago

    If left untreated u could pass out and go into a coma

  • Anonymous
    1 decade ago

    it happens mostly when you need to eat something. like you haven't eaten in a while and your blood pressure goes down and you feel sleepy and feel major hunger pains. why do you want to know?

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  • Anonymous
    1 decade ago

    Its when your blood pumps very slow.It makes you slepy and can cause illness.

  • 1 decade ago

    It is when your heart is not pumping enough blood

    it can cause you to have a heart attack or stoke

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