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: patient recorded as having no known allergies to drugs attending: chief complaint: back pain major surgical or invasive procedure: - 1. emergent repair of acute type a dissection with a bentall aortic root replacement with a size 23 st. composite valsalva graft. 2. hemiarch replacement with a size 24 hemashield graft. 3. right axillary artery cannulation. history of present illness: 55 year-old gentleman with history of htn, tobacco use, and noncompliance to medications, presented to early this morning with complaints of chest pain and right leg numbness. patient had cta of chest and abdomen/pelvis, which revealed a type a aortic dissection. dissection extended to the r common iliac artery. patient was transferred to for repair of dissection. however, when the patient was being prepped for the or, he started to complain of more severe right leg numbness. pulses in the right leg could not be palpaged. past medical history: hypertension social history: + tobacco use, occ etoh family history: noncontributory physical exam: vs: t 98.8, hr 88, bp 140/72, rr 16, 100% ra (abbreviated exam, as patient was on the or table, about to be prepped during time of examination) gen: nad, a&o x 3 abd: soft, nt, nd vasc: fem dp pt r d 0 0 d l 2+ 1+ 0 1+ patient moves his right foot to command. sensation intact. pertinent results: echo pre cpb no spontaneous echo contrast or thrombus is seen in the body of the left atrium/left atrial appendage or the body of the right atrium/right atrial appendage. a patent foramen ovale is present. a left-to-right shunt across the interatrial septum is seen at rest. there is mild symmetric left ventricular hypertrophy with normal cavity size and global systolic function (lvef>55%). right ventricular chamber size and free wall motion are normal. the ascending aorta is moderately dilated. the descending thoracic aorta is mildly dilated. there are simple atheroma in the descending thoracic aorta. an aortic dissection flap is seen extending from the aortic sinus as far down the descending thoracic aorta as can be scanned. there is flow in the false lumen. the aortic valve is bicuspid. there is no aortic valve stenosis. trace aortic regurgitation is seen. the mitral valve leaflets are mildly thickened. physiologic mitral regurgitation is seen (within normal limits). the tricuspid valve leaflets are mildly thickened. there is no pericardial effusion. brief hospital course: mr. was admitted to the emergently for surgical management of his type a aortic dissection. he was taken to the operating room where he underwent repair of acute type a dissection with a bentall aortic root replacement with a size 23 st. composite valsalva graft and hemiarch replacement. please see operative note for details. vascular surgery was consulted intraoperatively for a cool and painful right lower extremity. the right leg was found to be viable with intact motor-sensaory function and dopplerable posterior tibial pulse. a renal perfusion study was recommended following surgery as the false lumen provided flow to the right kidney. postoperatively he was taken to the intensive care unit for monitoring. his recoverery was somewhat slowed by arf and he was bejun on cvvhd. on pod2 the patient experienced a bradycardic episode that deteriorated into a pea arrest. the resucitation attempts failed despite opening the chest at the bedside, providing internal massage and internal defibrillation. the patient expired and was pronounced by dr . medications on admission: none discharge medications: expired discharge disposition: expired discharge diagnosis: s/p aortic dissection type a repair. post-operative pea arrest-expired discharge condition: expired discharge instructions: none followup instructions: none md procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours venous catheterization, not elsewhere classified extracorporeal circulation auxiliary to open heart surgery hemodialysis other electric countershock of heart other intubation of respiratory tract open and other replacement of aortic valve with tissue graft resection of vessel with replacement, thoracic vessels diagnoses: tobacco use disorder unspecified essential hypertension acute kidney failure, unspecified cardiac arrest congenital insufficiency of aortic valve dissection of aorta, thoracic oliguria and anuria 

Answer: The patient is high likely exposed to