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 55-year-old male with no previous cardiac history, referred for outpatient cardiac catheterization to evaluate positive stress test following exertional angina symptoms. past medical history: etoh use, drinks per day, no past surgical history, no known allergies. hospital course: on the patient was taken to the cardiac catheterization lab following elective admission where he was found to have a proximal right coronary artery stenosis approximately 90% and a mid rca stenosis of about 95%. the patient had a discrete left main stenotic lesion approximately 80% and a proximal lad lesion approximately 80%. a diag 2 lesion identified 70% discrete stenosis, a proximal circ and mid circumflex lesions both 60-70% stenosis. the patient had an ejection fraction of 60%. based on these findings, cardiothoracic surgery consult was obtained and patient was deemed appropriate candidate for coronary artery bypass grafting. so on the patient was taken to the operating room where he underwent a coronary artery bypass graft times four. his grafts showed lima to diag, saphenous vein to distal lad, saphenous vein to om, saphenous vein to the acute marginal branch. postoperatively he was transferred to the cardiac surgery recovery unit, maintained on pressors briefly. the patient was awakened and extubated. pressors were slowly weaned off. he was transferred to the floor where he began tolerating a regular diet, ambulating with pt, chest tubes and cardiac pacing wires were removed. however, the patient developed onset of atrial fibrillation with controlled rate and was started on amiodarone. the patient was seen by physical therapy, deemed independent for discharge directly home. condition on discharge: stable. discharge status: to home. discharge medications: acetylsalicylic acid 325 mg po q day, metoprolol 25 mg po bid, lasix 20 mg po bid times 7 days, kcl 20 meq po bid for 7 days, colace 100 mg po bid, zantac 150 mg po bid, amiodarone 400 mg po q d and percocet 5/325 po q 4-6 hours prn pain. patient is to follow-up with dr. in weeks and his primary care physician weeks. , m.d. dictated by: medquist36 procedure: (aorto)coronary bypass of three coronary arteries single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery coronary arteriography using two catheters angiocardiography of left heart structures left heart cardiac catheterization reopening of recent thoracotomy site diagnoses: coronary atherosclerosis of native coronary artery tobacco use disorder unspecified essential hypertension cardiac complications, not elsewhere classified atrial fibrillation atrial flutter hemorrhage complicating a procedure other and unspecified angina pectoris personal history of alcoholism 

Answer: The patient is high likely exposed to