great explanation; that was one of my new questions with cardiomegaly and lvh
In most cases, resolving the underlying issue will cause the heart to remodel itself back to normal. The only exception I am aware of is in the case of thickened ventricular walls as with hypertrophy, this condition will not resolve. Reducing your BP should help your heart work less hard and allow it to return to it's normal size.
Hope this helps.
Jon