Q: All of the following are considered as risk factors associated with a poor outcome in acute colonic ischemia except?

A) male gender,
B) SBP less than 90 mm Hg
C) BUN more than 20 mg/dL
D) Hgb less than 8 g/dL
E) LDH more than 350 units/L


Answer: D

As per The American College of Gastroenterology, following are considered as risk factors associated with a poor outcome in acute colonic ischemia and risk stratifications may help in decreasing morbidity and mortality. The risk factors associated with poor outcome described are 

• male gender, 
• hypotension (SBP less than 90), 
• tachycardia (heart rate more than 100 beats/minute), 
• abdominal pain without rectal bleeding, 
• blood urea nitrogen (BUN) more than 20 mg/dL, 
• hemoglobin (Hgb) less than 12 g/dL, 
• LDH more than 350 units/L, 
• serum sodium less than 136 mEq/L, and 
• WBC more than 15,000/mm3

Reference:

Brandt LJ, Feuerstadt P, Longstreth GF, et al. ACG clinical guideline: epidemiology, risk factors, patterns of presentation, diagnosis, and management of colon ischemia (CI). Am J Gastroenterol 2015; 110:18.