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: patient recorded as having no known allergies to drugs attending: addendum: the patient was discharged on 2.5 mg of coumadin for tomorrow and will then have it regulated by , pa. discharge disposition: home with service facility: vna md procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of aortic valve with tissue graft diagnoses: pure hypercholesterolemia unspecified essential hypertension chronic hepatitis c without mention of hepatic coma cardiac complications, not elsewhere classified atrial fibrillation aortic valve disorders polyneuropathy in diabetes long-term (current) use of insulin congenital insufficiency of aortic valve asymptomatic human immunodeficiency virus [hiv] infection status diabetes with neurological manifestations, type ii or unspecified type, uncontrolled 

Answer: The patient is high likely exposed to