Which is the most common cause of acute renal failure in children?
a. Pyelonephritis
b. Tubular destruction
c. Urinary tract obstruction
d. Severe dehydration
ANS: D
The most common cause of acute renal failure in children is dehydration or other causes of poor perfusion that may respond to restoration of fluid volume. Pyelonephritis and tubular destruction are not common causes of acute renal failure. Obstructive uropathy may cause acute renal failure, but it is not the most common cause.
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