Is there any such thing as mild permanent heart damage?
That was the point I was trying to make...”mild” is one of their key words they think is hopefully pacifying.
Actually, in a sense there is. Cardiac muscle does not regenerate, unlike smooth muscle or skeletal muscle which usually does. If the heart is damaged, the electrical impulses will navigate around the dead tissue and the Atriums and Ventricles can still function effectively.
With an EKG, the path of the chemical electricity can be tracked. It is not unusual for evidence of an MI (myocardial infarction, myocardial injury, or myocardial ischemia) being detected and the Patient never even realized that it happened.
There are Bundle Branch Blocks or other ‘injuries’ which can be measured but do not severely restrict a person from continuing activities of daily living.