![]() ![]() Urine electrolytes and osmolarity offer additional information as to urine concentrating ability.Urine output should be 1 – 3 mL/kg/hr by the 3 rd day of life.With a changing GFR and variable urine concentration, all newborns undergo a diuresis in the days following birth resulting from a reduction of TBW. In addition, glomerular filtration rates (GFR) are low in utero and remain low at birth and gradually increase in the neonatal period. Humidity for Premature Neonates RCH nursing guidelineįoetal urine flow steadily increases with gestational age reaching 25 – 50 mL/hr at term and dropping to 8 – 16mL/hr (1-3mL/kg/hr) at birth reflecting the large exchange of TBW during foetal life and the abrupt change occurring with cardiopulmonary adaption after birth. ![]()
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