What causes heart fluttering?
Patient: I get heart fluttering now and again, had an episode today just a little while ago.  I was relaxing and watching TV with my daughter and it started beating fast.  I beared down like I was having a baby and it went away.  However, the last week or so I've had chest tightness and almost like a bruise soreness in the middle of my chest?  What the heck? Doctor: HiThe heart fluttering which you are experiencing may be a SVT (supra ventricular tachycardia ).they are small electrical problems in our heart and are very common aan amenable to treatment.they are due to re entrant circuits.I suggest you to get an EKG done and consult a cardiologist for the same.