Which is true regarding an infant's kidney function?
a. Conservation of fluid and electrolytes occurs.
b. Urine has color and odor similar to the urine of adults.
c. The ability to concentrate urine is less than that of adults.
d. Normally, urination does not occur until 24 hours after delivery.
ANS: C
At birth, all structural components are present in the renal system, but there is a functional deficiency in the kidney's ability to concentrate urine and to cope with conditions of fluid and electrolyte stress such as dehydration or a concentrated solute load. Infants' urine is colorless and odorless. The first voiding usually occurs within 24 hours of delivery. Newborns void when the bladder is stretched to 15 ml, resulting in about 20 voidings per day.
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