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: ms. is a 66-year-old retired ob nurse who was diagnosed with a new heart murmur in . she was found to have severe mitral regurgitation, and had a mitral valve repair in . she describes the surgery as being very difficult, requiring a repeat operation the same admission. postoperatively, she developed atrial fibrillation and was managed with amiodarone for about a year. she has since been off of that as of , and is in normal sinus rhythm. she has been plagued by episodes of congestive heart failure since her surgery, the first of which was in , which required admission to her local hospital. she was diuresed and kept on lasix for some time, but eventually tapered off. again in , she felt like she was getting more short of breath. her lasix was restarted, with some improvement of her symptoms. she currently finds that she gets dyspnea with walking up an incline or with any type of exertion. at times she will notice it when she is talking. echocardiograms performed recently had revealed mitral stenosis, and she is now referred for a mitral valve replacement. she denies having any anginal symptoms, but does report occasional heaviness in her chest when she is short of breath. she denies any claudication, orthopnea, edema, paroxysmal nocturnal dyspnea or lightheadedness. past medical history: 1. mitral valve disease (no history of scarlet or rheumatic fever) 2. hiatal hernia/gastroesophageal reflux disease 3. prior atrial fibrillation 4. congestive heart failure 5. hypertension 6. hyperlipidemia past surgical history: 1. status post mitral valve repair in 2. status post hysterectomy 3. status post cholecystectomy 4. status post eye surgery as a child allergies: she is not allergic to any medicines. medications: 1. aspirin 325 mg once daily 2. premarin 0.3 mg once daily 3. lopressor 50 mg twice a day 4. lasix 20 mg once daily 5. potassium chloride 20 meq once daily 6. diovan 80 mg once daily 7. zocor 20 mg once daily 8. multivitamin once daily 9. calcium physical examination: her heart rate is 68, her blood pressure is 100/60, her preoperative weight is 53.5 kg. head, eyes, ears, nose and throat are normal. her neck is without bruit. the chest is clear to auscultation bilaterally. the heart has a respiratory rate, with a diastolic murmur. the abdomen is soft, nontender, nondistended. the extremities have normal pulses with no varicosities. cardiac catheterization: ejection fraction 68%, left ventricular end diastolic pressure 14, pulmonary capillary wedge pressure 33, pulmonary artery pressure 63/26, mitral valve area 0.65, mitral valve gradient 19 mm. there are normal coronaries. hospital course: the patient was admitted as an outpatient on , for her cardiac catheterization. she was kept overnight, and the following day she was taken to the operating room, where she had a minimally-invasive mitral valve replacement. her valve is a #25 mosaic. postoperatively, the patient was taken intubated to the intensive care unit. she did require some support with milrinone overnight, and also received two units of hespan. she spent her first postoperative day in the intensive care unit and was extubated in the middle of postoperative day number one. the following day, she remained in the intensive care unit, and required a bit of a nitroglycerin drip. her chest tubes were discontinued in a normal fashion, and later that day she was transferred to the floor. on the evening of her second postoperative day, she had an episode of rapid atrial fibrillation with a pulse rate of 180 beats per minute. during this time, she did maintain an adequate blood pressure between 90 and 110 systolic. she required a total of 10 mg of intravenous lopressor in order to convert back to a sinus rhythm. a couple of hours later, she had another episode of rapid heart rate and required another 20 mg of intravenous lopressor. the decision was made to load her with intravenous amiodarone and replete her electrolytes. she was then converted to oral amiodarone, which she will likely need to be on for some time. the patient was kept in sinus rhythm by increasing her oral lopressor. by the fourth postoperative day, the patient was ambulating in the hallway. she continued to be diuresed, and her pacing wires were discontinued. by the fifth postoperative day, we believed that the patient was ready for rehabilitation, and appropriate arrangements were made for her transfer. on the day prior to her discharge, her weight was 59.2 kg, which is still 6 kg up from her preoperative weight. this discharge summary was dictated on , in anticipation of a potential transfer to rehabilitation tomorrow. the patient is discharged on the following medications: 1. premarin 0.3 mg by mouth once daily 2. zocor 20 mg once daily 3. captopril 12.5 mg three times a day 4. enteric-coated aspirin 325 mg once daily 5. colace 100 mg twice a day 6. lasix 20 mg twice a day for seven days, then 20 mg once daily 7. potassium chloride 20 meq twice a day for seven days, then 20 meq once daily 8. amiodarone 400 mg once daily 9. lopressor 50 mg twice a day 10. multivitamin once daily 11. percocet 5/325 one to two by mouth every four to six hours as needed 12. tylenol 650 mg every four to six hours as needed 13. ibuprofen 400 mg by mouth every four to six hours as needed 14. zantac 150 mg twice a day the patient is to follow up with her primary care physician, . , in two weeks. in addition, she is to follow up with dr. in approximately four weeks. discharge diagnosis: 1. mitral valve stenosis, now status post minimally-invasive mitral valve replacement 2. rapid atrial fibrillation, controlled 3. hypertension, controlled 4. hypercholesterolemia 5. congestive heart failure , 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