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: discharge diagnoses: 1. status post minimally invasive mitral valve replacement with 34 ring. 2. postoperative seizure. 3. status post cerebrovascular accident with residual left-sided weakness. 4. hypertension. 5. seasonal allergies. history of present illness: this is a 49-year-old female patient of dr. , who presents with known mitral valve prolapse discovered on routine physical exam approximately three years ago. the patient is followed by serial echocardiograms since that time, and is referred to cardiology for cardiac catheterization prior to mitral valve replacement. patient reports chest tightness and dyspnea with exercise. most recent echocardiogram in shows an ejection fraction of 60-70%, left atrium which is mildly dilated, mitral valve leaflets, which are moderately thickened with myxomatous change, moderate-to-severe mitral valve prolapse, and +4 mitral regurgitation. the patient had recent holter monitor, which showed nonsustained three beat runs of ventricular tachycardia. patient presents for elective repair of mitral valve prolapse. past medical history: 1. hypertension. 2. mitral valve prolapse. past surgical history: patient has no past surgical history. allergies: there is no known drug allergies. medications at home: 1. lisinopril 10 mg p.o. q.d. 2. flonase q.d. 3. mvi. 4. vitamin c. social history: denies tobacco. occasional etoh drinks per week. family history: significant for grandmother with an enlarged heart. review of systems: shows no history of stroke or tia. no syncope or lightheadedness. there is no copd, asthma, or cough. there is no nausea, vomiting, or diarrhea. no gastritis and no peptic ulcer disease. there is no bleeding, no hematochezia, and no melena, and no peripheral vascular disease, or claudication, or edema. admission laboratories: white count of 5.1, hematocrit of 35.5, and a platelet count of 231. the patient's sodium is 139, potassium is 4.1, chloride is 107, bicarb was 28, bun was 15, creatinine was 0.7. patient's coags showed a pt of 13.3 with an inr of 1.0. patient's liver function studies were all normal. urinalysis was negative. chest x-ray was without any acute processes. ekg was sinus rhythm at a rate of 75. catheterization results showed an ef of 55%, + mitral regurgitation, no coronary artery disease. physical exam: the patient was in no acute distress, was 62 in sinus rhythm, blood pressure of 124/68, respiratory rate of 18, and saturating 99% on room air. patient was in no acute distress. pupils are equal, round, and reactive to light. patient had anicteric sclerae. moist mucous membranes. neck was supple with no lymphadenopathy, no jvd. chest was clear to auscultation bilaterally. heart was regular rate and rhythm with a normal s1, s2. patient had a 5/6 systolic ejection murmur. abdomen was soft, nontender, and nondistended with normoactive bowel sounds. extremities were warm and well perfused. there are no varicosities. pulses showed 2+ carotids with no bruits, 2+ femoral arteries, 2+ radial arteries, and 2+ dorsalis pedis. neurologic examination: she was alert and oriented times three. followed commands, 5/5 strength and sensation throughout all extremities. assessment and plan: this is a 49-year-old female with known mitral valve prolapse, clear coronary arteries returning to have elective repair of mitral valve regurg. on , the patient underwent minimally invasive mitral repair with a 34 ring. patient tolerated the procedure well. was transferred to the csru in stable condition. on date of procedure, patient when awaking from anesthesia was noticed to have some paralysis of her left arm and left leg. patient had easily palpable pulses. a left radial a line tracing was good wave form. patient was following commands, moving right upper extremity and right lower extremity and left lower extremity, but not moving the left upper extremity. patient was not responding to painful stimuli on left nailbeds, and the patient's left arm was flaccid. neurology consult was placed. neuro exam was complete and patient had gross muscle twitching noted in the area of her left scapula, left neck, and left face. the patient developed twitch from the left side, which was difficult to pinpoint the exact location of the twitch. the patient was given ativan for the twitch approximately 14 separate incidents of muscle spasm observed over 30 minutes even after ativan was given. patient went for head ct scan. just after completing head ct scan, the patient noticed twitching in the right arm 2-3 episodes of these different appearing right arm twitches. the right arm activity appeared to last for several seconds. the patient was started on dilantin given 1 gram iv push bolus when return to the csru. ct scan preliminary on was read as negative. patient was then scheduled for a mr of the brain. preliminary read on of the mr of the brain was negative except for a right frontal microbleed. on postoperative day one