A 3-year-old child is brought to the emergency department after ingesting an unknown amount of household bleach 30 minutes ago. The child is alert and crying, with no visible burns around the mouth. What is the nurse's priority action?

The priority is to assess ABCs (airway, breathing, circulation) to ensure immediate physiological stability, as bleach ingestion can cause rapid airway compromise. Other options are contraindicated for caustic substances.

Priority Action for Pediatric Toxic Ingestion

When a child presents with a known or suspected toxic ingestion, the foundational principle of emergency care is to evaluate and stabilize physiological function before addressing the specific poison. The Pediatric Assessment Triangle (PAT) provides a structured, rapid visual and auditory assessment framework that begins the moment the child is observed. It evaluates three critical domains: Appearance, Work of Breathing, and Circulation to the Skin. This tool is designed to support the early identification of critically ill children and guide immediate triage and management decisions ^[1]. In this scenario, although the child is described as alert and crying—which suggests a patent airway and adequate cerebral perfusion at this moment—the ingestion of a caustic substance like household bleach carries a high risk for rapid airway compromise from edema and aspiration. Therefore, the nurse's priority is to formally assess the physiological components represented by the PAT: the airway, breathing, and circulation (ABCs).

The other options represent contraindicated or secondary interventions. Inducing vomiting is strictly prohibited after ingestion of a caustic substance because it causes re-exposure of the esophageal and oropharyngeal mucosa to the corrosive agent, dramatically increasing the risk of perforation and further burns. Administering activated charcoal is ineffective for caustic ingestions; it does not bind to bleach and the black liquid obscures visualization of mucosal burns during subsequent endoscopy. Giving milk or other diluents is not a priority action and is generally not recommended outside of a specific poison control directive, as it may induce vomiting and does not halt the progression of tissue injury. The immediate application of the PAT framework directs the nurse to systematically confirm the integrity of the child's ABCs before any decontamination or dilution strategy is considered ^[1].