Key Concepts
Introduction
Scenario setup A client with AKI develops peaked T waves, K+ 7.1 mEq/L, HR irregular, BP 98/60. Monitor shows widening QRS. Instability + hyperkalemia requires rapid sequence care: cardiac membrane stabilization, shift K intracellularly, eliminate K (diuretics/dialysis) per orders, with glucose monitoring when insulin is used. RN traps: single interventions without monitoring, missing glucose checks with insulin, or delaying provider notification. 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 (United States), 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,...