Well, if you're talking to me, the skipping and pausing of the heart causes the blood flow to pause and stop also. In doing this blood clots can form and can travel through system causing heart attack, strokes and or death. That's why I've been on either Plavix or Cumadin the last 12 years.
Well it never fully stops, I mean I hope not lol. But slows yeah... In afib or a flutter it clots more from like crappy contractions, almost like poorly whipping batter lol. Another example of did medication choices for clotting are arteries and veins. Aspirin great for arteries, notmso much for venous clots.
If they said you heart is fine and you trust them... Then you could have POTS. Especially if it happens when you have been laying a long time and then stand up.