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 66-year-old male patient of dr. , who was referred for outpatient cardiac catheterization after undergoing a positive stress test. he has a history of carotid artery disease, and a stress test in revealed a small mild anterior reversible defect. the patient states he has had chronic stable angina over the past several years with angina occurring once every several days with exertion, which was also responsive to sublingual nitroglycerin. recently, however, he has had two prolonged episodes that occurred at rest and did not easily respond to nitroglycerin. one episode lasted several hours and he subsequently saw his primary care physician and his cardiologist, where he had a stress test done on , which was significant for chest pain, st depression in the v2 and v3 leads, leads 1 and avl. he did have dyspnea on exertion and shortness of breath associated with his angina. he denies any claudication, orthopnea, paroxysmal nocturnal dyspnea, lightheadedness, or lower extremity edema. his coronary artery disease risk factors include hypertension and previous tobacco history. he is nondiabetic. past medical history: significant for spinal stenosis, coronary artery disease, neuropathy of his feet, and severe arm pain and tingling, which is treated with prednisone. he has no history of any transient ischemic attacks, cerebrovascular accidents, or gastrointestinal bleeds. past surgical history: significant for a left carotid endarterectomy in and two prior back surgeries. allergies: no known drug allergies. medications at home: aspirin, toprol 50 mg p.o. once daily, prednisone 5 mg p.o. once daily, hydrochlorothiazide 25 mg p.o. once daily, imdur 30 mg p.o. once daily, m.v.i., darvocet, ritalin p.r.n., amitriptyline 75 mg p.o. q.h.s. hospital course: the patient underwent cardiac catheterization on , which revealed an ejection fraction of approximately 55%, 50% discrete right coronary artery proximal stenosis, 95% mid rca, 80% discrete stenosis of the proximal left anterior descending coronary artery, 70% of the mid left anterior descending coronary artery, 70% diagonal 1 stenosis, 80% midcircumflex, and 70% distal circumflex. the patient was referred to dr. for coronary artery revascularization. the patient underwent coronary artery bypass grafting x 5 on . the patient received a left internal mammary artery graft to the left anterior descending coronary artery, saphenous vein graft to the obtuse marginal #1, and a sequential graft to the obtuse marginal #2, saphenous vein graft to the diagonal #1, and saphenous vein graft to the right posterior descending coronary artery. the patient tolerated the procedure well without any complications, and was transferred to the intensive care unit in stable condition. the patient was kept intubated overnight and was successfully extubated the following day on postoperative day one. he was subsequently transferred to the floor later that day on postoperative day one in stable condition. on postoperative day two he remained afebrile with stable vital signs in a regular rhythm. during the evening of postoperative day two the patient was noted to go into atrial fibrillation. he was treated with lopressor intravenous push. amiodarone drip was started and the patient was noted still to be tachycardic with little response to the amiodarone. a diltiazem drip was also started, as the patient did have v wires in place. the patient's blood pressure remained stable during the entire episode. on the night of postoperative day two the patient was noted to be in some respiratory distress. an electrocardiogram was obtained, which did not show any acute changes. the patient was noted to have coarse breath sounds bilaterally. a chest x-ray was obtained, which revealed fluid overload. thus, 80 mg of intravenous lasix was given with a good response of the patient, both with urine output and symptomatically with increasing oxygen saturation. thus, he was maintained on intravenous lasix during the rest of his hospital course, and subsequently his oxygen saturation and breathing pattern improved dramatically. on postoperative day three the patient was noted to convert to a normal sinus rhythm. his diltiazem drip was discontinued. his amiodarone drip was changed to p.o. dosing. currently the patient is postoperative day four. he is doing extremely well. he remains afebrile with stable vital signs and normal sinus rhythm. his current lopressor dose is now at 100 mg p.o. b.i.d. he is currently maintained on intravenous lasix 20 mg b.i.d. and is diuresing well with decreasing oxygen requirement and improving oxygen saturation. physical therapy was consulted. the patient was noted to require much assistance with ambulation. thus, it is believed that a short rehabilitation stay will be of much benefit to the patient in order to return to his preoperative ambulatory status. as he is currently awaiting rehabilitation placement, the patient will be discharged to rehabilitation. condition on discharge: stable. discharge diagnoses: coronary artery disease status post coronary artery bypass grafting x 5. discharge medications: 1. lopressor 100 mg p.o. b.i.d. 2. lasix 20 mg p.o. t.i.d. x seven days and then once daily. 3. k-dur 20 meq p.o. b.i.d. x 7 days then once daily. 4. aspirin 81 mg p.o. once daily. 5. norvasc 10 mg p.o. once daily. 6. prednisone 5 mg p.o. once daily. 7. dilaudid 2-4 mg p.o. q. 4-6 hours p.r.n. 8. amiodarone 400 mg p.o. t.i.d. x 3 days, then 400 mg p.o. b.i.d. x 7 days, then 400 mg p.o. once daily x 7 days, then 200 mg p.o. once daily. 9. colace 100 mg p.o. b.i.d. 10. albuterol nebulizers q. 4-6 hours p.r.n. discharge instructions: 1. the patient should be ambulating with assistance until able to ambulate at his preoperative status. 2. aggressive chest physical therapy should be given. 3. the patient should be maintained on a cardiac diet. 4. he should follow up with dr. in approximately three weeks. , m.d. dictated by: medquist36 procedure: single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery coronary arteriography using two catheters angiocardiography of left heart structures (aorto)coronary bypass of four or more coronary arteries aortography right heart cardiac catheterization diagnoses: coronary atherosclerosis of native coronary artery intermediate coronary syndrome congestive heart failure, unspecified chronic airway obstruction, not elsewhere classified cardiac complications, not elsewhere classified atrial fibrillation hematoma complicating a procedure aortic valve disorders peripheral vascular disease, unspecified 

Answer: The patient is high likely exposed to