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 78-year-old man admitted to in for complaints of intermittent chest discomfort with radiation to his left arm and shoulder. although the patient ruled out for a myocardial infarction, a stress test performed during that admission revealed the patient to have significant st segment depression, and a cardiac catheterization was scheduled. the patient underwent cardiac catheterization at on . the procedure revealed the patient to have significant coronary artery disease including left anterior descending artery involvement. the patient was therefore scheduled for coronary artery bypass grafting. the patient was admitted to on for this procedure. past medical history: 1. gastroesophageal reflux disease. 2. osteoarthritis of the hands. 3. benign prostatic hypertrophy, status post transurethral resection of the prostate. 4. cataracts. 5. hyperlipidemia. 6. hiatal hernia. past surgical history: 1. status post right colectomy. 2. status post transurethral resection of the prostate. 3. status post right cataract surgery. allergies: the patient has no known drug allergies. medications: 1. aspirin 81 mg p.o. q day. 2. metoprolol 12.5 mg p.o. b.i.d. social history: the patient is married and is a retired chemist. hospital course: the patient was admitted to on and taken to the operating room for coronary artery bypass grafting. the surgery proceeded without complications, and the patient was thereafter transferred to the csru for monitoring. the patient's stay in the csru was uneventful. the patient was transferred to the cardiothoracic surgery floor on postoperative day number two. by postoperative day number three, the patient was ambulating well on the floor. his pain was well-controlled. by postoperative day number four, the patient was deemed stable enough for discharge. discharge condition: stable. discharge medications: 1. metoprolol 25 mg p.o. b.i.d. 2. lasix 20 mg p.o. b.i.d. 3. potassium chloride 20 meq p.o. b.i.d. 4. colace 100 mg p.o. b.i.d. 5. percocet. 6. enteric coated aspirin 325 mg p.o. q day. fop: 1. the patient is to follow up with dr. four weeks following discharge. 2. the patient is to follow up with his primary care physician two to four weeks following discharge. 3. the patient is to follow up with his cardiologist following discharge. discharge diagnosis: coronary artery disease. , 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 diagnoses: coronary atherosclerosis of native coronary artery esophageal reflux intermediate coronary syndrome pure hypercholesterolemia diaphragmatic hernia without mention of obstruction or gangrene 

Answer: The patient is high likely exposed to