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: mrs. is an 83 -year-old lady who was previously a patient of dr. , who had a history of rheumatic heart disease and was referred to - in for an outpatient cardiac catheterization due to recent episodes of congestive heart failure. her past medical history was significant for cardiomyopathy in . an echocardiogram demonstrated left atrial enlargement, left ventricular hypertrophy, mitral regurgitation, and thickened mitral valve. in , she was admitted to with congestive heart failure and pneumonia. at that time she was ruled out for a myocardial infarction and electrocardiogram demonstrated t-wave inversions in leads v2 through v4 and avl. she was treated with diuretics and antibiotics. in , an echocardiogram demonstrated that she had mitral stenosis with a mitral valve annulus of 1.92 cm2. she also had left atrial enlargement and mild to moderate mitral regurgitation and symmetrical left ventricular hypertrophy. on , she was again admitted to for congestive heart failure where she was treated with diuretics. on , she underwent an adenosine exercise tolerance test which was negative for ischemia. the patient presented without any complaints of shortness of breath or dyspnea on exertion and she denied ever having experienced chest pain. she denied claudication, edema, paroxysmal nocturnal dyspnea, lightheadedness, and greater than or equal to three pillow orthopnea. she was approximately 5 foot, 3 inches and 163 pounds. past medical history: included rheumatic fever at age 11, skin cancer, a transient ischemic attack in , cataracts, and minor carotid artery disease. she also has a history of hypertension and hypercholesterolemia. she denies any family history of coronary artery disease. she denies cigarettes and she denies diabetes. past surgical history: includes an excision of skin cancer from her face in . she also is status post appendectomy, status post total abdominal hysterectomy, and status post bladder suspension. she denies melena or gastrointestinal bleeding. allergies: she has an allergy to codeine, the result of which is unknown. she denies any history of allergies to shellfish or . admitting medications: aspirin 81 mg po q day, prinzide 25 mg po q day, lipitor unknown dosage once every other day, and multi-vitamin. admission laboratory data: admission labs used were her preoperative and pre-catheterization labs from . white blood cell count 8.1, hematocrit 32.6, platelets 224,000, and inr of 1.2. social history: includes that she lives with her sister and her son will be coming down from to drive the patient to the hospital. hospital course: therefore, the patient was admitted to the operating room where she underwent a mitral valve replacement with a porcine valve, model #6625lp, serial #. she tolerated this procedure well and was transferred to the recovery room with no drips, but atrial pacing. she received one unit of packed red blood cells and was extubated on postoperative day one. she had a postoperative hematocrit of 23.5. her chest tube was removed on postoperative day one. on postoperative day two, the patient was encouraged to ambulate which she did well. she was maintained on heparin initially and this was done with a heparin drip. she was also started perioperatively on coumadin. she responded very rapidly to coumadin dosing with an inr that quickly went up to 4.0. her coumadin dose was decreased, her heparinization was discontinued. she experienced a little bit of nausea and anorexia on postoperative day three. on postoperative day four she moved her bowels. her ambulation status improved and she was ambulating at level 5 on postoperative day four. her inr had decreased to 2.4 on . on postoperative day six, a bed was available for her at a rehabilitation facility and therefore arrangements were made to send her home as her heart rate still remained in the mid 80's and her blood pressure was 140's/70's. it was felt that the patient could tolerate a small increase in her beta blocker dose. therefore her beta blocker was increased to 75 mg po bid of lopressor. disposition: discharged to rehabilitation. discharge condition: good. discharge medications: lopressor 75 mg po bid, coumadin 2.0 mg po q day, aspirin 81 mg po q day, zestril 20 mg po q day, percocet 1.0 mg to 2.0 mg po q three to four hours prn pain, colace 100 mg po bid, lasix 20 mg po q day times seven days, and k-dur 20 meq po bid times seven days. follow up: follow up is in two weeks with her cardiologist, dr. , and the follow up is also with dr. in four weeks. , m.d. dictated by: medquist36 procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of mitral valve with tissue graft diagnoses: congestive heart failure, unspecified unspecified essential hypertension mitral stenosis with insufficiency 

Answer: The patient is high likely exposed to