Neonatal Nurse Practitioner Practice Exam

Which assessment finding indicates adequate renal function in a neonate?

1. Urine output of less than 1 mL/kg/hr

2. Urine output of 1-3 mL/kg/hr

3. Serum creatinine levels within adult range

4. No urine production over 12 hours

The correct answer is: Urine output of 1-3 mL/kg/hr

A urine output of 1-3 mL/kg/hr is indicative of adequate renal function in a neonate. This range reflects the nephron's ability to filter blood and maintain fluid and electrolyte balance, which is crucial for the overall health of new infants. Adequate renal function is characterized by the ability to produce sufficient urine, as it signifies that the kidneys can effectively filter waste products and regulate fluid status. In neonates, maintaining hydration and ensuring proper renal output is a vital aspect of monitoring their health and development. A urine output within the specified range demonstrates that the kidneys are functioning properly and that the neonate is adequately hydrated. This also suggests that there are no significant obstructions or dysfunctions affecting the renal system. In contrast, a urine output of less than 1 mL/kg/hr suggests potential renal insufficiency or dehydration, which is a cause for concern and would require further evaluation. Serum creatinine levels within the adult range would not be a suitable measure of renal function in neonates, as their creatinine levels should be lower due to their unique physiology. Additionally, no urine production over 12 hours is a clear sign of renal dysfunction and indicates the need for immediate medical assessment and intervention.