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 57 year-old man with no medical care in many years several months of exertional chest pain, no hest pain at rest. the patient was recently ruled out for an myocardial infarction and had a positive exercise tolerance test. an echocardiogram showed multiple areas of hypokinesis. electrocardiogram showed left anterior vesicular block with questionable ischemia laterally. a catheterization done on showed an ef of 60% and three vessel disease. past medical history: 1. pancreatitis. 2. etoh, marijuana and cocaine abuse. 3. gastroesophageal reflux disease. 4. urinary retention. 5. benign prostatic hypertrophy. 6. obesity. past surgical history: questionable pancrease surgery and other abdominal surgeries for fluid drainage as well as testicular surgery. social history: the patient uses one to two bags of heroine several times per week, nasally. states no intravenous drug use. no alcohol use in 20 years. no cocaine or marijuana use at this time. physical examination at the time of preadmission testing: heart rate 77. blood pressure 160/74. respiratory rate 18. o2 sat 98% on room air. cardiac regular rate and rhythm. s1 and s2. no murmur. lungs clear to auscultation bilaterally with faint expiratory wheezes. abdomen is soft and guarded with tenderness in the right upper quadrant and the right lower quadrant. also costovertebral angle tenderness. no hepatosplenomegaly. active bowel sounds. extremities are warm and well perfuse with no clubbing, cyanosis or edema. neck is supple with no jvd or bruits. pulses carotids are 1+ bilaterally, radial 2+ bilaterally, femoral 2+ bilaterally, dorsalis pedis pulses and posterior tibial pulses are both 2+ bilaterally. neurological extraocular movements intact. grossly nonfocal examination. excellent strength in all extremities. review of systems: no claudication. no melena. no bleeding disorders. no cvas or tias. allergies: penicillin. medications preoperatively: 1. protonix. 2. atenolol. 3. aspirin. 4. doxazosin. 5. flomax. no known doses. laboratory data at the time of preadmission testing: white blood cell count 5.2, hematocrit 35.9, platelets 315, sodium 137, potassium 4.0, chloride 104, co2 28, bun 14, creatinine 0.6, glucose 88, alt 23, alkaline phosphatase 95, total bilirubin 0.4, albumin 3.9, inr 1.1. hospital course: as stated previously the patient is a direct admission for to the operating room. on he underwent at that time coronary artery bypass grafting times four. please see the operating room report for full details. in summary he had a coronary artery bypass graft times four with a left internal mammary coronary artery to the left anterior descending coronary artery, saphenous vein graft to the posterior descending coronary artery, saphenous vein graft to the diagonal and saphenous vein graft to the obtuse marginal. his bypass time was 117 minutes with a cross clamp time of 98 minutes. he tolerated the operation well and was transferred from the operating room to the cardiothoracic intensive care unit. at the time of transfer the patient's mean arterial pressure was 83 with a cvp of 13. he was a paced at 80 beats per minute and he had neo-synephrine at 0.5 micrograms per kilogram per minute. the patient did well in the immediate postoperative period. his anesthesia was reversed. he was successfully weaned from the ventilator and extubated. on postoperative day one the patient remained hemodynamically stable. he was weaned off all vaso active intravenous medications. he was started on oral beta blockers as well as diuretics. at that time he was seen by the acute pain service and he was transferred from the intensive care unit to the far 2 for continuing postoperative care and cardiac rehabilitation. on postoperative day two the patient remained hemodynamically stable. his chest tubes and temporary pacing wires were discontinued. with the assistance of the nursing staff and the physical therapy staff his activity level was gradually increased over the next several days. he had an uneventful postoperative course and on postoperative day five it was decided that the patient was stable and ready to be discharged to home. at the time of this dictation the patient's physical examination is vital signs temperature 98.6, heart rate 78 sinus rhythm, blood pressure 101/55, respiratory rate 18, o2 sat 96% on room air. weight preoperatively 77.2 kilograms at discharge 82 kilograms. laboratory data white blood cell count 11.5, hematocrit 28.2, platelets 247, sodium 142, potassium 3.9, chloride 107, co2 30, bun 17, creatinine 0.7, glucose 122. examination alert and oriented times three, moves all extremities, follows commands, respirations clear to auscultation bilaterally. cardiac regular rate and rhythm. s1 and s2. no murmur. sternum is stable. incision with steri-strips. open to air clean and dry. abdomen is soft, nontender, nondistended with normoactive bowel sounds. extremities are warm and well perfuse with no edema. right saphenous vein graft site with steri-strips open to air clean and dry. discharge medications: 1. metoprolol 25 mg b.i.d. 2. pantoprazole 40 mg q.d. 3. enteric coated aspirin 325 mg q.d. 4. flomax 0.4 q.h.s. 5. lasix 20 mg q.d. times seven days. 6. potassium chloride 20 milliequivalents q.d. times seven days. 7. dilaudid 2 to 8 mg q 4 to 6 hours prn as needed for pain. discharge diagnoses: 1. coronary artery disease status post coronary artery bypass grafting times four with a left internal mammary coronary artery to the left anterior descending coronary artery, saphenous vein graft to the obtuse marginal, saphenous vein graft to posterior descending coronary artery and saphenous vein graft to diagonal. 2. history of pancreatis. 3. history of alcohol, marijuana, and heroine abuse. 4. gastroesophageal reflux disease. 5. urinary retention and benign prostatic hypertrophy. 6. abdominal surgery. 7. testicular surgery. condition on discharge: good. discharge status: he is discharged to home. follow up: he is to have follow up in the clinic in two weeks. he is to have follow up with his primary care physician in two to three weeks and follow up with dr. in four 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 monitoring of cardiac output by other technique diagnoses: coronary atherosclerosis of native coronary artery esophageal reflux opioid type dependence, continuous obesity, unspecified chronic pancreatitis 

Answer: The patient is high likely exposed to