status post mitral valve repair, the patient continued to have left upper extremity weakness. patient was continued on depakote. patient was on neo-synephrine and propofol drips. patient was afebrile and vital signs were otherwise stable. patient, however, was following commands and was able to freely move right extremity without difficulty. on postoperative day #2, official mri read noted no acute stroke, old infarct. patient had been without any further episodes of twitch or seizure activity. patient had increased left lower extremity strength, but minimal to no left upper extremity movement. patient was awake and alert with brief period of atrial fibrillation with heart rates in the 110s-150s. patient was weaning off the neo-synephrine drip. patient was continued on depakote. patient's atrial fibrillation resolved with 10 mg of metoprolol. patient's t max was 100.1, otherwise was afebrile with stable vital signs. patient was intubated. on hospital day #2, the patient was extubated. patient was continued to be followed by neurology. on postoperative day #3, the patient had been extubated previously with no event. patient was scheduled for followup mri. patient had no new seizures. afib episode responded to lopressor. patient also had slight left hand grasp, which was improved with previous. patient was afebrile with stable vital signs. patient was seen by occupational therapy and neurology. patient was also seen by physical therapy. on postoperative day #4, the repeat mri revealed scattered matter hypodensities not in a pattern typical for an infarct. patient with trace improvement in left upper extremity strength. patient was alert and oriented, and ambulated having no additional seizure activity. patient was started on metoprolol 25 b.i.d. for episodes of atrial fibrillation. the patient was continued on depakote. patient's t max was 99.6. otherwise, vital signs were all within normal limits. patient was continued on physical therapy, monitored on neurologic examination, and awaiting for followup mri on following day. on postoperative day #5, patient continued to have improvement of left upper extremity strength. reported some visual activity, however, vision was intact bilaterally. patient had no seizures and no atrial fibrillation. patient was afebrile with stable vital signs, and was in good spirits. neurologic examination continued to be monitored and continued to be monitored for afib. patient was with her family on postoperative day #6. on postoperative day #6, the patient's strength was slightly improved. patient had no episodes of afib or seizures. patient was ambulating with some occasional visual abnormalities. patient described them as halo over lights. patient was on depakote. patient was afebrile with stable vital signs. patient was transferred to the floor. on postoperative day seven, discharge planning was begun. the patient was afebrile with stable vital signs. patient was scheduled for a followup mri to be done upon transfer to the floor. patient was transferred to the floor in stable condition. on postoperative day #8, patient was continued on aspirin and metoprolol. continued on her depakote. her risperidone had been d/c'd. patient was afebrile with stable vital signs. patient was ambulating well with physical therapy. rehab level 4. patient's disposition was to home. patient's white count upon transfer to the floor was 7.7, hematocrit 27.4, platelet count is 341. sodium is 139, potassium is 4.4, chloride was 105, bicarb is 29, bun 13, creatinine of 0.7, and glucose is 101. patient's calcium of 8.4, magnesium of 2.0, and a phosphate of 4.5. patient had a repeat mri done. patient's repeat mri showed no real change from previous mri. there was frontal and parietal infarcts. patient continued to have improvement with her strength in the left upper extremity. on postoperative day nine, the patient was afebrile with stable vital signs. patient was seen one last time by neurology and scheduled for neurology followup. the patient was discharged to home in stable condition with family. patient was tolerating a regular diet. pt level is 5. discharge medications: 1. aspirin 325 one tablet p.o. q.d. 2. metoprolol 12.5 p.o. b.i.d. 3. tylenol prn. 4. dulcolax prn. 5. depakote 250 mg p.o. q.a.m., 500 mg p.o. midday, and 500 mg p.o. at 8 p.m. 6. ibuprofen 600 mg p.o. q.6. 7. colace 100 mg p.o. b.i.d. fop instructions: patient will follow up with dr. in one month. patient will follow up with neurology as scheduled with neurology attending. condition on discharge: patient is discharged home in stable condition tolerating a regular diet. , m.d. dictated by: medquist36 procedure: extracorporeal circulation auxiliary to open heart surgery open heart valvuloplasty of mitral valve without replacement diagnoses: mitral valve disorders unspecified essential hypertension atrial fibrillation other convulsions iatrogenic cerebrovascular infarction or hemorrhage 

Answer: The patient is high likely exposed to