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My heart rate while resting is around 95-110, all reports are normal.

My heart rate while resting is around 95-110. It s even been as high as 125. I m not overweight or anything. I only weigh 125-130. I m 18 years old and very active during the day. I ve been to the dr and they say that nothing is wrong. But when I stand up after sitting for just a short period of time I get dizzy and I kinda black out and my heart feels like its going to beat right out of my chest , and sometimes when I walk/jog it slows down and then gets really fast like it s trying to catch up with the rest of my body or something. It kinda feels like it s fluttering. I ve had blood work done, and a full physical and they said I was fine. What could be causing my heart to do this. my blood pressure is normal, my stress level is normal, everything is normal except my heart rate. I just understand what could be causing this. I ve been to several doctors and all of them say the same thing. you re healthy... nothings wrong... the last one even told me to grunt when it acted up to reset it. As crazy as it sounds... I ve tried it and it doesn t help. It s getting worse, but none of the drs I go to will listen. The lowest it s been in the last 5 years is 95.
Asked On : Tue, 15 Dec 2009
Answers:  1 Views:  576
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Everyone's different, in the cardiovascular field just as in say, facial features. So there's a big 'spread' of pulse rates and yours just happens to be on the higher side of average. A similar question being asked here (now) on Answers is at the opposite end, -about 50 bpm. So if it hasn't suddently changed, there's nothing wrong with your pulse rate range. Provided it rises properly with activity (stress, physical exercise, etc) and falls back to the original figure when resting, then it's delivering the right cardiac output. It should return to resting rate within a few minutes. Your pulse rate, multiplied by the volume of blood ejected from the heart at each beat, is the cardiac output, (which is dertermined by your brain) so if your normal pulse rate is on the high side, then it simply means your left ventricle is probably smaller than average, -but the output is the same as anybody else's. (Note I say 'average' -not 'normal'...- you're not abnormal, even though your pulse isn't average,...your cardiac output will be normal, and that's what matters.) The dizziness is probably unconnected with your pulse rate question. It's quite common for young people -especially females of your age-, to suffer from this temporarily but it usually works its way out of your system by the time you're fully mature physically. If you want the posh medical name for it, it's called 'syncope', and you can read it up on Google, or the reference below. 3 things happen when you exercise. (1) the blood vessels dilate. (2) the pulse quickens, and (3) the heart pumps out a greater volume at each stroke. But the mechanisms that make these happen are all different, so they don't happen synchronously. Eventually, they all stabilize at some output level, but until they do, you'll feel the exact effects you describe, -'trying to catch up' and 'fluttering', etc. All predictable, and quite normal auto-reactions, -honestly!. - If you didn't feel and experience these effects then you'd not be normal. Chill out, stop worrying, and enjoy the best years of your life! Best wishes.
Answered: Tue, 15 Dec 2009
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