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: no known allergies / adverse drug reactions attending: addendum: the discharge summary should reflect that the patient was admitted with systolic congestive heart failure likeley due to severe aortic stenosis. she was treated preoperatively with diuretics and ultimately had an aortic valve replacement. the discharge diagnosis list should be: discharge diagnosis: aortic stenosis -s/p avr coronary artery disease -s/p cabg x2 pmh: a-fib acute systolic congestive heart failure hypertension hyperlipidemia aortic valve stenosis mitral valve problem hypothyroidism past surgical history: s/p left ankle fracture 10 years ago repaired with "10 screws and a bar" s/p surgery for pud causing gastric outlet obstruction s/p tonsillectomy as child discharge disposition: extended care facility: manor nursing & rehab center - md procedure: single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery coronary arteriography using two catheters left heart cardiac catheterization (aorto)coronary bypass of one coronary artery open and other replacement of aortic valve with tissue graft diagnoses: anemia, unspecified coronary atherosclerosis of native coronary artery congestive heart failure, unspecified unspecified essential hypertension unspecified acquired hypothyroidism atrial fibrillation aortic valve disorders other and unspecified hyperlipidemia pressure ulcer, other site long-term (current) use of anticoagulants acute systolic heart failure do not resuscitate status closed fracture of upper end of tibia alone pressure ulcer, stage i overexertion from sudden strenuous movement 

Answer: The patient is high likely exposed to