Dobutamine helps restore heart muscle contractions. and does not affect the changing area permanently of the heart muscle Hibernation myocardial infarction is another cause. of heart failure which is another component of ischemic cardiomyopathy Myocardial infarction in hibernation It is a malfunction of the heart muscle at rest. due to chronic hypoxia numb myocardial infarction It is a reversible myocardial dysfunction.