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: this is a 41-year-old gentleman who is completely asymptomatic with a known history of a heart murmur at the age of 18 with echocardiogram and known mitral regurgitation. on his next evaluation, echo after diagnosis showed aortic insufficiency and mild mr. was referred for serial echo's which he has had done over the past several years. he has a known bicuspid aortic valve with a dilated aorta. his exercise tolerance test was negative. he underwent cardiac catheterization on which an ejection fraction of 59%, normal coronaries, moderate ai, and mild mitral regurgitation, and dilated ascending aorta. mri performed in showed moderate mr and an ascending aorta of 4.7 cm, with a normal lv ejection fraction. past medical history: 1. l5-s1 sciatica. 2. mild lactose intolerance. 3. remote bilateral arm fractures and left fibular fracture. past surgical history: includes right inguinal herniorrhaphy and varicocelectomy. medications on admission: claritin 10 mg p.o. daily and p.r.n. antibiotics for dental work. allergies: he had no known allergies. preoperative laboratory data: white count of 5.9, hematocrit of 44.2, pt of 13.4, ptt of 25.4, inr of 1.1, platelet count of 213,000. urinalysis was negative. glucose of 81, bun of 19, creatinine of 0.9, sodium of 143, k of 3.8, chloride of 103, bicarbonate of 32, anion gap of 12. alt of 20, ast of 18, alkaline phosphatase of 43, total bilirubin of 0.7, total protein of 7.8, albumin of 4.9, globulin of 2.9, hba1c of 5.5%. discharge status: the patient was discharged to home in stable condition with vna services with the following instructions. discharge instructions: 1. to follow up with dr. , the primary care physician, 1 to 2 weeks. 2. to follow up with dr. , his cardiologist, in 1 to 2 weeks post discharge. 3. to follow up with dr. in the office for his postoperative surgical visit in 3 to 4 weeks post discharge. medications on discharge: 1. lasix 20 mg p.o. daily (for 5 days). 2. potassium chloride 20 meq p.o. daily (for 5 days). 3. colace 100 mg p.o. twice a day. 4. enteric coated aspirin 81 mg p.o. daily. 5. percocet 5/325 1 to 2 tablets p.o. q.4h. p.r.n. (for pain). 6. ferrous gluconate 300 mg p.o. daily. 7. vitamin c 500 mg p.o. twice a day. 8. metoprolol 50 mg p.o. twice a day. 9. a single multivitamin p.o. daily. discharge diagnoses: 1. status post aortic valve replacement and ascending aortic repair. 2. l5-s1 sciatica. 3. mild lactose intolerance. 4. remote bilateral arm fractures and left fibular fracture. condition on discharge: the patient was discharged to home in stable condition with vna services on . , m.d. procedure: extracorporeal circulation auxiliary to open heart surgery diagnostic ultrasound of heart open and other replacement of aortic valve with tissue graft resection of vessel with replacement, thoracic vessels diagnoses: sciatica thoracic aneurysm without mention of rupture aortic valve disorders 

Answer: The patient is high likely exposed to