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: allerest attending: chief complaint: heartburn major surgical or invasive procedure: aortic valve replacement (23mm epic porcine valve) coronary artery bypass graft x4 (left internal mammary artery > left anterior descending, saphenous vein graft > ramus > y graft saphenous vein graft > diagonal, saphenous vein graft > obtuse marginal) history of present illness: 75 year old male with known aortic stenosis, followed by echocardiogram for several years. recently has been having "heartburn" and pressure discomfort on exertion, which lasts approximately 10-15 minutes and is relieved with rest. additionally, mean gradient across aortic valve is increasing. he is referred for surgical evaluation. past medical history: aortic stenosis hypertension hyperlipidemia gastric esophageal reflux disease subdural hematoma s/p fall obstructive sleep apnea s/p total hip replacment s/p arthroscopic left knee s/p shoulder surgery s/p rotator cuff s/p cholecystectomy social history: lives with: significant other occupation: sales for water testing company tobacco: quit 42 years ago family history: non-contributory physical exam: pulse: 77 resp: 16 o2 sat: 98% b/p right: left: 120/69 height: 5'9" weight: 200 lb general: nad skin: dry intact heent: perrla eomi neck: supple full rom chest: lungs clear bilaterally heart: rrr irregular murmur 2/6 sem abdomen: soft non-distended non-tender bowel sounds + extremities: warm , well-perfused edema- none varicosities: none neuro: grossly intact x pulses: femoral right: 2+ left: 2+ dp right: 2+ left: 2+ pt : 1+ left: 1+ radial right: 2+ left: 2+ carotid bruit no bruits pertinent results: echo: pre cpb: no spontaneous echo contrast or thrombus is seen in the body of the left atrium or left atrial appendage. no atrial septal defect is seen by 2d or color doppler. there is mild symmetric left ventricular hypertrophy. the left ventricular cavity size is normal. overall left ventricular systolic function is low normal (lvef 50-55%). right ventricular chamber size and free wall motion are normal. the ascending aorta is mildly dilated. there are simple atheroma in the aortic arch. there are simple atheroma in the descending thoracic aorta. there are three aortic valve leaflets. the aortic valve leaflets are severely thickened/deformed. there is moderate aortic valve stenosis (valve area 1.0-1.2cm2). trace aortic regurgitation is seen. there is no mitral valve prolapse. physiologic mitral regurgitation is seen (within normal limits). post cpb: there is preserved biventricular systolic function.thre is a well seated, well functioning bioprosthesis in the aortic position. there is no ai visuailzed. remaining study is unchanged from prebypass. cxr: the patient is status post median sternotomy and coronary artery bypass surgery. cardiomediastinal contours are similar in appearance compared to prior postoperative radiographs allowing for patient rotation. pulmonary vascularity is normal. slight worsening in degree of atelectasis in the left lower lobe with persistent elevation of left hemidiaphragm and small left pleural effusion. small right pleural effusion is either new or increased from prior study (previous exam did not have a lateral radiograph, limiting comparison). no visible pneumothorax. calcified pleural plaque is incidentally noted. 12:56pm blood wbc-14.4*# rbc-3.36*# hgb-11.0*# hct-31.0*# mcv-92 mch-32.8* mchc-35.6* rdw-13.3 plt ct-116* 08:44am blood wbc-9.1 rbc-3.37* hgb-10.8* hct-30.6* mcv-91 mch-32.2* mchc-35.4* rdw-14.4 plt ct-102*# 12:56pm blood pt-14.4* ptt-42.0* inr(pt)-1.2* 04:25am blood pt-14.3* inr(pt)-1.2* 01:53pm blood urean-25* creat-1.0 na-139 k-4.3 cl-110* hco3-23 angap-10 08:44am blood glucose-113* urean-32* creat-1.0 na-137 k-4.0 cl-101 hco3-28 angap-12 04:25am blood urean-31* creat-1.0 na-136 k-3.9 cl-101 08:08pm blood mg-3.1* 04:25am blood mg-2.2 brief hospital course: mr. was admitted same day as surgery and underwent aortic valve replacement and coronary artery bypass graft surgery, see operative report for further details. he was transferred to the intensive care unit for post operative management. in the first twenty four hours he was weaned from sedation, awoke and was extubated without complications. he continued to progress except some confusion and narcotics were discontinued and he was placed on tylenol which was effective for pain. he additionally went into rapid atrial fibrillation then junctional rhythm with hypotension treated with fluids and pacing. electrophysiology was consulted for arrhythmia, all beta blockers were stopped and he continued in atrial fibrillation, rate controlled 70-90's. he continued to progress and was started on coumadin for atrial