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: sulfa (sulfonamides) / penicillins / aspirin / metformin attending: chief complaint: dyspnea on exertion with presyncopal episodes major surgical or invasive procedure: 1)aortic valve replacement utilizing a 21mm pericardial bioprosthesis. 2)maze procedure history of present illness: this is a 76 year old female who was evaluated in for palpitations. she was found to have atrial fibrillation at that time. she concomitantly complained of dyspnea on exertion along with chest tightness, fatigue and presyncopal episodes. she denied syncopal episodes but did admit to 2 pillow orthopnea without pnd. echocardiogram at that time revealed aortic stenosis. subsequent cardiac catheterization confirmed aortic stenosis with of 0.8 cm2 and peak gradient of 18mmhg. coronary angiogram showed a right dominant system with only a 30% lad lesion. she had no other significant coronary disease. left ventriculogram revealed an ejection fraction of 55%. a most recent echocardiogram from showed of 0.8 cm2 with peak and mean gradients of 63 and 40mmhg. there was 1+ aortic insufficiency and 1+ mitral regurgitation. the lvef was estimated at 55%. based on the above results, she was referred for cardiac surgical intervention. past medical history: paf, htn, dm, intermittent first degree avb, hypothyroidism, cataract surgery social history: retired, lives with husband. denies tobacco and etoh. family history: non-contributory physical exam: bp 164/50, pulse 55, resp 18, o2 sat 97% on room air. pleasant female in no acute distress. oropharynx benign. neck supple without jvd. carotids 2+ with transmitted murmurs. heart sounds regular, normal s1s2, 4/6 systolic murmur noted which radiates to carotids. lungs clear. abdomen benign. extremities warm, without edema. distal pulses 2+. she is alert and oriented x3. she is neurologically intact - no focal deficits noted. pertinent results: 03:20pm glucose-99 urea n-28* creat-1.3* sodium-139 potassium-4.4 chloride-104 total co2-26 anion gap-13 03:20pm wbc-7.8 rbc-3.94* hgb-11.2* hct-33.9* mcv-86 mch-28.5 mchc-33.2 rdw-14.2 03:20pm plt count-292 03:20pm pt-12.5 inr(pt)-1.0 06:05am blood hct-29.9* 05:50am blood wbc-13.7* rbc-3.71* hgb-10.8* hct-32.0* mcv-86 mch-29.0 mchc-33.7 rdw-13.8 plt ct-98* 06:05am blood pt-13.7* inr(pt)-1.2 06:05am blood glucose-59* urean-37* creat-1.2* na-134 k-4.0 cl-94* hco3-29 angap-15 brief hospital course: mrs. was admitted on . the following day, she underwent an aortic valve replacement and maze procedure. after the operation, she was transferred to the csru. while intubated, fiberoptic bronchoscopy was performed for thick secretions and significant atelectasis. she was subsequently extubated without complications and maintained on nebulizer therapies. she weaned from inotropic support without difficulty and otherwise maintained good hemodynamics. she transferred to the floor on postoperative day two. given her history of atrial fibrillation and maze procedure, warfarin anticoagulation was resumed and dosed for a goal inr 2.0-2.5. she was initially in nsr post-op but converted back to afib (with vent. rate 70-90) on pod # 3. she responded well to lasix and by discharge, had oxygen saturations of 92% on room air. medications on admission: diltiazem 240 mg qd, lisinopril 40 mg qd, crestor 10 mg qd, amiodarone 200 mg , glyburide 1.25 mg qam, actos 15 mg qd, synthroid 125 mcg qd, warfarin discharge medications: discharge disposition: extended care facility: baypointe - discharge diagnosis: aortic stenosis, paf, htn, dm, first degree avb, hypothyroid discharge condition: stable discharge instructions: patient may shower, pat dry. no creams or powders. no lifting greater than 10 lbs for 10 weeks. no driving for one month. call office with any concerns or questions followup instructions: dr. in 4 weeks. dr. in weeks. dr. in weeks. procedure: extracorporeal circulation auxiliary to open heart surgery fiber-optic bronchoscopy other lavage of bronchus and trachea excision or destruction of other lesion or tissue of heart, open approach open and other replacement of aortic valve with tissue graft transfusion of packed cells diagnoses: unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled unspecified acquired hypothyroidism atrial fibrillation aortic valve disorders pulmonary collapse first degree atrioventricular block 

Answer: The patient is high likely exposed to