Introduction
Scenario setup A 59-year-old describes tight band-like chest discomfort with shortness of breath since this morning. Vitals: BP 152/88 mmHg, HR 108/min, RR 24/min, SpO₂ 93% on room air. The client is pale and diaphoretic. You work in a community clinic setting. This presentation demands urgent medical evaluation for possible ACS. Canadian RPN items reward prompt collaboration, clear reporting, and safe interventions within scope—not independent diagnosis or prescribing. Traps include minimizing diaphoresis as “stress,” delaying escalation to finish vitals on another client, or unsupervised exertion (walking tests) during active symptoms. 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 REx-PN (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 , reread that line; ...