I agree, nothing to worry about. You've got yourself convinced that you have a heart problem when tests indicate you are healthy. Are you still taking the anti-anxiety medication? Do you have a follow up (other than cardio tests)? No, it is not SVT, VT and yes it would have shown up on several tests. You're heart is normal.
Do you exercise? Another thing that can cause your HR to increase quickly is deconditioning.
Many of us will experience a "normal" increase in heart rate when going from lying down to standing. Part of the criteria used to diagnose POTS is your resting heart rate increasing at least 30 BPM or above 120 more when standing and occurring with 10 minutes of going from lying down to standing up. Some experience other symptoms as well.
As the others stated you should get checked out by a physician. If it is POTS then the dr can determine the best way to manage it.
Jerz
Hi...
I agree with Sammie.
My heart rate always increases when I stand up and then goes back to normal when I sit down. Sometimes if I am laying down and gt up quickly to stand my heart will be pounding so fast! I think it is normal and just the body positioning itself and sometimes the blood flow takes longer to catch up when standing upright.
Of course we are not Dr's, but this seems pretty normal. If you are scared -- Do get it checked out, but worrying will make your heart rate increase even more. ;o)
Steph
I do not think you have an orthostatic problem. I'm not a doctor of course. However, it is very common for your heart rate to go up when you stand because you are exerting yourself. And it is quite normal for it to go down when you sit down. This is totally normal. An orthostatic problem is usually when the blood pressure is involved. When you stand up, your blood pressure can lower if your orthostatic. It is sometimes hard to get a reading even. When you stand, sometimes the blood flow does not move through the body as quickly, therefore, causeing you to feel like fainting or weak. I do not think you have a problem at all. It all sounds very normal. But if you are concerned, see a cardiologist.
Try not to panick. It does not help.
sammie
I HAVE THE EXACT SAME PROBLEM! I've had it for years--it's called Postural Orthostatic Tachycardia Syndrome (POTS), a form of dysautonomia. This condition is the result of an unbalanced autonomic nervous system. Don't worry...it's not dangerous, just a pain in the you-know-what. You're probably wondering if it will go away. The answer is...sometimes. It can get better, worse, or resolve on its own. Mine comes and goes, and is aggrevated by food, alcohol, marijuana (don't smoke anymore), and certain drugs. Your doctor will probably find nothing wrong with your heart, because this isn't a heart-related issue. It's a nervous system-related issue, and the nervous system controls the heart, which is causing you palpitations. You'll need to go to a neurologist or a doctor who specializes in the autonomic nervous system. Good luck! I am 22 and a guy, so I feel your pain.