This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Pediatrics
[{'content': 'Regarding FeNa, which of the following is true? \nSelect and explain. \nA. FeNa is lower in neonates when compared to children, B. FeNa is higher in intrinsic renal failure than pre renal failure, C. Measurement of FeNa is NOT affected by use of diuretic, D. FeNa is similar in both pre term and term neonate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fractional excretion of sodium (FeNa) FeNa is the urine:plasma ratio of sodium divided by U:P of creatinine * 100 Neonates have higher FeNa because of tubular immaturity. FeNa is higher in preterm neonates due to immaturity of sodium reabsorptive capacity. FeNa may be affected by diuretics use. Classical lab findings in AKI- Type U Na FeNa Prerenal <10 <1% Intrinsic >20 >2% Postrenal >40 >4%', 'role': 'assistant'}]