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: allergies: patient recorded as having no known allergies to drugs attending: chief complaint: mild dyspnea on exertion and decreased exercise tolerance major surgical or invasive procedure: minimally invasive mitral valve replacement utilizing a 33 millimeter ce pericardial valve history of present illness: mr. in a 56 year old male with history of childhood heart murmur. prior to this year, he has not undergone cardiac evaluation. an echocardiogram in revealed mod-severe mr prolapse and an lvef of 65%. there was moderate left atrial enlargement and only trace ai. stress echocardiogram in found no evidence of ischemia and did not produce anginal symptoms. subsequent cardiac catheterization in confirmed + mr and an lvef of 55%. coronary angiography revealed a right dominant system and normal coronary arteries. based on the above results, he was referred for cardiac surgical intervention. overall, mr. remains mostly asymptomatic. he admits to mild doe, slightly decreased exercise tolerance and occasional palpitations. prior to his diagnosis of mr, he had been exercising several times per week, including biking and tennis. he denies chest pain, sob, syncope, presyncope, orthopnea, pnd, cough and pedal edema. he denies history of rheumatic fever. past medical history: mitral regurgitation; history of gingival disease and excessive tooth decay; legally deaf in right ear - s/p inner ear surgery; s/p hernia repair; s/p tonsillectomy social history: quit tobacco over 4 years ago but currently enjoys an occasional cigar. he admits to occasional etoh drink. no history of excessive etoh abuse. he is single and without children. works in finance, and currently lives with a friend. family history: father died of chf at age 69. mother and sister have "mitral valve disease". physical exam: vitals: bp 132/66, hr 65, rr 14, sat 96% on room air general: well developed male in no acute distress heent: oropharynx benign, eomi, sclera anicteric neck: supple, no jvd, heart: regular rate, normal s1s2, 3/6 systolic murmur best heard llsb which radiates to axilla lungs: clear bilaterally abdomen: soft, nontender, normoactive bowel sounds ext: warm, no edema, no varicosities pulses: 2+ distally neuro: alert and oriented, cn 2-12 grossly intact, mae, strength, no focal motor deficits noted pertinent results: 06:10am blood wbc-9.4 rbc-2.98* hgb-9.3* hct-26.4* mcv-89 mch-31.2 mchc-35.3* rdw-13.6 plt ct-100* 06:10am blood glucose-121* urean-15 creat-1.0 na-138 k-4.4 cl-105 hco3-26 angap-11 06:10am blood mg-1.7 brief hospital course: mr. was admitted and underwent a minimally invasive mitral valve replacment utilizing a 33 mm ce pericardial tissue valve. for further details, see operative note. following the operation, he was brought to the csru for invasive monitoring. he required no inotropic support. within 24 hours, he awoke neurologically intact and was extubated. he did well and transferred to the sdu on postoperative day one. chest tubes were removed without complication. low dose beta blockade was resumed. he was gently diuresed toward his preoperative weight. he remained in a normal sinus rhythm. he made steady progress and by postoperative day 4, he was cleared for discharge to home. . medications on admission: toprol xl 25 mg qd discharge medications: 1. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). disp:*60 capsule(s)* refills:*0* 2. aspirin 81 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po daily (daily). disp:*30 tablet, delayed release (e.c.)(s)* refills:*2* 3. furosemide 20 mg tablet sig: one (1) tablet po q12h (every 12 hours) for 7 days. disp:*14 tablet(s)* refills:*0* 4. potassium chloride 10 meq capsule, sustained release sig: two (2) capsule, sustained release po q12h (every 12 hours) for 7 days. disp:*28 capsule, sustained release(s)* refills:*0* 5. metoprolol tartrate 25 mg tablet sig: 0.5 tablet po bid (2 times a day). disp:*30 tablet(s)* refills:*2* 6. oxycodone-acetaminophen 5-325 mg tablet sig: 1-2 tablets po every 6-8 hours as needed for pain. disp:*50 tablet(s)* refills:*0* 7. ibuprofen 600 mg tablet sig: one (1) tablet po q6h (every 6 hours) as needed for pain. disp:*100 tablet(s)* refills:*0* discharge disposition: home with service facility: homecare discharge diagnosis: mitral regurgitation - s/p minimal invasive mitral valve replacement utilizing a 33 millimeter ce pericardial valve history of gingival disease and excessive tooth decay legally deaf in right ear - s/p inner ear surgery s/p hernia repair s/p tonsillectomy discharge condition: good discharge instructions: patient may shower, no baths. no creams, lotions or ointments to incisions. monitor wounds for signs of infection. please call with any concerns or questions. followup instructions: dr. in weeks dr. in 2 weeks dr. in 2 weeks procedure: extracorporeal circulation auxiliary to open heart surgery open and other replacement of mitral valve with tissue graft diagnoses: mitral valve disorders 

Answer: The patient is high likely exposed to