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: the patient is a 68 year old male with a history of depression, bursitis and hypercholesterolemia, who began noticing exertional dyspnea approximately three months ago. at that time, he had had an echocardiogram that showed a flail posterior segment of the mitral valve as well as severe mitral regurgitation. the patient had a preoperative evaluation that included a cardiac catheterization showing normal coronary arteries. he had a left ventricular ejection fraction of approximately 50%, a wedge pressure of 26 and a pulmonary artery pressure of 53/31. given the patient's symptoms and severity of the flail segment, he was therefore slated a quadrangular resection of the posterior leaflet valve and repair with annuloplasty. laboratory data: preoperative laboratory values were notable for a white blood cell count of 7, hematocrit 43, bun and creatinine 20 and 0.9 and normal liver function tests. a chest x-ray was negative for any acute cardiopulmonary process. ho course: the patient was taken to the operating room on , where he underwent elective repair of his valve. dr. repaired the valve using a quadrangular resection and a #28 - ring was utilized for the annuloplasty. the patient was noted to have good biventricular function postoperatively by transthoracic echocardiogram as well as only a small trace of mitral regurgitation with the new valve. the patient was transferred to the csru, where he was quickly extubated on the night of surgery. he was maintained on pressors until the following day of surgery, at which time they are weaned. his cardiovascular status quickly stabilized. the patient was transferred to the floor on postoperative day number one on a beta blocker, aspirin and antihyperlipidemic . he was started with physical therapy and a normal diet was instituted. he was out of bed ambulating and, by day number two, he was level three out of five. by postoperative day number four, the patient was noted to be ambulating freely without assistance. his pain was well controlled. he was tolerating his diet. he had already had a bowel movement. chest tubes and foley catheter had already been removed on postoperative days one and two respectively. a chest x-ray status post discontinuation of chest tubes showed no evidence of pneumothorax, well expanded lungs, some basilar atelectasis and small right pleural effusion. laboratory data on discharge were notable for a white blood cell count of 9, hematocrit 22, platelet count 115,000, potassium 4.6, bun 20, creatinine 0.9, calcium 8.1, magnesium 2 and phosphorous 2.7. the patient was started on a low dose ace inhibitor postoperatively as well, on postoperative day number two. this was held for persistently labile blood pressure. he was weaned off the epicardial pacing leads and, by postoperative day number four, he continued to do well. on , the patient was deemed appropriate for discharge and was sent home. on discharge physical examination, he was in no acute distress. he was afebrile with a maximum temperature of 98.5, blood pressure 117/60, pulse 80s to 90s, he was atrially paced at that time, and fingerstick was 132. his wound sites were clean, dry and intact without erythema or exudate. he had a stable sternum with staples in place. his lungs were clear except for decreased sounds at the left base, no crackles. abdomen was benign. lower extremities were warm and well perfused with palpable dorsalis pedis and posterior tibialis pulses bilaterally. the patient was ambulating with a cane. physical therapy stated he was appropriate for discharge. fop: the patient will have follow-up in the clinic at six at in one week from the time of discharge. the patient will follow up with dr. in one month. he will see his cardiologist in two to four weeks. discharge medications: lopressor 12.5 mg p.o.b.i.d. captopril 6.25 mg p.o.b.i.d. pravachol 20 mg p.o.q.h.s. percocet p.r.n. pain. colace 100 mg p.o.b.i.d. aspirin 325 mg p.o.q.d. lasix 20 mg p.o.q.a.m. times seven days. k-dur 20 meq p.o.q.a.m. times seven days. protonix 40 mg p.o.q.d. vitamin e. motrin p.r.n. discharge instructions: instructions regarding the patient's activity, driving, lifting, etc., were provided in the patient care packet. condition at discharge: stable. discharge status: the patient was discharged to home. discharge diagnosis: severe mitral regurgitation with flail posterior segment, status post mitral valve posterior segment repair with annuloplasty. , m.d. dictated by: medquist36 procedure: extracorporeal circulation auxiliary to open heart surgery open heart valvuloplasty of mitral valve without replacement diagnoses: pneumonia, organism unspecified pure hypercholesterolemia mitral valve disorders 

Answer: The patient is high likely exposed to