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: chief complaint: fatigue major surgical or invasive procedure: - aortic valve replacement with a size 29 mosaic tissue valve. history of present illness: this is a 79-year male who presented complaining of dyspnea on exertion. workup revealed that he had + aortic insufficiency with a normal ejection fraction. he underwent a catheterization that showed normal coronaries. based on these findings, the patient was recommended to undergo an aortic valve replacement. past medical history: af gi bleed elevated psa colonic polyps hoh social history: retired salesman. lives with wife. denies ever using tobacco. drinks 1 drink per month. family history: noncontributory physical exam: 64 sr 142/68 71" 197lbs gen: wdwn elderly man in nad skin: unremarkable heent: eomi, perrl, injected os, op benign neck: supple, from lungs: cta heart: rrr, iii/vi diastolic murmur abd: benign ext: warm, well perfused, no edema. 2+ pulses. no carotid bruits neuro: grossly intact pertinent results: echo pre-bypass: the left atrium is mildly dilated. no spontaneous echo contrast or thrombus is seen in the body of the left atrium or left atrial appendage. no spontaneous echo contrast is seen in the body of the right atrium or right atrial appendage. the left ventricular cavity is moderately dilated. overall left ventricular systolic function is moderately depressed (lvef= 35-40%). right ventricular chamber size and free wall motion are normal. the aortic root is mildly dilated at the sinus level. there is a sinus of valsalva aneurysm. the ascending aorta is mildly dilated. the descending thoracic aorta is mildly dilated. there are simple atheroma in the descending thoracic aorta. there are three aortic valve leaflets. the aortic valve leaflets are mildly thickened. there is no aortic valve stenosis. severe (4+) aortic regurgitation is seen. the aortic regurgitation jet is eccentric. the mitral valve leaflets are mildly thickened. trivial mitral regurgitation is seen. there is no pericardial effusion. 06:15am blood wbc-11.5* 06:05am blood wbc-16.5* rbc-3.45* hgb-10.9* hct-31.8* mcv-92 mch-31.5 mchc-34.2 rdw-14.4 plt ct-150 06:05am blood plt ct-150 06:15am blood urean-33* creat-1.0 k-4.3 06:05am blood glucose-146* urean-28* creat-1.0 na-136 k-4.4 cl-102 hco3-25 angap-13 brief hospital course: mr. was admitted to the on for surgical management of his aortic valve disease. he was taken directly to the operating room where he underwent an aortic valve replacement using a 29mm mosaic porcine valve. postoperatively he was taken to the cardiac surgical intensive care unit for monitoring. he later awoke neuorlogically intact and was extubated. aspirin and beta blockade were resumed. on postoperative day one, he was transferred to the step down unit for further recovery. mr. was gently diuresed towards his preoperative weight. the physical therapy service was consulted for assistance with his postoperative strength and mobility. he developed atrial fibrillation for which amiodarone was started. he converted to normal sinus rhythm. he had no complications postoperatively. he was ready for discharge on pod #4. medications on admission: nifedipine 30mg qd multivitamin discharge medications: 1. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). disp:*60 capsule(s)* refills:*0* 2. ranitidine hcl 150 mg tablet sig: one (1) tablet po bid (2 times a day). disp:*60 tablet(s)* refills:*0* 3. atorvastatin 10 mg tablet sig: one (1) tablet po daily (daily). disp:*30 tablet(s)* refills:*0* 4. aspirin 81 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po daily (daily). disp:*30 tablet, delayed release (e.c.)(s)* refills:*0* 5. metoprolol succinate 25 mg tablet sustained release 24 hr sig: one (1) tablet sustained release 24 hr po daily (daily). disp:*30 tablet sustained release 24 hr(s)* refills:*0* 6. amiodarone 200 mg tablet sig: two (2) tablet po bid (2 times a day): 400 mg x 5 days, then 400 mg daily x 1 week, then 200 mg daily ongoing. . disp:*60 tablet(s)* refills:*0* 7. furosemide 20 mg tablet sig: one (1) tablet po bid (2 times a day) for 5 days. disp:*10 tablet(s)* refills:*0* 8. potassium chloride 10 meq capsule, sustained release sig: two (2) capsule, sustained release po q12h (every 12 hours) for 5 days. disp:*20 capsule, sustained release(s)* refills:*0* discharge disposition: home with service facility: hospice and vna discharge diagnosis: as af, gi bleed, colon polyps, s/p bil. tkr discharge condition: good. discharge instructions: call with fevers, redness or drainage from incisions or weight gain more than 2 pounds in one day or five in one week. shower, no baths, no lotions, creams or powders to incisions. no heavy lifting or driving until follow up with surgeon. p instructions: dr. 2 weeks dr. 4 weeks procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of aortic valve with tissue graft other total excision of thymus diagnoses: atrial fibrillation aortic valve disorders knee joint replacement 

Answer: The patient is high likely exposed to