Racing Heart and Lightheadedness

[WGB]

Mainly at night when I am laying down my heart to race and then I get very lightheadedness.They only last about 30 seconds or less.My age is 43.
I did check with my doctor and she told me my heart sound strong and I did a 30 day monitor.The 30 monitor was when I feel something coming on I would push a buttom and the machaine with record the heart beat for 1 min.That came back with nothing.
My first thought was strss but I am not sure now.

[edgeplayer]

If you have the symptoms mostly at night and especially while lying on your left side then you may have Vagally Mediated Paroxysmal Atrial Fibrillation (see www.afibbers.org).

[lavenderlady4556]

I have recently been going through symptoms I thought were a panic attack. I would get chest pain, nausea, numbness, lightheadedness (feeling like I was going to faint) and a feeling that something bad was going to happen. I was going to die or pass out or go crazy. Then afterward I would feel mentally drained and shaky and chilled. So I finally decided that I should get some treatment after a couple of months where I had an attack about 1 a week but was always scared that it was going to happen. My doctor said it sounded like panic but wanted to check my heart. I did a holter monitor and it came back tachycardia so he sent me to a cardiologist. The cardiologist ordered an echo which was normal and then a tilt test and this was positive. So he ended up diagnosing me with neurocardiogenic syncope. I am supposed to watch my diet and water intake. But this really doesnt help me. Im still having attacks and Im still frustrated and scared. Only thing now is that I have to worry that I really will pass out (where as before I could say "Its just panic- it will go away and you are fine"). Is there any way that a positive tilt test could still indicate panic attack? What else can I do for neurocardiogenic syncope?

[CCF-M.D.-CA]

You probably have a type of atrial tachycardia. This is a fairly common condition and can be caused by either primary heart problems or something unrelated such as thyroid disease, lung disease, blood problems and others. I would suggest a comprehensive laboratory worlkup ( invcludign blood levels of reb and white blood cells, a chest x ray and thyroid function tests). If these all are normal then a 24 to 48 hour holter monitor which would look for any tachycardia. If one is found then you may need an electrophysiological procedure called an ablation, where the focus of the extra haert beats is located and removed.