Identify and Prioritize Hypotheses on NGN Cases
NGN cases typically present multiple plausible problems. Identifying several is not enough — the test asks you to prioritize.
The prioritization frameworks
Stack them in this order:
- ABC: airway, breathing, circulation — fundamental to life.
- Acute over chronic: a new change outweighs a stable chronic condition.
- Unstable over stable: monitor anyone whose status might change.
- Maslow's hierarchy: physiologic before psychosocial.
- Safety: anything threatening harm to self or others first.
- Patient over system: patient needs outweigh provider convenience.
Example
Stem presents: stable COPD, stable CHF, new confusion in a post-op patient.
- Most urgent: new confusion (acute change, possible delirium, possible hypoxia, possible sepsis) above chronic COPD management.
- Then: stable CHF (chronic).
- Then: stable COPD (chronic).
NGN application
"Prioritize hypotheses" items ask: among the candidate explanations, which is most urgent? The framework answers: whichever corresponds to a new, threatening, or unstable clinical change.
Pitfalls
- Confusing "stable problem" with "low importance" — stable means not changing now, still important.
- Prioritizing a chronic problem because it's familiar.
- Missing a worsening chronic problem (CHF with new dyspnea) — stable is not always stable.
Practice
On case stems, sort the presented problems by the framework before reading the option list. Then match your ranking to the options.
Practice with detailed rationales, study plans, and performance feedback.
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