Key Concepts
Introduction
Scenario setup A client post-op develops sudden dyspnea and pleuritic pain. SpO₂ 88% on 4 L, RR 34, HR 128, BP 108/70. Unequal breath sounds are noted on the right. The client is diaphoretic. Think pulmonary embolism, pneumothorax, aspiration, or acute pulmonary edema until evaluated—unequal breath sounds push toward pneumothorax or mainstem issues depending on stem. RN priorities: oxygen, monitoring, notify, prepare for diagnostics and interventions. RN traps: routine meds first, delayed provider notification, or ambulating unstable clients. 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.