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: gi bleeding major surgical or invasive procedure: none history of present illness: yo female with a history of chf, ?uc, and cri who was intially admitted to after she passed out after a sudden episode of large black stool at windamere nh where she resides. at mvh, she received 5u prbc's over 10 days in response to hct on admission at 30. she had a hct nadir at 20 over her hospitalization, now hct stable @ 30 x 3 days (baseline hct 30). she had a negative egd and a colonoscopy on up to 60cm only (secondary inadequate prep). she had no hematemesis during her hospitalization and had a "minimal" amount of black stool since admission. she was transferred to intensive care on for further work up. in the intensive care unit, the patient was treated for h.pylori, transfused 2 units prbcs on and , yet was unable to have colonoscopy because the patient refusing prep. the patient was also hypernatremic on admission, which resolved after free water repletion. the patient was occasionally bradycardic with episodes of pauses, but she was never symptomatic and often sleeping. most notably, the patient had intermittent melena (small amts, at most 50 cc)but managed to stay hemodynamically stable with stable hct 32. the patient communicates only via writing since she is deaf. the patient was transferred to a regular medicine floor for further management. past medical history: * as valve area 0.9cm^2 * cri creat 1.8 at baseline, diagnosed in w/ creat 2.3; * report of ulcerative colitis diagnosed by c-scope, s/p polypectomy; * chf * s/p hip fx * b/l cataracts * b/l oa of knees * deafness - communicates via writing social history: widowed, lives @ windamere's nh (); no hx tobacco use; no ethanol use. family history: unknown physical exam: on discharge, t 96.6 bp 130/72 p 66 r 16 sat 98% ra gen: thin cauc female lying comfortably, nad heent: perlla, eomi, sclara anicteric, no conjuctival injection, mucous membranes slightly dry, no lymphadenopathy, no thryroid nodules or masses, no supraclavicular lymph nodes, no posterior lymphadenopathy, neck supple, full rom, neg jvd, no carotid bruits cor: rrr, s1 and s2 wnl, no murmurs/rubs/gallops : cta bilateally anteriorly, abd: +bs/s/nt/nd/no masses ext: no edema peripherally, no sacral edema, no rash, no posterior tend neuro: ii-xii intact, deaf bilaterally pertinent results: labs: @osh; admission creat 1.8 bun 53; glu 155 alk phos 180 127; ldh/cpk wnl; hct 30; hct 20 hct 25; o/w hct ranging 20-34, stable at 30-31 since wts 124# 119# 121# 107# . on transfer : na 153 k 3.0 hct 35 (s/p 1 u prbc's in transit on , 30 @ osh prior to transfer) now: 09:55am blood wbc-6.6 rbc-4.00* hgb-12.1 hct-35.0* mcv-88 mch-30.2 mchc-34.5 rdw-14.8 plt ct-245 09:55am blood plt ct-245 03:45pm blood glucose-96 urean-17 creat-0.9 na-142 k-4.5 cl-108 hco3-26 angap-13 06:11am blood calcium-8.3* phos-2.5* mg-1.5* egd gastric antrum bx at osh: - chronic gastritis involving antral type mucosa; helicobacter species focally present; ~ rad: @ osh: ct abd to r/o aaa - no iv or po contrast; no aaa, max dia 2.4cm; l 2cm renal cyst; atelectasis or infiltrate @ ll base; liver, pancreas, spleen and adrenals, wnl; cxr:mild cardiomegaly, no pulm edema, no pna; ~ here at : cxr: rij in place, no chf, no pna; ~ ekg: nsr @ 60 bpm, nl axis, nl intervals, no st changes ~ tagged red cell study () impression: focal area of increased tracer uptake in the anterior right pelvis which does not appear to be within the gi tract. it is unclear what the etiology of this is, but possibilities include a fistula, hemangioma or pelvic kidney. brief hospital course: 1. gi bleed: after the patient's initial presentation with melena, she still had small amts of melena (averaging 1 episode of approx 30-50 cc/2-3days). she received a total of 5u prbc's over 10 days at osh and an additional 6 units at . transfusion criterion was to main hct above 27. etiology of the patient's gi bleed remained cryptic after egd which revealed mild gastritis. despite being h.pylori positive, no ulcers were noted. nonetheless, the patient was treated with pantoprazole twice daily. clarithromycin and amoxicillin were given for a 14 day course. colonoscopy at mvh up to 60cm was also unrevealing. repeat colonscopy at showed a polyp in the proximal ascending colon, diverticulosis of the sigmoid colon, blood in the entire colon and terminal ileum. thus a source of bleeding was not identified. repeat egd at showed large hiatal hernia, in the upper potion of the hiatal hernia a healed linear erosion, in the antrum a partially healed linear ulcer. the colonoscope was inserted to the mid-jejunum and no lesions were found in careful examination of the small