Emergency Medicine Exam 1 Practice

HUS is often preceded by which event?

Bloody diarrhea caused by Viral hepatitis Pneumonia Urinary tract infection

Correct Answer:

Bloody diarrhea caused by

Explanation:

typically develops bloody diarrhea. The Shiga toxin injures the vascular endothelium, especially in the kidneys, leading to microangiopathic hemolytic anemia, thrombocytopenia, and acute kidney injury. This makes bloody diarrhea caused by E. coli the best antecedent for HUS. The other events listed are not the usual triggers for classic HUS.

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