What is the expected urinary finding in a normal newborn assessment?

The expected urinary finding in a normal newborn assessment is urine passage within 24 hours. In healthy newborns, the kidneys are generally capable of producing urine shortly after birth; however, it is common for them to pass urine within the first 24 hours. This timeframe allows for initial physiological adaptations after birth and ensures that the newborn is properly hydrated and transitioning well from intrauterine to extrauterine life.

In the first day of life, some variability exists in when exactly the first void occurs, but the absence of urine output for the first 24 hours can warrant further evaluation for potential hydration or renal issues. Therefore, monitoring urine output is an important aspect of newborn assessments, as timely passage of urine is an indicator of proper kidney function and hydration status.