<prompt> Regarding FeNa, which of the following is true?FeNa is lower in neonates when compared to childrenFeNa is higher in intrinsic renal failure than pre renal failureMeasurement of FeNa is NOT affected by use of diureticFeNa is similar in both pre term and term neonate  <response>: 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 