Not sure but see : If your sure your pulse is normal -- less that 105 per minute and regular is probably not heart but one can have atrial fibrillation with fairly normal heart rate but would be irregular. Stress can certainly cause muscle spasms but I would think more of a twitching sensation over vibration. Is heart scan the CT scan or echocardiogram? U should see doctor and consider EKG and heart rhythm monitor
Answered 7/5/2014
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