Sounds benign: It appears you have had the appropriate tests. I suggest you limit your caffeine intact, and eat a balanced diet. If there's continued concern, you may need a cardiac stress test, which is an ekg during controlled exercise, or chemical injection. Premature ventricular contractions are "extra" beats that occur, and can be caused by caffeine, fatigue, stress, and chemical imbalance. Good luck.
Answered 4/15/2013
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