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what does it mean when your blood pressure is very low?

what does it mean when your blood pressure is very low regularly, and your pulse rate is generally very high.? been to doctors, didnt have much to say apart from my pulse rate was high possibly because i had white coat syndrome, but i normally get it checked at the chemist, or by my aunt. its normally about 80-100, and my bp is 90/55 today, was 69/54 yesterday, i asked a question but didnt get much useful responses. i have already gone to the doctors!! i just hate being giddy and breathless alll the time. im twenty one and ive always been a bit light headed only its getting worse and normally happens when im worried or stressed which im not at the mo im quite anaemic too if that helps i havent done twenty readings a day (lol)! but i have had it done at the same time first thing in the morning and after lunch just to see what would come up and my pulse has always been really high and my bp low i work one day a week in a chemist and i do blood pressure readings for customers and ive noticed their pulse rate is normally in the range of fifty to about seventy five so thats when i first started thinking about my own pulse and now of course the giddiness is really starting to become more obvious and i have to sit down a lot more if say ive got up too fast or just started blacking out thanks
Fri, 11 Dec 2009
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  User's Response
Hi, - both your pulse rates and B/P's vary by huge amounts over the course of the day. A single reading, whether by your doctor, a pharmacist, or your aunt, is pretty meaningless because it's just like being blind-folded and sticking a pin into a board. To check this, borrow a wrist or upper-arm monitor and record about 20 readings over the course of the day. You'll be amazed, and will understand why it's so silly when people say "My blood pressure is 140/88"..... Any B/P reading depends on several factors. (1) Time of day, (2) type of activity (or rest), (3) pulse rate, (4) which arm is used, and importantly, the ratio between pulse rate and pulse pressure at the time (pulse pressure is the difference between systolic (he top one) and diastolic (the bottom one) pressures, and of course, the amount of blood flowing, and the degree of dilation of the arteries. So, the miracle is, that you ever get 2 readings that ever agree! Mostly, they don't. That's why your doctor won't ever be able to give you 'a useful response'. It isn't possible. - All they look for is "Is it normal? -or abnormal?" and since no 2 doctors ever agree on what's 'normal', or 'abnormal', it's not surprising you're beng left in the dark. Actually, your B/P's are absolutely typical, and give no cause for any queries, -if that helps? But I can't tell you more, not knowing your age, health condition, etc. If you want to add any details to your question, it may help. For instance, if you're teenage or slightly older, (I mean under about 30) then it's quite common to experience light-headedness or even faintings, - it's called 'syncope', and usually alleviates with maturity. If you're already older, then lots of other conditions might explain the giddyness and breathlessness, and it may be nothing to do with your cardiovascular system OK, PS. - Your age etc all indicate syncope.. I'd explore that if I were you, but since the doctors don't know much about it, don't expect miracles. I associate in a Research Group called PUMMA (Oxford) looking into the mysteries of it. You get a big shot of adrenaline each morning on waking and rising, which might account for your high pulse then. And you always get a raised pulse after meals -to aid flow to the stomach and digestive organs. So it's worth taking readings say, late mornings? and when you're tired and resting just before bed? If you can be bothered to take a reading just before falling asleep, or the instant you wake, still sleepy (before the wake-up adrenaline kicks in) I'd guess your pulse would be lower and your B/P's probably too? If that's the case, then your system's working fine. Just one more thing.. take your pulse sitting, and then stand up and jump around a bit and take it again. It should quickly rise, then fall back to the original, within a few minutes. If all that happens, then you're just a normal, healthy, (and happy, I hope!) Twenty-Something. The actual B/P levels don't mean thing, -contrary to popular belief. It's CHANGES in the readings that are significant. So, if your B/P's had SUDDENLY gone down, you'd have cause for worries, - but in your case it appears that (like freckles or spots, or blonde hair) your personal characteristic is a high pulse and probably a low pulse-pressure, which when multiplied by each other give your correct cardiac output. Good luck, - don't let a little knowledge turn you into an introspective hypochondriac! Enjoy the best time of your life and let the doctors do the worrying.
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
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