Hi,
You are little bothering about the different ECG findings in you at different times. There are many reasons as to the findings of ECG. One such is a normal finding, there are lot abnormal. Like
heart disease due to
hypertension, coronary artery disease which is commonly referred to as
heart attack, and in certain situations it is due to
cardiomyopathy, a condition where the heart muscle is diseased, which has many reasons, one of which is genetic.
Certain drugs can also cause the ECG changes which you are bothering about like
Lanoxin. As your electrophysiologist said, be assured and stay in followup with that Doctor. Based on your history, it seems that you have some degenerative condition of the heart, which has lead to heart blocks and the episodes of giddiness and syncopal attacks which are due to the reduction of blood supply to your brain during the abnormal beating of the heart.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Muhammad Azhar Hussain,
Internal Medicine Specialist