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 48-year-old female has a history of rheumatic fever and mitral valve disease. she is status post mitral commissurotomy in the 80s and then had a minimally invasive mitral valve repair in with a ring. she has had dizziness, shortness of breath, fatigue and palpitations over the past two to three years which has been increasing over the past few months. she underwent cardiac catheterization on , which revealed an ejection fraction of 47%, global hypokinesis, 3+ mitral regurgitation and normal coronary arteries. she is now admitted for anticoagulation prior to mitral valve replacement. past medical history: significant for history of atrial fibrillation. she is status post ablations in , and . history of mitral valve disease, status post closed mitral commissurotomy in the 80s and mitral valve repair in . history of pulmonary hypertension. medications on admission: 1. lopressor 50 mg po b.i.d. 2. micro-k 30 meq po b.i.d. 3. lasix 20 mg po q.d. allergies: she is allergic to amiodarone. she had increased lfts with amiodarone. family history: unremarkable. social history: she does not smoke cigarettes. she does not drink alcohol. review of systems: unremarkable. physical examination: she is a well-developed female in no apparent distress. vital signs stable. afebrile. head, eyes, ears, nose and throat exam: normocephalic, atraumatic. extraocular movements intact. oropharynx benign. neck was supple, full range of motion. no lymphadenopathy or thyromegaly. carotids 2+ and equal bilaterally without bruits. lungs were clear to auscultation and percussion. cardiovascular exam: irregular rate and rhythm with a 2/6 systolic ejection murmur and a positive s3. abdomen was soft, nontender with positive bowel sounds, no masses or hepatosplenomegaly. extremities were without cyanosis, clubbing or edema. pulses were 2+ and equal bilaterally throughout. hospital course: she was admitted and she had been off her coumadin so she was started on heparin and on , she underwent mitral valve replacement with a #25 mm mechanical valve and a tricuspid valve repair with a 30 mm annuloplasty . the cross >.......<time was 70 minutes, so the bypass time was 170 minutes. she tolerated the procedure well and was transferred to the csru on milrinone, neo and propofol. she had a stable postoperative night. she remained intubated on her postoperative night and was extubated on postoperative day number one. she was weaned off her milrinone and was just on neo. she had her chest tubes discontinued on postoperative day number two. she did have thrombocytopenia with a platelet count of 42 and was seen by hematology who felt she did not have >........<heparin. her platelets did come back up and she lost all her drips and was transferred to the floor on postoperative day number three. she continued to have a stable postoperative course except for she did have a rapid atrial fibrillation up to the 150s. electrophysiology was following her and she was eventually increased to lopressor 75 mg q.i.d. and this kept her rate in the 60s with occasional increases up to the 100s. she also remained in the hospital for anticoagulation and on postoperative day number 11, she was discharged to home in stable condition. electrophysiology felt that she needed follow-up in four to six weeks with them as they could not use the amiodarone due to her increased lfts when she was on amiodarone in the past, and the fact that it was not effective. they also felt ablation was appropriate again and they would like to re-evaluate her in four to six weeks. laboratories on discharge: white blood cell count 13.7, hematocrit 29.5, platelet count 529,000. sodium 139, potassium 4, chloride 101, co2 23, bun 13, creatinine 0.7, blood sugar 100. pt 21.5 with an inr of 3.1. medications on discharge: 1. lasix 20 mg po b.i.d. times seven days, then 20 mg po q.d. 2. colace 100 mg po b.i.d. 3. percocet po q. 4-6 hours prn pain. 4. lopressor 75 mg po q. 6 hours. 5. potassium 30 meq po b.i.d. 6. coumadin 6 mg po q.h.s. discharge instructions: she will have her inr checked q. monday, wednesday, friday, next week and followed by dr. and she will see dr. in one to two weeks and have an appointment with in four weeks. , m.d. dictated by: medquist36 procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of mitral valve open heart valvuloplasty of tricuspid valve without replacement diagnoses: thrombocytopenia, unspecified anemia, unspecified congestive heart failure, unspecified atrial fibrillation atrial flutter personal history of venous thrombosis and embolism diseases of tricuspid valve rheumatic mitral insufficiency 

Answer: The patient is high likely exposed to