Question

How many hours after birth does a newborn usually pass their first urine, and when do they typically void after each feeding?

A) First urine at 12 hours; void after each feeding

B) First urine at 24 hours; void after each feeding

C) First urine at 6 hours; void after every other feeding

D) First urine immediately after birth; void after every third feeding

Answer 1

A newborn typically passes their first urine within 24 hours after birth, and they usually void shortly after each feeding due to their immature kidneys' inability to concentrate urine effectively.

Step-by-step explanation:

The question regards the typical time frame for a newborn to pass their first urine and the frequency of voiding after feedings. Normally, newborns have their first urine within 24 hours of birth, although it can occur sooner. As for voiding after feedings, a healthy newborn often urinates shortly after each feeding, which could be every 2-3 hours. This frequent urination is due to their immature kidneys, which are not yet efficient at concentrating urine, making it even more crucial for them to receive adequate fluids through breast milk or formula to maintain proper hydration.

It is essential for healthcare professionals and parents to monitor the frequency of a newborn's urination to ensure that the baby is getting enough fluids and that their kidneys are functioning properly. Any significant delays in first urination or unusually infrequent urination could warrant further medical evaluation.