Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: allergies: niacin / hayfever attending: addendum: as evidenced by his echos, mr. has chronic systolic chf. discharge disposition: extended care facility: for the aged - macu md procedure: insertion of intercostal catheter for drainage arterial catheterization reopening of recent thoracotomy site open and other replacement of aortic valve with tissue graft pulmonary artery wedge monitoring transfusion of packed cells transfusion of packed cells transfusion of packed cells transfusion of other serum diagnoses: anemia, unspecified coronary atherosclerosis of native coronary artery esophageal reflux congestive heart failure, unspecified diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled cardiac complications, not elsewhere classified gout, unspecified atrial fibrillation personal history of malignant neoplasm of prostate aortocoronary bypass status aortic valve disorders hemorrhage complicating a procedure old myocardial infarction chronic systolic heart failure disorders of bilirubin excretion other heart block 

Answer: The patient is high likely exposed to