To your question, the answer is yes. Most of us, suffering from what you describe, had an initial panic attack that made the body/mind go into a state where we monitor everything - heart rhythm, dizziness, etc. Things we didn't notice before.
That said, what you describe sounds to me more like a response to a low blood pressure. After exercise, the blood vessels are relaxed and the blood pressure is reduced. If your baseline is now 100/60 (same as mine), your heart must compensate by beating faster if the blood pressure goes any lower. The same happens when you eat a heavy meal. Your blood vessels are so nice and flexible that your heart must beat a bit faster to keep up your blood pressure to prevent you from fainting or getting dizzy.
Be happy. Your body works like it's supposed to :)
Thanks for the reply. It's very odd what's happened both my pulse and blood pressure have increased following that one episode, and it's left me pretty confused as to why. When I wake up my heart beats around 65-70, and a blood pressure of 110/70. I then take my Bisoprolol and my heart rate only gets faster throughout the day. Can A beta blocker stop working suddenly?
I can only answer for myself, but my experience with taking selective beta blockers (like metoprolol, atenolol, bisoprolol) is the same as you experience. I believe it has something to do with lowering the blood pressure so the heart must beat more rapid to keep the pressure up.
I switched from metoprolol to propranolol which has less effect on the blood pressure (as it also constrict the arteries slightly) and the problem was more or less gone. It also works great preventing panic attacks, in my opinion. You may consider asking your doctor if he thinks this could work for you too.
Also be aware that your heart rate during the day will never be as slow as when you wake up, regardless of beta blockers, unless your dose of beta blockers is high. The heart rate is supposed to increase during a more or less stressful day, after meals, coffee, etc. I wake up with a heart rate of 50-60 (depending on temperature, stress, how well I've slept, etc) and during the day at work it's in the high 60s to low 80s, and it slows again in the evening.
Again thanks for the reply. It's nice to know that there are people out there who go through the same thing or who can relate.
I got the problem figured out. It was some sort of reaction to the bisoprolol. I had to go to the hospital cause my resting heart kept increasing and eventually wouldnt come down below 140, but the day I switched back to atenolol it was all resolved and now I'm back to a resting heart rate in the 60's and lower blood pressure.
Phew glad I got off bisoprolol when I did.