First, I am a cardiologist and I have never heard the phrase "excess electricity" in the heart. Thus, I am not able to comment on this.
Second, it is very difficult to fully interpret your ECG because one must always put the interpretation in a clinical context. What I can tell you is that your heart appears to be in a normal rhythm (called sinus rhythm). There are some other findings on the ECG that are "non-specific" to any one particular condition and it thus would be irresponsible of me and unfair to you if I were to attempt to give you a definitive diagnosis on the basis of the ECG alone.
If you are uncomfortable with your internal medicine doctor's interpretation, I suggest that you make an appointment with a cardiologist. He/she should not only be able to easily interpret your ECG but is likely to be helpful with anything that may be concerning you regarding your heart.
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