1. The attached ECG shows "Complete Right bundle branch block" beyond doubts. The PR interval is normal. There is no left hemiblock. There is possibly left atrial abnormality (if clinically correlating).
2. It shows QRS duration more than 120 ms (3 squares) in multiple leads. However, that is not the issue; because QRS duration is taken from the lead where it is maximum.
3. RBBB can be totally benign entity or it may be associated with underlying heart disease
. In case of any suspicion, we advise ECHO or cardiac ultrasound
to sort out the issue.
Hope this helps. Feel free to discuss further.