Key Concepts
Introduction
Scenario setup A client with HF on diuretics becomes confused with seizure-like activity. Na+ 118 mmol/L (acute change implied). Severe hyponatremia can cause neurogenic catastrophe. Priorities: protect airway, monitor neuro, notify, prepare for carefully paced correction per orders—avoid rapid overcorrection themes when tested. Traps: free water bolus in inappropriate contexts, ignoring neuro changes. This case-study format is intentional: boards reward trajectory thinking—what changed, what is unstable, and what you do next for the role named in the stem. For NCLEX-RN (Canada), read the assignment line before you eliminate answers. Slow read: re-scan the stem for vitals trends, oxygen settings, allergies, and time since onset—case items often hide the decisive clue in a single line. 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...