atrial fibrillation
"I'm on my third day of metoprolol and feel very mellow.  My heart feels quiet in the way you feel when you finally hit the pavement after a dirt road.  I feel nervous having my natural rhythm manipulated but when it comes to the heart, I'll just do what they say.  Had an attack of pericarditis 3 weeks ago and then Atrial fibrillation two days ago.  I was told that this was normal after pericarditis.  Metoprolol is recommended while heart recovers.  "