Infection control — PN scope is a clinically significant topic that nurses encounter across acute care, community, and critical care settings. This lesson explores the chain of infection, providing the clinical depth needed to recognize, assess, and manage this condition at the bedside. Mastery requires understanding the underlying pathophysiology, early recognition of deterioration, and evidence-based nursing priorities aligned with NCLEX/REx-PN competency standards. 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 were given. Train yourself to state the primary risk in one short phrase before you read the options so distractors do not rewrite your priority list. On the exam, writers often pair stable-sounding options with...