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 an 84 year-old gentleman with a history of stroke and normal pressure hydrocephalus status post vp shunt who fell on after slipping on some ice. he is unsure if he hit his head and had no loss of consciousness. family reports that over the last 24 hours he has had difficulty with his speech and walking. he denies any headache currently. he has a productive cough. no diplopia. no fever. no nausea or vomiting. past medical history: 1. coronary artery disease. 2. pernicious anemia. 3. normal pressure hydrocephalus status post vp shunt. 4. history of right hemispheric stroke with residual aphagia. 5. benign prostatic hypertrophy. 6. gastroesophageal reflux disease. 7. hypercholesterolemia. 8. hypertension. 9. chronic obstructive pulmonary disease. physical examination: on physical examination vital signs are stable. the patient was awake, alert and oriented times two. his shunt was visible in his right temporal area. his pupils are equal, round and reactive to light. extraocular movements intact. lungs clear to auscultation. cardiovascular regular rate and rhythm. abdomen soft, nontender, nondistended. positive bowel sounds. extremities no edema. neurological awake, alert and oriented to person and place, unsure of the city. his motor strength was 4 out of 5 on the right side and 5 out of 5 on the left. he had a right facial droop and right pronator drift. ct showed 2 cm left frontal parietal subdural hematoma with significant midline shift. hospital course: the patient was therefore taken immediately to the operating room where he underwent a left craniotomy for evacuation of subdural hematoma without intraoperative complications. postoperatively, the patient was monitored in the surgical intensive care unit where he had a drain in place and remained on flat bed rest. the patient had a repeat head ct on postoperative day number one, which showed a large amount of air as well as some residual subdural hematomas. neurologically the patient was sleepy, but arousable, moving all extremities with continued right sided weakness. the patient was kept in the intensive care unit on flat bed rest with drain in place. on postoperative day number two the patient's mental status somewhat improved. he was oriented to name only, following commands. he still had right facial weakness and right upper extremity weakness. a second repeat head ct showed continued air and a small amount of residual subdural hematoma. the patient was therefore considered for a repeat craniotomy for ligation of his vp shunt although it was felt that this could be done at the bedside. the patient had his subdural drain discontinued on and was transferred to the regular floor. on he underwent bedside ligation of his vp shunt in order to assist in reexpanding his brain and decreasing the air in his head. the patient tolerated the procedure well. his vital signs have remained stable. he is awake, alert and oriented times three. he has a slight right pronator drift. he was seen by physical therapy and occupational therapy and found to require a short rehab stay prior to discharge to home. his vital signs and medications on discharge include zantac 150 mg po b.i.d., diltiazem 180 mg po q day, ________________ 5 mg po q day, albuterol inhaler one to two puffs q 6 hours prn, lipitor 10 mg po q day, colace 100 mg po b.i.d., percocet one to two tabs po q 4 hours for pain. the patient's condition is stable at the time of discharge and he will follow up with dr. in two to three weeks time with a repeat ct scan at that time. , m.d. dictated by: medquist36 procedure: incision of cerebral meninges replacement of ventricular shunt gingivoplasty diagnoses: obstructive hydrocephalus esophageal reflux pure hypercholesterolemia unspecified essential hypertension chronic airway obstruction, not elsewhere classified unspecified fall subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness late effects of cerebrovascular disease, aphasia 

Answer: The patient is high likely exposed to