In the case of suspected severe dehydration in a pediatric patient, what is the first measure you should take?

In cases of suspected severe dehydration in pediatric patients, the administration of intravenous fluids is crucial because severe dehydration can lead to significant physiological disturbances. Intravenous fluids allow for rapid restoration of fluid balance and blood volume, which is vital for maintaining adequate circulation and preventing complications such as shock. This is particularly important in children, as their smaller body size and higher metabolic rates make them more vulnerable to the effects of dehydration.

When dehydration is suspected to be severe, the child's condition may not be stable enough to tolerate oral rehydration solutions, which might be the intended approach in milder cases. Additionally, while measuring serum electrolytes and monitoring input and output are valuable steps in the overall management of dehydration, they do not address the immediate need for fluid resuscitation. Delaying the administration of intravenous fluids when severe dehydration is present can result in deterioration of the patient’s condition. Thus, immediate fluid replacement through intravenous administration is the best first step in this scenario.