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: uncontrolled pain major surgical or invasive procedure: r total knee replacement history of present illness: 49 y/o s/p r total knee replacement with uncontrolled pain. pt was receiving morphine pca 1 mg q 6 min w/ cont'd pain. epidural placed. pt was comfortable but he was sleepy after epidural because he received 36 mg morphine at the pacu. in addition he had episodes of apnea with sbp to 90 requiring phenylephrine to reach sbp of 100. uop >30cc/hr throughout. transferred to for continued close monitoring. past medical history: htn, b/l osteoarthritis social history: lives in with wife. previously functional of adls. initially from . primary language is porteguese, but he is able to speak english and refuses need for translator. family history: non-contributory physical exam: vitals- t 96.7, bp 87/51 (65), hr 90, rr 19, 100% on 3l nc gen- sleepy but arousable, responds to questions, pain in r knee heent- eomi. pinpoint pupils, equal b/l. + mild proptosis and scleral injection. non-icteric. op clear. membranes moist pulm- cta anteriorly. no r/r/w cv- rrr. normal s1/s2. no m/r/g abd- soft, nt/nd. nabs ext- r knee braced in cpm device. immobile. wrapped w/ pressure gauze and covered w/ ice packs. tube draining sanguinous fluid. able to wiggle r toes. palpable dp pulse, w/ warm extremities. l leg w/ no erythema, swelling or tenderness, scd in place. neuro- alert and oriented to person, place " building", time; cn ii-xii intact. language appropriate. pertinent results: 08:23pm hct-32.6* brief hospital course: the patient was admitted and taken to the or on for a right tka post operatively the patient required large doses of morphine for pain controle. his respiratory status became depressed on these dose of morphine. the acute pain service placed an epidural that provided effective pain controle. after the epidural was placed his systolic blood pressure dropped to the low 70s. he was started on pressures and volume resusitated. he had to be transferred to the micu that evening because the pacu is not kept open over night. initially post operatively the patient had a large output from his drain. his knee was flexed at 60 degrees and ice applied which stopped the output. pod 1: the patient did well and was started on cpm. his pain improved and was wheened off the epidural and pressures and transferred to the floor. he was started on lovenox. physical therapy was consulted and worked with him towards goal of being independent. pod 2: the dressing was changed and the drain was pulled. the remainder of his hospital course was unremarkable. physical therapy continued to see him daily until safe to discharge. medications on admission: meds on transfer: amlodipine 10mg qday keflex 1g q8 (x 6 doses)- day 1= lovenox 40 sq qday (on hold) hctz 25mg qday percocet prn lisinopril 5mg daily hydromorphone 10 mcg/ml + bupivacaine 0.1% 1 mg/ml ed infuse at 8-12 ml/hr phenylephrine gtt discharge medications: 1. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). disp:*60 capsule(s)* refills:*2* 2. enoxaparin sodium 40 mg/0.4ml syringe sig: one (1) subcutaneous daily (daily) for 24 days. disp:*qs box* refills:*0* 3. hydromorphone hcl 2 mg tablet sig: 1-2 tablets po every hours as needed. disp:*60 tablet(s)* refills:*0* 4. amlodipine besylate 5 mg tablet sig: two (2) tablet po daily (daily). 5. hydrochlorothiazide 25 mg tablet sig: one (1) tablet po daily (daily). 6. lisinopril 5 mg tablet sig: one (1) tablet po daily (daily). discharge disposition: home with service facility: caregroup vna discharge diagnosis: right knee osteoarthritis post-op anemia hypotension discharge condition: stable discharge instructions: please cont with weight bearing as tolerated right leg. oral pain medication as needed. lovenox for anti-coagulation as needed. please cont with physical therapy. please call/return if any fevers, increased discharge from incision, or trouble breathing. followup instructions: provider: gates, rnc msn where: musculoskeletal unit phone: date/time: 11:15 procedure: transfusion of packed cells insertion of catheter into spinal canal for infusion of therapeutic or palliative substances systemic to pulmonary artery shunt total knee replacement diagnoses: other iatrogenic hypotension unspecified essential hypertension acute posthemorrhagic anemia drug-induced delirium other specified analgesics and antipyretics causing adverse effects in therapeutic use osteoarthrosis, localized, not specified whether primary or secondary, lower leg 

Answer: The patient is high likely exposed to