My heart rate has climbed as high as 157 documented, just after waking and getting ready for work. Hadn't eaten yet. Mostly, my tachy comes after a meal and shoots up with any exertion. The 130s-150s don't have to have exertion on days where I just feel "off". I have found that when I am nauseaus and dizzy, my BP is low and my pulse is racing. My heart isn't always pounding, just fast upon checking with a BP cuff. I am going to cross my fingers and pray at the same time and look more into Food intolerance. I have undergone NAET for food allergy, which makes my digestion easier, however, I think there is more to it, like intolerance, that the NAET didn't seem to cover :( I am 35Y, 130# 5'4" and I don't really exercise, but I wouldn't say that I'm unfit. Non-smoker/drinker/drugs... Elevated cholesterol and off/on anemia with a VERY low ferritin. PO2 is usually around 96-98 standing. Started a trial of Florinef this past week. Please comments with tips/tricks to control this heartrate! I'm on partial disability because I can't work 8 hours a day anymore, just too tired to wake up. Even with 8-12 hours of sleep a night. <>
Digesting food puts more demand on the body for Oxygen. This CAN show a problem with circulation, the heart or even a lung problem. As you say you have noticed symptoms when climbing stairs, then maybe you should have your blood pressure checked and have a chat with your GP. Are you generally a fit person? i.e. normal BMI and non smoker?