What should the nurse do first when a preschool-age client is suspected of having ingested a toxic substance?

When a preschool-age client is suspected of having ingested a toxic substance, the first step the nurse should take is to assess the child's vital signs and neurological status. This assessment is crucial for determining the immediate safety and health of the child.

By evaluating vital signs (such as heart rate, respiratory rate, and blood pressure), the nurse can identify any signs of distress or instability that may require urgent medical intervention. Neurological status assessment is equally important, as it helps to ascertain if the child is experiencing any alterations in consciousness, motor functions, or reflexes, which could indicate the severity of the toxicity or the need for immediate life-saving measures.

Assessing the child's condition takes precedence because prompt recognition of any critical signs can shape the subsequent treatment plan, ensuring that the child receives the best possible care in a time-sensitive situation. While gathering information from the parents about the substance ingested and the onset of symptoms is also important, it comes after establishing the child's current health status to prioritize their safety and stabilize their condition.