Pediatric Vital Signs by Age

Pediatric vital signs differ profoundly from adult normals and change continuously with age. A nurse who applies adult vital sign standards to children will misinterpret normal findings as abnormal and, more dangerously, fail to recognize early signs of deterioration. For the REx-PN exam, vital sign questions test: (1) whether a given vital sign is normal for the child's age; (2) the correct temperature measurement method for the age; and (3) the blood pressure formula for estimating minimum normal systolic BP. These are frequently tested in scenarios where the candidate must decide whether a vital sign requires escalation. On the exam, writers often pair stable-sounding options with unstable data—notice 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...