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    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
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    #1

    Dec 11, 2015, 11:07 AM
    How to quantify blood pressure increase or decrease
    Hi all.

    Is there a way to say "how much" blood pressure changed between two readings?

    Example:
    Reading 1: 135/89
    Reading 2: 141/91

    Is there a number that represents how much higher (X times, or X percent) the 2nd reading is?

    Is there a formula?

    Thanks!
    talaniman's Avatar
    talaniman Posts: 54,318, Reputation: 10854
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    #2

    Dec 11, 2015, 12:03 PM
    I was told that the small fluctuation isn't the main thing, and the RANGE is what's important.

    What is a normal reading on a blood pressure chart? | Get.Smarter.com

    Your two examples seems kind of high.
    ma0641's Avatar
    ma0641 Posts: 15,681, Reputation: 1012
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    #3

    Dec 11, 2015, 02:57 PM
    How much time between readings? Did you rest 4 minutes before reading?
    J_9's Avatar
    J_9 Posts: 40,299, Reputation: 5646
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    #4

    Dec 11, 2015, 03:52 PM
    What was the activity level prior to the two readings?
    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
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    #5

    Dec 11, 2015, 07:24 PM
    Thanks, Tal, ma and J!

    I'm really asking a "medical math" question. I gave example readings.

    My BP was high at my bi annual physical- very unusual for me. The Dr said to come in every 3-4 days to have it tested. Bunk. I bought a good reader and am checking it twice a day to cover active and inactive times.

    I'm really just asking if there is such a term (mathematically speaking) to say "how much" higher or lower one reading is from another. I know that many factors can influence the reading; I'm just looking for a number (the math geek in me) that will represent how much higher or lower one reading is from another.

    Is there a formula that will fill in for x in
    "reading 2 is x% higher than reading 1"?
    or even
    "reading 1 (or reading 2) is X above 120/80"

    ... haha, yeah I know:

    OCD, PhD.
    tickle's Avatar
    tickle Posts: 23,801, Reputation: 2674
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    #6

    Dec 12, 2015, 03:41 AM
    No Rick, we don't live in a perfect world and you will not find a mathematical formula to tell you that. Resting blood pressure reading is what you are supposed to go by because when you are physically more active through the day, your blood pressure will naturally go up but stay at a safe level. Of course if you live under a rock your blood pressure would be 120/40 until you exert yourself turning over, then it would go up.
    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
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    #7

    Dec 14, 2015, 10:54 AM
    Right. I have a medical background so know how it all works, I've just never tracked readings before so hoped there was a number to show the increase or decrease between readings.

    Thanks, all.
    J_9's Avatar
    J_9 Posts: 40,299, Reputation: 5646
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    #8

    Dec 14, 2015, 11:42 AM
    In my area of expertise, pregnant women with pressure issues, we don't have the magic formula you are looking for. We simply watch the ebb and flow over a specific time period.
    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
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    #9

    Dec 14, 2015, 03:09 PM
    Makes sense. I'm bummed to find that I now have HBP. My Dr was shocked as I have a long history of textbook BP. No diet or lifestyle changes recently except for positive stuff: Quit smoking May 2012 and lost 25 pounds in the last year.

    Maybe I should go back to smoking and a meat and potatoes diet :)

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