Key Concepts
Overview and exam relevance
The Pediatric Triangle Assessment (PAT) was developed as part of the Pediatric Emergency Education Program (PEPP) as a structured rapid pre-hands-on assessment that can be completed from across the room in 30โ60 seconds. It allows immediate categorical assessment of a child's physiological status to guide urgency and prioritization before any vital sign measurement or physical examination. For the REx-PN exam, PAT questions test understanding of the three components, what each component assesses, and how the combination of findings guides the clinical category (the eight PAT patterns). On the exam, writers often pair stable-sounding options with unstable dataโnotice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are classic trap answers even when the clinical topic is familiar. Run a 60-second scan: breathing work and oxygenation, perfusion and end organs, neuro baseline, likely infection sources, and devices that can fail quietly. When two answers feel partly right, pick the one that reduces imminent harm and matches orders for the role you were given. Train yourself to state the primary risk in one...