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: history of present illness: this is an 80-year-old woman with a known history of aortic stenosis followed by echocardiogram three years prior to admission. immediately prior to admission her aortic valve area was noted to be 0.6 cm2 with a mean gradient of 70 mmhg. she was referred to dr. for aortic valve replacement surgery. past medical history: 1. sleep apnea, in bipap at home. 2. scarlet fever. 3. status post tonsillectomy and adenoidectomy. 4. status post appendectomy. medications on admission: aspirin 81 mg p.o. q.d., claritin p.r.n. allergies: no known drug allergies. family history: mom had a history of atrial fibrillation; died at years of age. the patient's father died at age years of age. social history: the patient lives alone. husband is afflicted with alzheimer's disease. the patient has a tobacco history of about seven cigarettes per day times the past 46 years. the patient admits to drinking three to four drinks per day. review of systems: the patient was otherwise healthy. she had no skin lesions. the patient had bilateral hearing aides. the patient denies chest pain, shortness of breath, and palpitations. the patient denies nausea, vomiting, and diarrhea. the patient also denies any history of melena or bright red blood per rectum. the patient denies dysuria and polyuria. the patient denies any neurologic symptoms of some lightheadedness. the patient denies any history of diabetes or thyroid disease. physical examination on presentation: on admission pulse was 72, blood pressure 169/74, respiratory rate 20, height was 5 feet 4 inches, weight 182 pounds. general appearance revealed a healthy-appearing woman, consistent with stated age, in no apparent distress. skin was intact. no lesions. heent revealed pupils were equal, round, and reactive to light and accommodation; with extraocular muscles intact. anicteric, noninjected. moist mucous membranes without lesions. neck was supple. no jugular venous distention. no cervical lymphadenopathy was appreciated. chest was clear to auscultation bilaterally. heart had a regular rate and rhythm, a grade blowing murmur radiating to both carotids. abdomen was soft, nontender, and nondistended, plus bowel sounds. no hepatosplenomegaly was noted. extremities were warm and well perfused. no clubbing, cyanosis or edema. no varicosities were appreciated on examination. neurologically, the patient was alert and oriented times three, moved all extremities, followed commands. cranial nerves ii through xii were intact. sensation was intact. strength was in the upper and lower extremities. pulse examination revealed femoral pulses were 2+ bilaterally. dorsalis pedis pulses were 1+ bilaterally. posterior tibialis pulses were 1+ bilaterally. radial pulses were 2+ bilaterally. radiology/imaging: catheterization performed on revealed coronaries were without significant stenosis. there was significant aortic stenosis, mild mitral regurgitation, pulmonary hypertension. the aortic valve area was 0.6 cm2 with a mean gradient of 54 mmhg. ejection fraction was found to be 75%. hospital course: the patient was admitted to the on . on the day of admission the patient went to the operating room with dr. where she had an aortic valve replacement with a #21 valve. cardiopulmonary bypass time was 109 minutes, and her cross-clamp times was 74 minutes. the patient tolerated the procedure well without any significant complications. please see previously dictated operative note for more details. the patient was transferred from the operating room to the cardiothoracic surgery recovery units. on transfer, the patient was intubated. the patient remained intubated when she left the operating room and was only on a propofol drip. on the first night after surgery the patient was extubated, and her course was only complicated by mild hypertension requiring a nitroglycerin drip of 0.5. on postoperative day one, was weaned off any vasoactive medications and was transferred to the patient care floor. on postoperative day two, her chest tubes were removed. her foley catheter was removed, and her postoperative course continued to be uncomplicated. on postoperative day three, the patient's course was complicated by an episode of asymptomatic atrial fibrillation with a rapid ventricular response, with a ventricular rate to the 130s to 150s. intravenous lopressor 10 mg was given with conversion to normal sinus rate in the 60s. at this point the patient's magnesium level was repleted and she was loaded with amiodarone. the patient remained on amiodarone and lopressor throughout the duration of her hospitalization. the patient's pacer wires were removed on postoperative day four, and her course was otherwise uncomplicated. by postoperative day five, the patient was discharged to home with services. condition at discharge: condition on discharge was stable. discharge status: discharged to home with services. discharge diagnoses: status post aortic valve replacement with #21 valve on . medications on discharge: 1. lasix 20 mg p.o. q.d. times 10 days. 2. potassium chloride 20 meq p.o. q.d. while on lasix. 3. aspirin 81 mg p.o. q.d. 4. amiodarone 400 mg p.o. b.i.d. times seven days then q.d. until followup. 5. atenolol 25 mg p.o. q.d. 6. captopril 12.5 mg p.o. t.i.d. 7. percocet one to two tablets p.o. q.4-6h. p.r.n. 8. colace 100 mg p.o. b.i.d. 9. tylenol 650 mg p.o. q.6h. p.r.n. 10. motrin 400 mg p.o. q.6h. p.r.n. 11. amaryl 1 mg p.o. q.d. discharge followup: the patient was to follow up with her primary care physician, . , in one week. the patient was to follow up with dr. as her blood sugar was noted to be elevated during this hospitalization. clinic began amaryl 1 mg p.o. q.d.; to be followed by her primary care physician, . . follow up with dr. in three to four weeks. will remove staples in three weeks. , m.d. dictated by: medquist36 d: 10:41 t: 10:07 job#: procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of aortic valve diagnoses: coronary atherosclerosis of native coronary artery congestive heart failure, unspecified cardiac complications, not elsewhere classified atrial fibrillation aortic valve disorders unspecified sleep apnea 

Answer: The patient is high likely exposed to