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: allergies: penicillins / codeine / sulfamethoxazole/trimethoprim attending: chief complaint: dyspnea on exertion major surgical or invasive procedure: redo-sternotomy x 3, replacement of ascending aorta and aortic arch reimplantation of the arch vessels, repair of the main pulmonary and right and left pulmonary arteries with bovine pericardial patch and replacement of the mitral valve with a size 25 mosaic tissue valve history of present illness: 72 y/o female with extensive past medical history (see below) who has been c/o progressively worsening dyspnea on exertion over the past six months. most recent cardiac cath and echo revealed severe mr along with moderate ai. past medical history: mitral regurgitation and aortic insufficiency aortic dissection s/p aortic root replacement coronary artery disease s/p coronary artery bypass graft x 2 , s/p stents to left main and poba of om1 complete heart block s/p ppm hypertension hyperlipidemia s/p appendectomy s/p tonsillectomy social history: retired. quit smoking . denies etoh. family history: mother with hypertension. father died from brain tumor/cancer. physical exam: vs: 62 130/69 5'3" 136# gen: wdwn elderly female in nad heent: eomi, perrl, ncat, op benign neck: supple, from, -jvd, -bruit chest: ctab -w/r/r, well-healed msi heart: rrr 3/6 sem abd: soft, nt/nd, +bs ext: warm, well-perfused -edema, well-healed right evh incision neuro: a&o x 3, mae, non-focal pertinent results: echo: pre-bypass: 1. the left atrium is moderately dilated. no atrial septal defect is seen by 2d or color doppler. 2. due to suboptimal technical quality, a focal wall motion abnormality cannot be fully excluded. overall left ventricular systolic function is low normal (lvef 50-55%). 3. right ventricular chamber size and free wall motion are normal. 4. an ascending aortic graft is noted consistent with previous replacement surgery. the descending thoracic aorta is mildly dilated. there are simple atheroma in the descending thoracic aorta. 5. there are three aortic valve leaflets. there is no aortic valve stenosis. moderate(2+) aortic regurgitation is seen. 6. the mitral valve leaflets are moderately thickened. there is mild valvular mitral stenosis (area 1.5-2.0cm2). moderate (2+) mitral regurgitation is seen. post-bypass: for the post-bypass study, the patient was receiving vasoactive infusions including epinephrine and phenylephrine. 1. a well-seated bioprosthetic valve is seen in the mitral position with normal leaflet motion and gradients. no mitral regurgitation is seen. 2. an ascending aortic and arch graft is also seen. 3. biventricular function is unchanged, ai is unchanged. 4. other findings are unchanged head ct: there is diffuse cerebral edema identified with compression of the ventricles. there is obliteration of the basal cisterns identified with deformity of the brain stem indicating central herniation. at the foramen magnum, downward displacement of the cerebellar tonsils indicates tonsillar herniation. there are multiple infarcts identified bilaterally involving the posterior cerebral and anterior cerebral arteries as well as the right superior cerebellar artery as well as the watershed distribution. there is no hemorrhage identified. 03:24pm blood wbc-13.2*# rbc-3.02*# hgb-9.6*# hct-27.5*# mcv-91 mch-31.7 mchc-34.7 rdw-14.3 plt ct-101* 02:53am blood wbc-12.1* rbc-3.34* hgb-10.5* hct-31.3* mcv-94 mch-31.4 mchc-33.5 rdw-14.9 plt ct-76* 03:24pm blood pt-18.2* ptt-69.9* inr(pt)-1.7* 02:37am blood pt-13.3* ptt-35.1* inr(pt)-1.2* 04:58pm blood urean-11 creat-0.6 cl-114* hco3-24 02:53am blood glucose-145* urean-12 creat-0.5 na-141 k-3.8 cl-106 hco3-26 angap-13 02:53am blood calcium-8.6 phos-3.4 mg-1.8 brief hospital course: mrs. was admitted and taken directly to the operating room with plans for a redo-sternotomy, along with aortic and mitral valve replacements. unfortunately due to a very fragile and heavily calcified aorta along with adherent scar tissue, aortic valve replacement could not be performed. mitral valve replacement was performed along with an unplanned replacement of her ascending aorta and total arch with reimplantation of the head vessels which required circulatory arrest for 24 minutes. for additional surgical details, please see seperate dictated operative note. following the operation, she was brought to the cvicu in critical condition. due to the heavily calcified aorta and unplanned circulatory arrest, there was much concern for neurologic injury. over 48 hours, she remained unreponsive. a head ct scan on postoperative day two showed diffuse cerebral edema with deformity of the brain stem indicating central herniation. there was also downward displacement of the cerebellar tonsils indicating tonsillar herniation. the ct scan also showed multiple infarcts involving the posterior cerebral and anterior cerebral arteries as well as the right superior cerebellar artery as well as the watershed distribution. no hemorrhage was identified. the neurology service was consulted and brain death examination was performed on . after declaration of brain death, a family meeting was held, and the patient was withdrawn from ventilatory support. she expired soon after. the medical examiner was notified, and post mortem was refused. medications on admission: lisinopril 20mg qd, lopressor 50mg , lasix 20mg qd, crestor 10mg qd, norvasc 5mg qd, aspirin 81mg qd discharge medications: none discharge disposition: expired discharge diagnosis: mitral regurgitation and aortic insufficiency aortic dissection s/p aortic root replacement coronary artery disease s/p coronary artery bypass graft x 2 , s/p stents to left main and poba of om1 complete heart block s/p ppm hypertension hyperlipidemia s/p appendectomy s/p tonsillectomy discharge condition: expired discharge instructions: none followup instructions: none procedure: extracorporeal circulation auxiliary to open heart surgery resection of vessel with replacement, thoracic vessels open and other replacement of mitral valve with tissue graft other repair of vessel repair of blood vessel with tissue patch graft diagnoses: coronary atherosclerosis of native coronary artery unspecified essential hypertension atherosclerosis of aorta aortocoronary bypass status mitral valve insufficiency and aortic valve insufficiency compression of brain other and unspecified hyperlipidemia anoxic brain damage surgical operation with anastomosis, bypass, or graft, with natural or artificial tissues used as implant causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation cardiac pacemaker in situ cerebral artery occlusion, unspecified with cerebral infarction dissection of aorta, thoracic iatrogenic cerebrovascular infarction or hemorrhage 

Answer: The patient is high likely exposed to