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: past medical history: patient has mr approximately 20 years ago, asymptomatic until last year. had some shortness of breath over the past week and positive dyspnea on exertion. medications: home medications include zestril 10 mg po q d, aspirin 81 mg po q d. past surgical history: included herniated disc repaired in and trigger finger repaired in . ho course: the patient was taken by dr. to the or, underwent mitral valve replacement on . it was a porcine mitral valve. postoperatively the patient did well initially, however, after extubation the patient was not able to tolerate it and was reintubated times one. subsequently on postoperative day #2 the patient developed bilateral pleural effusion and bilateral chest tube was placed to drain out pleural fluid and also patient developed atrial fibrillation that was treated with amiodarone. the patient was extubated and transferred to the floor on postoperative day #4. once transferred to the floor the patient was weaned off drip in the intensive care unit without any incidents and patient was transferred on to the floor. while on the floor chest tube was discontinued, however, patient was still in atrial fibrillation. electrophysiology service was consulted and they cardioverted patient on postoperative day #5 and patient was subsequently placed on heparin and coumadin. the patient was also placed on levaquin 500 mg and full course will end for a positive e. coli in the sputum culture. subsequently on postoperative day #6 the patient reverted to regular rate and rhythm. however, patient had a short burst of frequent pvcs and eps was further consulted and recommended no treatment required at this time. however, they do recommend putting patient on aldactone and amiodarone at 400 mg po tid times a week, then go to amiodarone 400 mg po q d times two months. prior to discharge the patient was able to ambulate at level ii to iii with physical therapist. the patient will be discharged to a rehab facility. upon discharge patient's chest was clear, incision was clean, dry and intact, no drainage, no pus. sternum was stable and patient was in normal sinus rhythm. die medications: lopressor 12.5 mg po bid, aspirin 81 mg po q d, aldactone 25 mg po q d, amiodarone 400 mg po tid times five days, then 400 mg po q d, levaquin 500 mg po q d until , protonix 40 mg po q d and coumadin 2.1 mg po times one dose, then check levels and dose accordingly. the patient was told to follow-up with dr. in weeks and patient will be discharged to a rehab facility and it was instructed on page 1 that rehab facility check patient's inr level on sunday, , and adjust coumadin level accordingly to achieve inr of between 2 and 2.5. also during hospital course the patient had an elevated creatinine to 1.6, however, it was decreasing when patient was discharged and prior to discharge patient's weight was almost the same as preoperative weight, therefore it was decided to discontinue the lasix and potassium chloride and just send patient home on aldactone. the patient is to be followed up with his primary care cardiologist and with dr. in weeks. , m.d. dictated by: medquist36 procedure: insertion of intercostal catheter for drainage open and other replacement of mitral valve with tissue graft diagnoses: mitral valve disorders unspecified pleural effusion atrial fibrillation acute bronchitis 

Answer: The patient is high likely exposed to