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 49 year old male with long standing history of myoma, mitral valve disease times 20 years which had been followed by serial echocardiograms. given this finding, the patient has been scheduled for mitral valve repair on , by dr. . past medical history: 1. mitral valve disease with four plus mitral regurgitation by echocardiogram. 2. collar bone fracture as a child. 3. hypercholesterolemia which is now diet controlled. past surgical history: vasectomy. social history: the patient currently lives with his wife and two children and works as an engineer. no smoking history and one to two beers a night alcohol history. allergies: no known drug allergies. medications: no home medications. laboratory: the patient's labs on , included white blood cell count of 7.1, hematocrit 25.8, platelets 135. sodium 139, potassium 4.7, chloride 103, bicarbonate 29, bun 9, creatinine 0.7. glucose 101. magnesium 1.7, calcium 8.1, phosphorus 2.0. physical examination: vital signs are temperature of 99.1 f.; pulse 82 and sinus; blood pressure 108/56; respiratory rate 16; 95% on room air. in general: well-developed, well-nourished male in no apparent distress. heent: sclerae anicteric. cranial nerves ii through xii intact. mucous membranes were moist. no evidence of oral ulcers; no cervical lymphadenopathy noted. chest is clear to auscultation bilaterally. chest tube sites with no evidence of erythema or purulence. cardiac is regular rhythm and rate. no evidence of murmurs, rubs, click. abdomen was soft, nondistended, nontender, with no evidence of hepatosplenomegaly and no inguinal lymphadenopathy. extremities with no evidence of edema, no evidence of rash. hospital course: the patient is a 49 year old male with a long standing history of mitral valve disease who underwent an uncomplicated minimally invasive mitral valve repair with quadrangular resection of posterior leaflet and mitral annuloplasty with 30 millimeter . indications for the surgery were mitral regurgitation due to flail posterior leaflet. postoperatively the patient was taken to the cardiac surgical recovery unit for close observation. although the patient required a minimal amount of pressor support, the patient was in sinus rhythm and maintained good oxygenation with minimal peep and pressure support. by postoperative day number two, the patient's pressors had been weaned off. the patient was breathing spontaneously. for hematocrit of 22.2, the patient was transfused one unit of packed red blood cells. by this time, the patient was also extubated and maintained good oxygenation with minimal o2 support. by postoperative day number three, the patient was out of bed, ambulating and achieving discharge criteria per physical therapy. at this time, however, the patient developed asymptomatic nonsustained ventricular tachycardia of ten beats. electrophysiology consultation was obtained. the electrophysiology consultation recommended an addition of an ace inhibitor and increasing the beta blockers. since this did not indicate an increase in risk for developing symptomatic arrhythmias, the patient was discharged from the hospital with close follow-up by cardiology. condition on discharge: good. discharge status: to home. discharge diagnoses: 1. status post minimally invasive mitral valve repair with quadrangular resection of posterior flail leaflet and mitral annuloplasty. discharge medications: 1. metoprolol 50 mg p.o. twice a day. 2. percocet one to two tablets p.o. q. four hours p.r.n. pain. 3. colace 100 mg p.o. twice a day. 4. aspirin 325 mg p.o. q. day. 5. ace inhibitor to be started by cardiologist. discharge instructions: 1. the patient was instructed to follow-up with dr. in four weeks. 2. the patient was also instructed to follow-up with dr. in seven days. , m.d. dictated by: medquist36 d: 14:39 t: 17:00 job#: procedure: extracorporeal circulation auxiliary to open heart surgery open heart valvuloplasty of mitral valve without replacement diagnoses: pure hypercholesterolemia mitral valve disorders cardiac complications, not elsewhere classified paroxysmal ventricular tachycardia 

Answer: The patient is high likely exposed to