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: the patient is a 76-year-old man with known coronary artery disease status post inferior myocardial infarction in , treated medically after that event, who presented with accelerating anginal symptoms. exercise tolerance test last year showed an old inferior infarct with no evidence of ischemia. he was referred to for cardiac catheterization. his catheterization was done on . please see the catheterization report for full details and summary. the catheterization showed three vessel coronary artery disease, mild mitral regurgitation, moderate aortic stenosis, elevated biventricular filling pressures with an ejection fraction of 20 percent, mild pulmonary hypertension. he was referred to cardiothoracic surgery following catheterization and was accepted for aortic valve replacement and coronary artery bypass graft. the patient was discharged to home and returned to on where he was admitted to the operating room. physical examination: prior to surgery, his neurological exam was intact. heent - no bruits. pupils were equal, round, and reactive to light. oropharynx was clear. lungs were clear. his heart had a regular rate and rhythm. his abdomen was soft, nontender and nondistended with normoactive bowel sounds. his extremities had severe scoliosis with wasting on the right abdominal musculature. laboratory data: hematocrit 44.9, white count 8.9, platelets 150, sodium 139, potassium 4.3, chloride 106, co2 23, bun 19, creatinine 1.0, glucose 293. hospital course: the patient was admitted to the operating room. please see the operative report for full details. in summary, he underwent an aortic valve replacement, coronary artery bypass grafting times three with a 25 mm pericardial aortic valve and a left internal mammary artery to the left anterior descending, saphenous vein graft to the obtuse marginal and saphenous vein graft to the posterior descending artery. he tolerated the operation well and was transferred from the operating room to the cardiothoracic intensive care unit. the patient did well in the immediate postoperative period. following transfer to the cardiothoracic intensive care unit, his anesthesia was reversed. he was weaned from the ventilator and successfully extubated. on postoperative day one, the patient remained hemodynamically stable; however, he did experience episodes of an accelerated tachycardia. electrophysiology was consulted. it was felt that it was an accelerated junctional rhythm, that he would benefit from having his milrinone discontinued and low-dose beta blockers begun. later on postoperative day two, the patient was noted to be in a rapid atrial fibrillation which required loading with amiodarone and increasing doses of lopressor. during that period, the patient was noted to be acutely short of breath, and therefore, he was kept in the intensive care unit for aggressive antiarrhythmic therapy and pulmonary toilet. on postoperative days three and four, the patient continued to experience episodes of rapid atrial fibrillation along with dyspnea. he remained in the intensive care unit over the course of that time. in addition to his amiodarone and lopressor, the patient was started on digoxin, heparin and lasix. on postoperative day five, the patient had converted to a normal sinus rhythm. his pulmonary status had improved, and he was transferred from the cardiothoracic intensive care unit to far six for continuing cardiac rehabilitation and postoperative care. over the next two days, the patient slowly increased his activity level with the assistance of physical therapy and the nursing staff. because of access problems, a picc line was placed. follow-up chest x-ray showed a right pleural effusion which was tapped via thoracentesis for 400 cc of serosanguinous fluid. he continued to be aggressively diuresed, and on postoperative day seven, it was felt that the patient was stable and ready for discharge to a rehabilitation facility for continued postoperative care and post cardiac surgery rehabilitation. at the time of transfer, the patient's condition is good. discharge physical examination: vital signs are temperature 98.4, heart rate 62 sinus rhythm, blood pressure 130/61, respiratory rate 19, oxygen saturation 96 percent on three liters. his weight preoperatively is 87.4 kg, at discharge is 88.4 kg. the patient is alert and oriented times three. he moves all extremities and follows commands. respiratory - clear to auscultation bilaterally, diminished in the bases. his heart has a regular rate and rhythm, s1, s2, no murmur. his sternum is stable. his incision has steri-strips, open to air, clean and dry. his abdomen is soft, nontender and nondistended with normoactive bowel sounds. extremities are warm and well perfused with 1+ pedal edema. discharge laboratory data: sodium 137, potassium 4.3, chloride 100, co2 30, bun 32, creatinine 0.9, glucose 119, white blood cell count 11, hematocrit 25.4, platelets 298, pt 14.4, ptt 38.8, inr 1.5. discharge medications: metoprolol 12.5 mg b.i.d., lasix 40 mg q.d., potassium chloride 20 meq q.d., aspirin 325 mg q.d., digoxin 0.125 mg q.d., amiodarone 400 mg q.d. times seven days, then 200 mg q.d., zantac 150 mg b.i.d., colace 100 mg b.i.d., lipitor 40 mg q.h.s., and coumadin titrated doses to keep inr 2.0-2.5. on and he received 5 mg. additionally, he gets percocet 5/325 one to two tablets q.4 hours p.r.n. follow-up: the patient is to be discharged to a rehabilitation facility. he is to have follow-up with dr. in four weeks and follow-up with dr. .................... in four weeks following his discharge from rehabilitation. discharge diagnosis: 1. coronary artery disease status post coronary artery bypass graft times three with the left internal mammary artery to the left anterior descending, saphenous vein graft to obtuse marginal and saphenous vein graft to posterior descending artery. 2. aortic stenosis status post aortic valve replacement with a #25 pericardial valve. 3. status post inferior myocardial infarction. 4. paroxysmal atrial fibrillation. 5. polio with right-sided weakness. 6. benign prostatic hypertrophy. 7. hypercholesterolemia. 8. migraines. 9. status post mastoid surgery. allergies: the patient has no known drug allergies. , m.d. dictated by: medquist36 procedure: venous catheterization, not elsewhere classified single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery (aorto)coronary bypass of two coronary arteries thoracentesis open and other replacement of aortic valve with tissue graft diagnoses: coronary atherosclerosis of native coronary artery pure hypercholesterolemia unspecified pleural effusion atrial fibrillation aortic valve disorders old myocardial infarction late effects of acute poliomyelitis 

Answer: The patient is high likely exposed to