Introduction
Scenario setup BG 28 mmol/L, ketones positive, bicarbonate low, K+ 5.4 mmol/L. Client vomiting, dehydrated, Kussmaul breathing. Classic DKA presentation. Priorities align with resuscitation, insulin therapy, and electrolyte safety—with Canadian metric labs in mind. Traps: routine tasks over monitoring, missing K trends. 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 feel partly right, pick the one that and...