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 53-year-old gentleman who went to see his primary care physician for his yearly physical. at that time, he reported a 1-year history of burning substernal chest pain with exertion. he underwent an exercise treadmill test which was positive and subsequently underwent cardiac catheterization which showed an ejection fraction of 55%, 90% left main coronary artery, 90% proximal left anterior descending artery, 60% to 80% left circumflex, and a proximally occluded right coronary artery. the patient was referred to dr. for urgent coronary artery bypass grafting. past medical history: 1. hypertension. 2. hypercholesterolemia 3. gastroesophageal reflux disease. allergies: no known drug allergies. medications on admission: 1. hydrochlorothiazide 25 mg by mouth once per day. 2. lipitor 40 mg by mouth once per day. 3. zantac 150 mg by mouth twice per day. social history: the patient lives at home with his wife and his two children. he works in construction. positive tobacco with half a pack per day for 40 years. brief summary of hospital course: the patient was admitted to and taken to the operating room on with dr. for a coronary artery bypass graft times three. left internal mammary artery to left anterior descending artery, saphenous vein graft to obtuse marginal, and saphenous vein graft to posterior descending artery. the patient had an intra-aortic balloon pump placed in the cardiac catheterization laboratory due to his difficult anatomy and that remained during his surgery. the patient was transferred to the intensive care unit in stable condition on a neo-synephrine infusion. postoperatively, the patient requried a moderate amount of volume resuscitation. due to his elevated filling pressures and some minor postoperative electrocardiogram changes, a transesophageal echocardiogram was performed at the bedside which showed a normal ejection fraction with no wall motion abnormalities. the patient's hemodynamics improved over the next couple of hours. on postoperative day one, the patient was weaned and extubated from mechanical ventilation. the intra-aortic balloon pump was removed without difficulty. the neo-synephrine was weaned to off. on postoperative day two, the patient was started on lopressor which he tolerated well. on postoperative day three, the patient's chest tubes were removed without difficulty as well as his pacing wires. on postoperative day four, the patient's hematocrit was noted to be down to 21. the patient was not symptomatic and had stable vital signs. it was discussed with dr. , and a transfusion was deferred. on postoperative day five, the patient continued to ambulate with physical therapy. on postoperative day six, the patient's hematocrit was noted to be down to 20.8. the decision was made to transfuse the patient; however, the patient refused a blood transfusion. the risks of refusing a transfusion were discussed with him. as the patient remained hemodynamically stable, with no evidence of orthostasis, a stable blood pressure, and stable oxygen saturation, the blood transfusion was deferred. the patient had been started on iron and vitamin c. on postoperative day seven, the patient worked with physical therapy and was able to walk 500 feet and climb one flight of stairs. the patient's hematocrit had risen to 21.1, and it was felt the patient was appropriate for discharge to home. condition at discharge: temperature maximum was 99.2, pulse was 82 (in sinus rhythm), blood pressure was 119/66, respiratory rate was 16, and oxygen saturation 96% on room air. laboratory data red white blood cell count was 9.2, hematocrit was 21.1, and platelet count was 330. potassium was 4, blood urea nitrogen was 27, and creatinine was 1. neurologically, the patient was awake, alert, and oriented times three. heart regular in rate and rhythm without murmurs. breath sounds were clear bilaterally. the abdomen was soft, nontender, and nondistended. positive bowel sounds. tolerating a regular diet. the sternal incision was clean, dry, and intact. the sternum was stable. lower extremities revealed 1 to 2+ pitting edema. vein harvest site was clean, dry, and intact. there was no erythema or drainage. discharge diagnoses: 1. coronary artery disease. 2. status post coronary artery bypass graft. 3. postoperative anemia. medications on admission: 1. lopressor 75 mg by mouth twice per day. 2. lasix 20 mg by mouth twice per day (times seven days). 3. potassium chloride 10 meq by mouth twice per day (times seven days). 4. colace 100 mg by mouth twice per day. 5. zantac 150 mg by mouth twice per day. 6. enteric-coated aspirin 325 mg by mouth every day. 7. lipitor 40 mg by mouth once per day. 8. niferex 150 mg by mouth once per day. 9. vitamin c 500 mg by mouth twice per day. 10. ibuprofen 600 mg by mouth q.6h. as needed. 11. dilaudid 2 mg to 6 mg by mouth q.6h. as needed. 12. multivitamin one tablet by mouth once per day. discharge status: the patient to be discharged to home. condition at discharge: stable. discharge instructions/followup: 1. the patient was to follow up with dr. in one to two weeks. 2. the patient was to follow up with dr. in three to four 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 (aorto)coronary bypass of two coronary arteries angiocardiography of left heart structures left heart cardiac catheterization diagnostic ultrasound of heart implant of pulsation balloon removal of external heart assist system(s) or device(s) diagnoses: coronary atherosclerosis of native coronary artery esophageal reflux intermediate coronary syndrome pure hypercholesterolemia tobacco use disorder unspecified essential hypertension acute posthemorrhagic anemia obesity, unspecified heart disease, unspecified 

Answer: The patient is high likely exposed to