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 a 66 year-old female with a history of mitral regurgitation who had a mitral valve repair and ring anuloplasty in . since then she recently presented with congestive heart failure and anemia. the echocardiogram showed mitral stenosis. past medical history: 1. atrial fibrillation. 2. congestive heart failure. 3. hypertension. 4. hyperlipidemia. 5. status post mitral valve repair with anuloplasty ring. past surgical history: hysterectomy, cholecystectomy and eye surgery. allergies: no known drug allergies. medications on admission: premarin, aspirin, lopressor, lasix, diovan and multivitamins. preoperative laboratories: sodium 138, k 4.2, chloride 101, co2 29, bun 21, creatinine 0.8, blood sugar 90. preoperatively, white blood cell count was 10.4, hematocrit 39.8 and a platelet count of 333,000. inr was 1.1, pt was normal. physical examination: the patient was regular rate and rhythm with audible diastolic murmur. the lungs were clear. the abdominal examination was benign. she had normal distal pulses in her feet and no varicose disease. cardiac catheterization showed an ejection fraction of 68% with pa pressures of 63/26. mitral valve area was decreased and the patient had normal coronaries. ho course: on the patient underwent mitral valve replacement with a mosaic tissue #25 mm valve through a minimally invasive approach by dr. . the patient was transferred to the cardiothoracic intensive care unit in stable condition. on postoperative day one the patient was awake and following commands. she received some repletion with hespan and was on milrinone and was continued on her perioperative vancomycin. postoperatively, hematocrit was 24.8 with a k of 4.0, bun 12 and a creatinine of 0.5. her lungs were clear bilaterally. she had some trace edema. she had palpable dorsalis pedis pulses. her incisions were intact. she was starting to wake up and sedation was held with plans to extubate her during the day. she was seen by case management. on postoperative day two his creatinine was stable at 0.5. her hematocrit remained in the low 20s. she had some rhonchi. she had normal heart sounds. she had 1+ edema. she remained on a nitroglycerin drip at 0.75 mics per kilo per minute and was completing his perioperative vancomycin. her chest tubes were discontinued. she started her lasix diuresis. she remained on sliding scale insulin as needed. her diet was advanced. she was seen by physical therapy and had been extubated and was transferred out to the floor. on postoperative day three she had several episodes of atrial fibrillation. she received an amiodarone bolus and intravenous lopresor and then switched to po amiodarone. those were her two primary cardiac medications. she had a blood pressure of 120/85 with a heart rate of 62, sating 90% on room air. hematocrit was stable at 25. she had some coarse breath sounds. her heart was regular rate and rhythm. her lytes were repleted and her lopressor was increased to 50 mg po b.i.d. she continued to work with physical therapy. on postoperative day four she completed her antibiotics and had no acute events over the 24 hour period. she was hemodynamically stable. she was still sating on 89% on room air and 95% with 1 liter. she had bibasilar crackles. heart was regular rate and rhythm. incision was clean, dry and intact. extremities had trace edema. her pacing wires were discontinued. she continued to ambulate. she continued her diuresis and was screened for rehab. onperative day five she again remained stable with a good blood pressure and was now sating 91% on room air still with some crackles. her incisions were clean, dry and intact. she had 2+ edema bilateral lower extremities. she received zofran times one dose for nausea with the plans to try and discharge her the following day. on postoperative day six she did spike a temperature to 101.3 and remained afebrile at 98.6. her urinalysis was negative. she was now sating 92% on room air with a blood pressure of 112/40 and was in sinus rhythm at 70. her lungs were clear. heart regular rate and rhythm. incisions were clean, dry and intact with trace edema. she remained afebrile and was discharged to home on the 25th with instructions to follow up with dr. in two weeks her primary care physician and instructions to follow up with dr. in one month in the office postoperatively. laboratories on discharge white blood cell count 9.5, hematocrit 25.5, platelet count 257,000, k 5.1, bun 23, creatinine 0.7. she was below her preoperative weight by 3 kilograms. her examination was benign. her extremities were warm and well perfuse. she still had a faint murmur. her right thoracotomy site looked clean and intact. she was alert and oriented. discharge medications: premarin 0.3 mg po q day, zocor 20 mg po q.d., captopril 12.5 mg t.i.d., enteric coated aspirin 325 mg po q.d., colace 100 mg po b.i.d., amiodarone 400 mg po q day, lopresor 50 mg po b.i.d., lasix 20 mg po b.i.d. times seven days and then q.d., k-ciel 20 milliequivalents po b.i.d. times seven days and then q.d. single multivitamin q.d., zantac 150 mg po b.i.d., percocet one to two tabs po prn q 4 to 6 hours for pain, ibuprofen 400 mg po prn q 4 to 6 hours, tylenol 650 mg po prn q 4 to 6 hours. discharge status: to home. discharge diagnoses: 1. status post minimally invasive mitral valve replacement with pericardial valve. 2. status post mitral valve anuloplasty in . 3. history of congestive heart failure. 4. history of atrial fibrillation. 5. hypertension. 6. hypercholesterolemia. again, the patient was discharged to home on in stable condition. , m.d. dictated by: medquist36 procedure: combined right and left heart cardiac catheterization coronary arteriography using two catheters angiocardiography of left heart structures diagnostic ultrasound of heart open and other replacement of mitral valve with tissue graft diagnoses: esophageal reflux pure hypercholesterolemia mitral valve disorders congestive heart failure, unspecified unspecified essential hypertension atrial fibrillation other complications due to heart valve prosthesis diaphragmatic hernia without mention of obstruction or gangrene other specified surgical operations and procedures causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation 

Answer: The patient is high likely exposed to