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 61-year-old man who was found to have a systolic click on physical exam in . he was asymptomatic for many years. in a visit to his cardiologist in the patient was noted to have afib with an echo showing mitral valve prolapse. in , the patient developed a progressive cough, and in he developed progressive shortness of breath and chf. he was referred to ct surgery for evaluation for mvr. at that time, a cardiac cath done in supported a diagnosis of severe mitral regurgitation and found no coronary artery disease. he was admitted to for management of his congestive heart failure as well as evaluation for transplant. the patient's cath done on the showed 4+ mr, with an ef of 50%, with severe pulmonary hypertension, mild ms, and no coronary artery disease. an echo done on showed an ef of 60%, with partial mitral valve flail and thickening of the mitral valve chordae, 3+ mr with no mitral stenosis, 2+ tr with a dilated right and left atrium, and severe pulmonary systolic hypertension. past medical history: significant for mitral regurgitation, atrial fibrillation, basal cell ca of the chest, lactose intolerance, allergic rhinitis. past surgical history: significant for anal fissure repair approximately 20 years ago. allergies: the patient states no known drug allergies. medications on admission: include lasix 80 mg q.a.m. and 40 mg q.p.m., lisinopril 10 mg daily, toprol-xl 100 mg b.i.d., warfarin 5 mg daily (with the last dose being taken on ). social history: he lives with his wife in . he is a retired physician. tobacco use. alcohol use is limited to 2 glasses of wine per day. family history: father with cad with a mi in early 30s. review of symptoms: significant for a history of congestive heart failure, 3-pillow orthopnea, history of anxiety and panic attacks. physical examination prior to admission: includes a height of 5 feet 10.5 inches and weight of 159 pounds. vital signs with a temperature of 96.4, heart rate of 98, blood pressure of 128/73, respiratory rate of 18, and o2 saturation of 94% on room air. in general, in no acute distress. neurologically, alert and oriented x 3. moves all extremities. follows commands. respiratory is clear to auscultation bilaterally. cardiovascular with a regular rate and rhythm, s1 and s2, with a murmur. the abdomen is soft, nontender, and nondistended with normal active bowel sounds. the extremities are warm and well perfused with trace edema bilaterally. the pulses are 1+ throughout. the neck is supple with no carotid bruits, and jvd sitting bolt upright. procedure: extracorporeal circulation auxiliary to open heart surgery arterial catheterization open heart valvuloplasty of mitral valve without replacement injection or infusion of nesiritide diagnoses: mitral valve disorders urinary tract infection, site not specified congestive heart failure, unspecified atrial fibrillation other chronic pulmonary heart diseases 

Answer: The patient is high likely exposed to