Who Do You Ask: To most people, the answer would be "no." you'd figure out what chamber they come from and leave it at that. I and my colleagues specialize in heart rhythms (electrophysiology) and to us, there are at least a half-dozen varieties, which we group on how to approach them for treatment. On a cellular level, there are also a couple of ways the extra beat starts, which could be another way to view it.
Answered 4/29/2014
5k views
Yes: In the sense that they can come from different parts of the heart & will look different.
Answered 4/29/2014
4.9k views
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