fibrillation. he was transferred to the floor for the remainder of his care. he was restarted on lopressor and amiodarone bolus 150 mg once with conversion to sinus rhythm. he continued in sinus rhythm and ep reevaluation felt he was stable with beta blockers but thought no further amiodarone due to sinus node dysfunction. epicardial wires removed and coumadin was continued. he was ready for discharge to rehab ( ) on post operative day five. he should remain on continuous telemetry while in rehab. all appropriate medications and follow-up appointments were given. medications on admission: lisinopril 40mg daily simvastatin 40mg daily asa 81mg daily metoprolol 12.5mg daily omeprazole 40mg daily celebrex 200mg prn tylenol arthritis prn mvi daily discharge medications: 1. acetaminophen 325 mg tablet sig: 1-2 tablets po q4h (every 4 hours) as needed for fever/pain. tablet(s) 2. outpatient lab work labs: pt/inr for coumadin ?????? indication atrial fibrillation goal inr 2-2.5 first draw rehab physician to dose coumadin based on inr while at rehab then please contact heart center coumadin clinic phone fax - and they will follow as outpatient 3. simvastatin 40 mg tablet sig: one (1) tablet po once a day. 4. prilosec 40 mg capsule, delayed release(e.c.) sig: one (1) capsule, delayed release(e.c.) po once a day. 5. aspirin, buffered 81 mg tablet sig: one (1) tablet po once a day. 6. colace 100 mg capsule sig: one (1) capsule po twice a day. 7. metoprolol tartrate 25 mg tablet sig: 0.5 tablet po bid (2 times a day): please do not titrate due to sinus node dysfunction as per ep attending . 8. warfarin 1 mg tablet sig: one (1) tablet po once (once): please give 1 mg on and check inr for further dosing - goal inr 2.0-2.5 for atrial fibrillation - please titrate slowly - received 1mg on inr 1.2. 9. lisinopril 5 mg tablet sig: one (1) tablet po daily (daily). 10. furosemide 40 mg tablet sig: one (1) tablet po once a day. 11. potassium chloride 10 meq tablet extended release sig: two (2) tablet extended release po once a day. 12. outpatient lab work please check chem 7 to evaluate electrolytes discharge disposition: extended care facility: northeast - discharge diagnosis: aortic stenosis s/p avr coronary artery disease s/p cabg atrial fibrillation hypertension hyperlipidemia gastroesophageal reflux disease obstructive sleep apnea (no mask at home) discharge condition: alert and oriented x3 nonfocal ambulating with walker, needs more assistance in am due to arthritis incisional pain managed with tylenol prn incisions: sternal - healing well, no erythema or drainage leg left - healing well, ecchymosis, no erythema or drainage. edema +1 lower extremities discharge instructions: please shower daily including washing incisions gently with mild soap, no baths or swimming until cleared by surgeon. look at your incisions daily for redness or drainage please no lotions, cream, powder, or ointments to incisions each morning you should weigh yourself and then in the evening take your temperature, these should be written down on the chart no driving for approximately one month and while taking narcotics, will be discussed at follow up appointment with surgeon when you will be able to drive no lifting more than 10 pounds for 10 weeks please call with any questions or concerns **please call cardiac surgery office with any questions or concerns . answering service will contact on call person during off hours** followup instructions: you are scheduled for the following appointments surgeon: dr at mwhc at 9 am cardiologist: dr at 9am please call to schedule appointments with your primary care dr in weeks **please call cardiac surgery office with any questions or concerns . answering service will contact on call person during off hours** labs: pt/inr for coumadin ?????? indication atrial fibrillation goal inr 2-2.5 first draw rehab physician to dose coumadin based on inr while at rehab then please contact heart center coumadin clinic phone fax - and they will follow as outpatient please titrate up coumadin slowly - history of subdural hematoma from fall in past procedure: (aorto)coronary bypass of three coronary arteries single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery open and other replacement of aortic valve with tissue graft diagnoses: other iatrogenic hypotension obstructive sleep apnea (adult)(pediatric) coronary atherosclerosis of native coronary artery esophageal reflux unspecified essential hypertension atrial fibrillation aortic valve disorders unspecified transient mental disorder in conditions classified elsewhere other and unspecified hyperlipidemia other left bundle branch block sinoatrial node dysfunction other fluid overload 

Answer: The patient is high likely exposed to