Maximum urine osmolality in preterm neonate:: (A) 200, (B) 400, (C) 500, (D) 800
Answer is C. c. 500(Ref: Nelson 20/e 349; Pediatric Urology By John G. Gearhart pg 15-20)Premature infants have an even more limited capacity to concentrate their urine than those born at term, with a maximum urine osmolality of about 500mOsm/kgH2 O.