bowel. it was recommended that the patient continue on proton pump inhibitors and the general impression was that the bleeding site was either of the two abnormalities seen because they were healing. of note, the medical records specified a history of uc, but the patient denies this history and colonoscopy was not consistent with that diagnosis. a tagged red cell gi bleeding was also performed which showed a focal area of increased tracer uptake in the anterior right pelvis which did not appear to be within the gi tract. it was unclear what the etiology of this is, but possibilities include a fistula, hemangioma or pelvic kidney. hematocrits were checked serially 2-3 times per day and the patient was able to hold stable values around 30 for three days at a time. the patient was sent for a small bowel follow through to evaluate for possible strictures or crohn's, but the study was normal, without any evidence of strictures, dilatation, or mucosal abnormality. despite the above full series of studies, it was difficult to unequivocally identify source of the patient's bleeding. it was believed that source was related to healing erosions seen on egd, but definitive diagnosis would only be possible with open surgery. after discussions with the patient, her niece, and the gi service, it was thought that the morbidity of exploratory laparotomy to find source of bleeding would carry too much of a risk for the patient. empiric hormonal therapy with estrogen could be tried next if the gi bleeding continues. antibiotic course for h. pylori has been completed. 2. chf - from her outside record, the patient was on standing lasix. she never appeared to be in failure throughout her floor admission and consistently appeared euvolemic to slightly hypovolemic on exam. lasix was held given hypovolemia and likely pre-load dependence given moderate as. 3. hypernatremia - na 153 on admission was likely secondary to hypovolemic hypernatremia. sodium levels improved to normal limits after free water repletion. daily monitoring revealed no repeat episodes of hyponatremia. 4. cri - the patient carried a diagnosis of chronic renal insufficiency with baseline creat of 1.8, but this value improved to 0.8 on iv fluids. 5. bradycardia - the patient had rare episodes of sinus bradycardia with occasional pauses and junctional escape rhythm. one episode was associated with hypotension but on iv fluid resuscitation, blood pressure were within normal limits. she was never symptomatic. the patient was evaluated by cardiology and bradycardia as well as syncopal episode at were felt to be likely vasovagal and did not recommend a temporary pacemaker. the patient will need outpatient followup with holter monitor. 6. code: full code medications on admission: all: nkda ~ meds on transfer from osh: protonix 40mg po bid lasix 20mg po qd carafate 1gm qid tylenol 325mf po q6h prn ~ meds currently on in micu: clarithromycin 250 po bid amoxicillin 500 po bid protonix 40 mg po bid riss protonix 40 iv bid vitamin k 10 mg po x 3 days zofran prn ~ outpt meds: zantac lasix 20mg po qd azithromycin for presumed pna prior to admission flonase tylenol prn discharge medications: 1. pantoprazole sodium 40 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po q12h (every 12 hours). 2. benzonatate 100 mg capsule sig: one (1) capsule po tid (3 times a day) as needed for cough. 3. menthol-cetylpyridinium cl 2 mg lozenge sig: one (1) lozenge mucous membrane prn (as needed) as needed for dry throat, cough. discharge disposition: extended care facility: windemere nursing & rehabilitation center - discharge diagnosis: gi bleed of undetermined source discharge condition: fair discharge instructions: 1. please take all of your medications. 2. please seek medical attention should you experience any of the following: shortness of breath, chest pain, palpitations, sudden weakness, lightheadedness, dizziness, loss of consciousness, fainting, nausea, vomiting, fever, chills 3. please weigh yourself every morning, md if weight > 3 lbs. 4. adhere to 2 gm sodium diet followup instructions: please follow up with your pcp . within 1-2 weeks, particularly if you experience bloody or dark stools or feel lightheaded, have chest pain, or shortness of breath, or increased fatigue md procedure: other endoscopy of small intestine transfusion of packed cells diagnoses: congestive heart failure, unspecified acute posthemorrhagic anemia aortic valve disorders other specified cardiac dysrhythmias unspecified disorder of kidney and ureter hemorrhage of gastrointestinal tract, unspecified ulcerative colitis, unspecified hyperosmolality and/or hypernatremia benign neoplasm of colon 

Answer: The patient is high likely exposed to