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: mr. is a 46 year old man who presented to the emergency room with chest pain times two days radiating to his left shoulder. on the day of admission he also complained of shortness of breath and dry heaves. he took three aspirin prior to arrival in the emergency room. he denies fevers, chills, cough, blood or edema of the extremities. the patient's past medical history was significant for hypertension and hypercholesterolemia. physical examination: on physical examination in the emergency room temperature was 98.4, heartrate 85, blood pressure 104/60, respiratory rate 18, oxygen saturation 100%. general, in no acute distress. neurological, alert and oriented times three. head, eyes, ears, nose and throat, pupils equal, round and reactive to light, extraocular movements intact. neck is supple with no jugulovenous distension. respiratory clear to auscultation bilaterally. cardiac, regular rate and rhythm, s1 and s2. abdomen soft, obese, nontender. rectal, no masses, positive hemorrhoids. extremities, no cyanosis, clubbing or edema. skin was warm and dry. laboratory data: electrocardiogram with st elevations in leads 3, st depressions in lead v2 through v6, also in lead 1 and l. chest x-ray shows no infiltrates but a widened mediastinum. hospital course: in the emergency room the patient's pulmonary status decompensated and he had flash pulmonary edema. he was intubated emergently. cardiology was consulted and he was brought to the catheterization laboratory. cardiac catheterization showed type a aortic dissection and cardiothoracic surgery was consulted. the patient was seen in the catheterization laboratory and was brought emergently to the operating room where he underwent repair of a type a aortic dissection with replacement of the ascending aorta with #26 shawl weave graft, and resuspension of the aortic valve. please see the operative report for full details. the patient tolerated the procedure well and was transferred from the operating room to the cardiothoracic intensive care unit. the patient did well in the immediate postoperative period. he was weaned from all vasoactive intravenous infusions. his sedation was discontinued. he was weaned from the ventilator and successfully extubated. during the course of postoperative day #1, the patient had a temperature spike to 101.6. for that he was pancultured, also on postoperative day #2, the patient's chest tubes were removed and he was transferred to the floor for continuing postoperative care and cardiac rehabilitation. , m.d. dictated by: medquist36 procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours extracorporeal circulation auxiliary to open heart surgery injection or infusion of platelet inhibitor coronary arteriography using a single catheter insertion of endotracheal tube resection of vessel with replacement, thoracic vessels angiocardiography of right heart structures suture of artery right heart cardiac catheterization open heart valvuloplasty of aortic valve without replacement diagnoses: pure hypercholesterolemia congestive heart failure, unspecified unspecified essential hypertension aortic valve disorders acute respiratory failure cardiogenic shock acute myocardial infarction of unspecified site, initial episode of care dissection of aorta, thoracic 

Answer: The patient is high likely exposed to