Please explain the low level of hemoglobin and hematocrit in patients with myocardial infarction?

Anemia and MI: Many patients that have a heart attack have normal hemoglobin and hematocrit. However if a patient does have anemia and coronary artery disease then the anemia can make it more likely that they have a heart attack. This is because with anemia the heart and body are not getting proper oxygen and this puts a strain on the heart and can result in heart attack.