1. Palpitations (sensation of the heart beating) after standing is common. People tend to feel their heart beat more often when they are stressed, sleep deprived, caffeinated, etc. It does not necessarily point to a problem. Sleep apnea can increase adrenergic tone (adrenaline) and make the heart beat harder and faster and high thryoid hormone levels also can affect how hard the heart beats or feels like it is beating. The only additional test I would consider is a heart monitor to see what your heart rhythm is when you are having symptoms. I suspect it is a normal rhythm just beating harder than normal.
2. Lots of people have murmurs. Most murmurs are not of clinical significance. Most of the time when someone really has a heart problem, there is a strong suspicion of that after the first meeting with a cardiologist. If nothing was mentioned about a specific diagnosis, it is less like that something significant will show up with testing.
3. If you have been on these medications and they are not new, it is unlikely they are causing it. A water pill can sometimes cause dehydration and cause the heart to beat harder when you stand up. Ask you doctor if they think this could be playing a role in it.
4. Beta blockers block the adrenaline receptor on the heart and decrease the strength of contraction. This can help people be less aware of their heart rhythm.
5. If your thyroid stimulating hormone is high, than your actually thyroid hormone levels are probably slightly low. this usually does not cause palpitations. If your hormone levels are high, that can cause palpitations. Your doctors will know this after your repeat labs come back.
I hope this helps.
hi, im 33yrs old from the philippines, i have been diagnosed with WPW last oct. of 2006, had my 1st ablation with eps last apr of 2007 and it wasnt a success, had the same procedure last feb of this year and according to my doctor it was a success, my problem is that im still having a lot of skit beats everyday. is it normal or what, cause its really bothering me. and im still feeling dizzy all the time, dizziness feels like im going to fall, like im out of balance everytime. the dizziness occurred even before my diagnosis. please advise me on this, really need some help understanding what im going through, thanks for your time and hope to hear from you. God bless.