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: motrin attending: chief complaint: dyspnea on exertion major surgical or invasive procedure: aortic valve replacement (27mm mosaic porcine valve) history of present illness: 49 y/o male admitted to hospital in early for gastritis. a heart murmur was noted on exam and prompted an echo. echo showed severe aortic insufficiency with a preserved lvef. he was then referred for aortic valve replacement. past medical history: aortic insufficiency, rectal bleed, back pain, wrist fracture x 2, s/p rotator cuff surgery, s/p left wrist surgery social history: smoked 2ppd x 30yrs. quit early . rare etoh. family history: brother died at age 11 of "heart disease" physical exam: vs: 86 14 140/80 72" 185# gen: wdwn female in nad skin: w/d well-healed scar in upper back heent: eomi, perrl, ncat, op benign neck: supple, from, -jvd chest: ctab -w/r/r heart rrr 1/6 systolic, diastolic murmur abd: soft, nt/nd, +bs ext: warm, well-perfused -edema neuro: a&o x 3, mae, non-focal pertinent results: echo : pre-bypass: no spontaneous echo contrast or thrombus is seen in the body of the left atrium/left atrial appendage or the body of the right atrium/right atrial appendage. no atrial septal defect is seen by 2d or color doppler. left ventricular wall thickness, cavity size and regional/global systolic function are normal (lvef >55%) right ventricular chamber size and free wall motion are normal. the ascending, transverse and descending thoracic aorta are normal in diameter and free of atherosclerotic plaque to 35 cm from the incisors. the aortic valve is bicuspid. moderate to severe (3+) aortic regurgitation is seen. the aortic regurgitation jet is eccentric, directed toward the anterior mitral leaflet. the mitral valve leaflets are mildly thickened. physiologic mitral regurgitation is seen (within normal limits). there is no pericardial effusion. the tricuspid valve has physiologic tr. post_bypass: preserved normal biventricular systolic function. overall lvef 55%. thoracic aortic contour is intact. a bioprosthetic valve is seen in the native aortic position well seated and has a mean gradient of 12mm of hg across the valve. there is no residual aortic regurgitation. brief hospital course: mr. was a same day admit after undergoing all pre-operative work-up as an outpatient. on day of admission he was brought to the operating room where he underwent an aortic valve replacement. please see operative note for surgical details. following surgery he was transferred to the cvicu for invasive monitoring in stable condition. later on op day he was weaned from sedation, awoke neurologically intact and was extubated. on post-op day one his chest tubes were removed and he was started on beta-blockers and diuretics. he was gently diuresed towards his pre-op weight. later on this day he was transferred to the step-down floor for further care. on post-op day three his chest tubes were removed. he has remained hemodynamically stable & is ready to be discharged home. medications on admission: zantac 150mg qd, aciphex 20mg qd discharge medications: 1. aspirin 81 mg tablet, chewable sig: one (1) tablet, chewable po daily (daily). disp:*30 tablet, chewable(s)* refills:*2* 2. metoprolol tartrate 50 mg tablet sig: one (1) tablet po bid (2 times a day). disp:*60 tablet(s)* refills:*1* 3. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). disp:*60 capsule(s)* refills:*1* 4. hydromorphone 2 mg tablet sig: 1-2 tablets po q3h (every 3 hours) as needed. disp:*40 tablet(s)* refills:*0* 5. pantoprazole 40 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po q24h (every 24 hours). disp:*30 tablet, delayed release (e.c.)(s)* refills:*2* 6. furosemide 20 mg tablet sig: one (1) tablet po bid (2 times a day) for 5 days. disp:*10 tablet(s)* refills:*0* 7. potassium chloride 10 meq capsule, sustained release sig: two (2) capsule, sustained release po twice a day for 5 days. disp:*20 capsule, sustained release(s)* refills:*0* discharge disposition: home with service facility: hospice and vna discharge diagnosis: aortic insufficiency s/p aortic valve replacement pmh: gastritis, rectal bleed, back pain, wrist fracture x 2, s/p rotator cuff surgery, s/p left wrist surgery discharge condition: good discharge instructions: please shower daily including washing incisions, no baths or swimming monitor wounds for infection - redness, drainage, or increased pain report any fever greater than 101 report any weight gain of greater than 2 pounds in 24 hours or 5 pounds in a week no creams, lotions, powders, or ointments to incisions no driving for approximately one month no lifting more than 10 pounds for 10 weeks please call with any questions or concerns p instructions: dr. in 4 weeks dr. in weeks dr. in weeks procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of aortic valve with tissue graft diagnoses: aortic valve disorders 

Answer: The patient is high likely exposed to