Fast Heart Rate With Palpitations after napping
I have a question about...there are days where i'm just dragging, and i usually take naps here and there if i have a tired day. My questions is when i lay down on my couch and take a nap i may fall asleep for 10 minutes wake up (either just wake up, or snore myself awake) and can feel my heart beating really fast with palpitations, it never skips a beat when it does this but, the more tired i am the worse it seems to be. What i dont' understand is, when i sleep sitting up, like leaning on a desk this doens't happen, only when i'm laying down. It also doesnt' happen when i'm sleeping at night, just anytime during the day when i "nap" laying down, i get palpitations and rapid heart rate. I have been diagnosed with Inappropriate Sinus Tachycardia, (nothing causing my heart to beat fast, just does for some reason). Any help would be appreciated.