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 47 year old man who complained of a one year history of heart murmur found incidentally by his primary care provider after he went to see him for a shoulder injury. he was referred to dr a cardiologist who did a transesophageal echocardiogram which revealed severe mitral regurgitation. he was then referred to dr. at who repeated the transesophageal echocardiogram and then proceeded to cardiac catheterization in . repeat transesophageal echocardiogram showed severe mitral regurgitation with mild pulmonary hypertension, normal left ventricular function, pa systolic blood pressure of 42 and 4+ mitral regurgitation with mildly thickened mitral valve leaflets and a partially failed mitral valve leaflet. cardiac catheterization showed a moderately dilated left atrium, moderately dilated left ventricle. overall left ventricular systolic function was normal. ejection fraction 55-60% with 4+ mitral regurgitation and no evidence of coronary artery disease. past medical history: significant for hypertension, treated for the past year, mitral regurgitation and a left shoulder fracture repaired with pins in . medications prior to admission: hydrochlorothiazide and univasc. allergies: no known drug allergies. social history: occupation is a supervisor at pve industries. he lives at home with his wife and two children. no tobacco use, no alcohol use and no other drug use. physical examination: physical examination prior to admission was temperature 97.8, blood pressure 157/90, heartrate 64. height is 64 1 inch, weight is 230 lbs. in general, this is a middle aged man in no acute distress. skin, no rashes or lesions. head, eyes, ears, nose and throat reveals pupils are equal, round, and reactive to light. extraocular movements intact, nonicteric. mucous membranes are moist. neck is supple with no lymphadenopathy and no jugulovenous distension. chest is clear to auscultation bilaterally. heart is regular rate and rhythm with grade iii/vi systolic murmur heard best over the left sternal border. abdomen is soft, obese, nontender, nondistended with positive bowel sounds, no bruit or palpable masses. extremities are warm and dry with no cyanosis, clubbing or edema. varicosities, minimal in the right lower extremity, none on the left lower extremity. neurological was intact. cranial nerves ii through xii intact. palpable femoral, dorsalis pedis, posterior tibial and radial pulses. laboratory data: electrocardiogram is sinus rhythm at changes and normal axis checks. white count 7, hematocrit 40.9, sodium 144, potassium 4.4, chloride 108, carbon dioxide 26, bun 15, creatinine 1.0, glucose 203. chest x-ray with no active pulmonary disease and no pneumothorax. hospital course: as stated previously the patient was a direct admission to the operating room where he underwent a quadrangular resection and mitral valve ring annuloplasty. please see the operation report for full details. he tolerated the operation well and was transferred from the operating room to the cardiothoracic intensive care unit. at the time of transfer his blood pressure was 110/55 with pa pressure of 29/60 and heartrate in the 80s. he was transferred with only propofol infusion. he did well in the immediate postoperative period, however, he remained intubated over night on the day of his surgery. on the morning of postoperative day #1 he was weaned from the ventilator and extubated and in the late afternoon of postoperative day #1 he was transferred to the floor for continuing postoperative care and cardiac rehabilitation. on postoperative day #2 the patient did experience an episode of rapid atrial fibrillation with a ventricular response in the 160s. he was treated with intravenous lopressor and diltiazem and begun on amiodarone p.o. after achieving good rate control, his diltiazem was discontinued and he was changed to oral lopressor. over the next several days the patient remained hemodynamically stable. his activity level was increased with the assistance of physical therapy and the nursing staff. on postoperative day #4 he was felt to be ready and stable to be discharged home on postoperative day #5. at the time of discharge the patient's vital signs were temperature 98.4, heartrate 74, sinus rhythm, blood pressure 125/70, respiratory rate 18, oxygen saturation 94%. weight preoperatively was 105 kg and at discharge is 113.2 kg. laboratory on the day prior to discharge revealed white count 9.8, hematocrit 22.8, platelets 140, sodium 141, potassium 4.6, chloride 105, carbon dioxide 30, bun 18, creatinine 0.8, glucose 121. on physical examination he was alert and oriented times three. he moves all extremities, conversant. respiratory, clear to auscultation bilaterally. heartsounds, regular rate and rhythm, s1 and s2, no murmur. right thoracotomy site with steri-strips, open to air, clean and dry with a large ecchymotic area just below the incision. abdomen is soft, nontender, nondistended with normoactive bowel sounds. extremities are warm and well perfused, no cyanosis, clubbing or edema. discharge medications: 1. metoprolol 12.5 mg b.i.d. 2. lasix 20 mg q.d. times 14 days 3. potassium chloride 20 meq q.d. times 14 days 4. enteric coated aspirin 325 mg q.d. 5. univasc 30 mg q.d. 6. amiodarone 400 mg t.i.d. through , then 400 mg b.i.d. from through and then 400 mg q.d. thereafter 7. ibuprofen 400 mg q. 6 hours prn 8. percocet 5/325 one to two tablets q. 4 hours prn fop: the patient is to have follow up in the wound clinic in two weeks, follow up with dr. in one month and follow up with his primary care provider also in one month. , m.d. dictated by: medquist36 procedure: extracorporeal circulation auxiliary to open heart surgery diagnostic ultrasound of heart other esophagoscopy annuloplasty open heart valvuloplasty of mitral valve without replacement diagnoses: mitral valve disorders unspecified essential hypertension cardiac complications, not elsewhere classified atrial fibrillation other chronic pulmonary heart diseases 

Answer: The patient is high likely exposed to