What is an expected finding in a child with acute glomerulonephritis?

In a child with acute glomerulonephritis, the presence of proteinuria is an expected finding. This condition is characterized by inflammation of the glomeruli, which are the tiny filters in the kidneys. When the glomeruli are damaged, they can allow proteins, particularly albumin, to leak into the urine, leading to proteinuria.

This protein loss can be significant, and it may also result in other symptoms associated with nephrotic syndrome, such as edema and possibly hypertension due to fluid retention. The detection of protein in urine is a key indicator that assists in diagnosing and understanding the severity of acute glomerulonephritis, making it a critical finding in this context.

Other choices, such as a low urine specific gravity, urinary incontinence, and hypotension, do not represent typical findings associated with this condition, as they would suggest different pathophysiological processes.