A nurse in an emergency department is caring for an infant who has a 2-day history of vomiting and an elevated temperature.Which of the following should the nurse recognize as the most reliable indicator of fluid loss?

The correct answer is Choice C.Choice A rationaleBlood pressure is not the most reliable indicator of fluid loss in infants. Blood pressure can remain normal until dehydration is severe.Choice B rationaleRespiratory rate can be affected by many factors and is not the most reliable indicator of fluid loss.Choice C rationaleBody weight is the most reliable indicator of fluid loss in infants. A significant decrease in body weight indicates significant fluid loss and helps guide appropriate fluid replacement therapy.Choice D rationaleSkin integrity can be affected by many factors and is not the most reliable indicator of fluid loss.