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: please add to the past medical history: chronic systolic heart failure discharge disposition: home with service facility: homecare md procedure: single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery (aorto)coronary bypass of two coronary arteries open and other replacement of aortic valve with tissue graft diagnoses: thrombocytopenia, unspecified anemia, unspecified coronary atherosclerosis of native coronary artery pure hypercholesterolemia unspecified essential hypertension atrial fibrillation aortic valve disorders hypertrophy (benign) of prostate without urinary obstruction and other lower urinary tract symptom (luts) other and unspecified angina pectoris other late effects of cerebrovascular disease chronic systolic heart failure unspecified hereditary and idiopathic peripheral neuropathy conduction disorder, unspecified 

Answer: The patient is high likely exposed to