This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Shigella associated hemolytic uramic syndrome is associated with all of the following except? 
Select and explain. 
A. Hyperkalemia, B. Thrombocytopenia, C. Neurological symptom, D. Renal micro thrombi
A: Hyperkalemia
Answer: A: Hyperkalemia 
Explanation: Answer is A or None (Hyperkalemia or None) Hyperkalemia is the single best answer of exclusion. HUS may occur with Shigella Dysentriae type I. Clinical features in HUS due to shigella as mentioned in (Harrison 14th/959) include : Oliguria progressing to anuria and renal.failuree Drop in hematocrit progressing to severe anemia and CHFQ CNS abnormalities include - encephalopathic symptoms - seizures - altered consciousness - bizzare posturing * Laboratory : - Profound hyponatremia Q and severe hypoglycemiadeg may be seen - Leukamoid reactions with increased leucocyte counts Qmay be seen - ThrombocytopeniaQ is common cla - Although one might argue that hyperkalemia may as well be a feature of HUS on account of renal failure, 1 have excluded it because all other options have been mentioned directly in the standard Harrison text.