Answer the question

Q. A previously healthy 5-year-old child is brought urgently to the ED for evaluation. He has had bloody diarrhoea for the past 2 days. He has become increasingly listless over the past several hours and his parents are very concerned. He has no known medical problems. The patient has not travelled anywhere recently and owns no pets. Several days ago, his family ate out at a fish restaurant. The patient had a hamburger because he does not like fish. No one else in the family is ill. Physical examination reveals a very ill-appearing child. He is at least moderately dehydrated. Laboratory analysis is significant for hemoglobin of 7.2 g/dl, platelets of 30,000, BUN 80 and creatinine 2.3. Serum potassium level is 5.6. Peripheral blood smear
Based on the most likely diagnosis, which of the following therapies would be contraindicated at this time?
A. Dialysis, if and when indicated, to maintain proper fluid and electrolyte balance
B. Parenteral (IV) antibiotic therapy upon hospital admission
C. Supportive care, including hydration and ongoing evaluation of fluid status
D. Transfusion of packed red blood cells (PRBCs) for symptomatic anaemia


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