A nurse is assessing a school-age child who has moderate dehydration due to diarrhea and vomiting. Which of the following manifestations should the nurse expect?

A. Decreased respirations: Moderate dehydration typically does not cause respiratory depression. Respiratory changes are more commonly associated with severe acid-base imbalances or advanced dehydration. B. Polyuria: Dehydration leads to decreased fluid volume, which generally results in oliguria (reduced urine output) rather than polyuria. Increased urination is not an expected finding in moderate dehydration. C. Bradycardia: Dehydration usually causes a compensatory increase in heart rate (tachycardia) to maintain cardiac output. Bradycardia is not typical unless there is a severe or underlying cardiac issue. D. Orthostatic hypotension: Loss of fluid volume from diarrhea and vomiting can decrease circulating blood volume, leading to a drop in blood pressure upon standing. This is an expected cardiovascular manifestation of moderate dehydration in school-age children.