In hospital, George informs his doctors that 2 years ago he suffered a myocardial infarction.

In hospital, George informs his doctors that 2 years ago he suffered a myocardial infarction. He reports to his doctors that he has recently been feeling short of breath (particularly when he exercises) and the doctor suspects that it was this shortness of breath that lead to him fainting while up the ladder. Following a chest X-ray, it is determined that George is suffering from pulmonary oedema due to congestive heart failure.

What structural changes would you expect to see in George's heart and why might these be beneficial in the case of heart failure?