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 an 81 year old male with a past medical history of benign gastrointestinal polyps, status post left hemicolectomy, coronary artery disease, status post coronary artery bypass graft, mitral valve replacement on chronic anticoagulation, who presents with bright red blood per rectum times one day. the patient was in his usual state of health when he developed abdominal cramping with bloody stools one day ago. the patient took imodium with relief. on the evening of admission, the patient developed bloody stools times one. he came to the emergency department, felt dizzy, had a large bright red blood per rectum with syncope, systolic blood pressure in the 90s. his blood pressure improved with hydration. the patient had three large bore intravenouses placed. he was typed and crossed with two units of packed red blood cells and transfused and given one bag of fresh frozen plasma. at that time, he was transferred to the medical intensive care unit. the patient denied any chest pain, shortness of breath, nausea, vomiting, heartburn, acid taste in his mouth, denies feeling dizzy while supine but had increased diaphoresis when upright with cramping abdominal pain and rectal pressure. the patient takes enteric coated aspirin every day, celebrex two times a week, and he denies any ethanol use. physical examination: on physical examination, temperature was 97.6, blood pressure 119/20, heart rate 70, oxygen saturation 99% in room air in general, the patient is an elderly pleasant male, uncomfortable at times. head, eyes, ears, nose and throat examination - no conjunctival injection. the pupils are equal, round, and reactive to light and accommodation. no scleral icterus. mucous membranes are moist. the chest is clear to auscultation bilaterally. no crackles, wheezes or rhonchi. the heart is regular rate and rhythm, positive murmur. the abdomen is soft, tender diffusely, no rebound, positive bowel sounds. extremities no edema. dorsalis pedis pulses are 2+. neurologically, the patient is alert and oriented. laboratory data: the patient had a hematocrit of 37.0 down from 46.9 on . he also had a blood urea nitrogen of 32 from 22 and a creatinine of 1.5, up from 1.2. urinalysis was negative. electrocardiogram showed normal sinus rhythm at 70 beats per minute. no signs of ischemia. hospital course: the patient was admitted to the medical intensive care unit posttransfusion and fresh frozen plasma infusion in the emergency department. he was made npo and given intravenous hydration for hypovolemia. he was also given vitamin k to reverse his anticoagulation. his coumadin and aspirin were both stopped. the patient was seen by internal medicine and gastroenterology. gastroenterology recommended reversal of his anticoagulation as had been done as well as holding his hypertension medications as well as a bleeding scan to localize his gastrointestinal bleeding and angiography if he continued to bleed. the patient was also seen by pulmonary medicine who agreed with the current plan. the bleeding scan was performed which localized bleeding to the area of the cecum and proximal ascending color. the patient was taken to angiography and an attempt to embolize his bleeding vessels was made, although secondary to the tortuousity of these vessels, embolization was unsuccessful. the patient continued to have bleeding showing hematocrit drop from 37.0 to 28.0 and then to 21.0 despite eight units of blood and four units of fresh frozen plasma infusion by . due to his unstable condition, the patient was taken to the operating room the morning of . right colectomy was performed by dr. . the patient received an additional unit of packed red blood cells and an additional unit of fresh frozen plasma coming to a grand total of 11 units of packed red blood cells and seven units of fresh frozen plasma and one unit of platelets given by this time. he tolerated the procedure well without complications. the patient was transferred back to the medical intensive care unit intubated. postoperatively, the patient did well in the medical intensive care unit with no continued bleeding apparent. the patient was given postoperative antibiotics for prophylaxis against infection of his mitral valve. he was quickly extubated once taken to the medical intensive care unit and given pulmonary toilet. he was left npo and on intravenous fluids. the patient was seen by cardiology on , who noted good cardiac function and no damage secondary to his hypovolemia. they also recommended that a heparin drip be started as soon as possible which was also started on that day. there was some difficulty in regulating the heparin drip to achieve the desired partial thromboplastin time although the attempt was eventually successful. on , the patient was restarted on his coumadin. the patient was evaluated on , by physical therapy who continued to work with him. the patient was transferred to the floor on , in stable condition. he indicated that he had started to pass flatus and his diet was advanced on a diabetic diet. he was changed to oral medications. he was, however, complaining of progressive watery bowel movements. for this reason, he was given imodium and metamucil wafers to decrease his stool output. this being successful the patient was left only with the need for appropriate coumadinization which took a considerable amount of time. per cardiology, he was coumadinized to an inr of 2.5 which was finally achieved on . the patient is being discharged today in stable condition and he will follow-up with dr. in approximately one week. his staples were removed from his incision. medications on discharge:: 1. lipitor 20 mg one p.o. once daily. 2. coumadin 3 mg one p.o. q.p.m. 3. moduretic one p.o. once daily. 4. protonix 40 mg one p.o. once daily. 5. captopril 6.25 mg one p.o. twice a day and two p.o. q.h.s. 6. lantus 24 units q.h.s. 7. tylenol #3 one to two p.o. q4hours p.r.n. pain. 8. atenolol 50 mg one p.o. once daily. 9. humalog subcutaneous insulin 3 units q.a.m. and 5 units at lunch and 11 units q.h.s. , m.d. dictated by: medquist36 procedure: arteriography of other intra-abdominal arteries open and other right hemicolectomy diagnoses: anemia, unspecified unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled atrial fibrillation aortocoronary bypass status heart valve replaced by other means hemorrhage of gastrointestinal tract, unspecified 

Answer: The patient is high likely exposed to