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I understand your concern. In ECG (electrocardiogram), a complete view of the cardiac activity or chamber enlargement cannot be accurately determined. I have reviewed your attached report (attachments removed to protect the patient's identity). Let us start with heart rate, which is determined by R-R interval, coming around 90 per minute. The rhythm is regular, and every beat arrives on time after the last beat. The P wave is best determined in lead 2 of 12 lead ECG. So from here, it is a bit broad, possibly due to atrial enlargement. PR interval seems slightly prolonged here, but that can be best determined in full 12 lead ECG because, in amyloidosis, there are chances of atrial enlargement and AV (atrioventricular) heart block. QRS wave seems fine. There is a normal duration and amplitude. However, I can see some changes in the QRS pattern, which may signify the right bundle branch block and can be confirmed by 12 lead ECG. QT interval after that is normal. Your ECG shows non-specific changes of atrial chamber abnormality and likely bundle branch block. This can be accurately analyzed in a 12 lead ECG. I hope this information will work. Thanks.