ABCs Framework for Prioritization
Overview
The ABCs (Airway, Breathing, Circulation) are a sequential decision-making hierarchy, not a checklist. Ask: Is the airway patent? If yes, move to breathing. Is breathing adequate? If yes, move to circulation. The first unmet need in the sequence is the highest priority. ABCs are the default NCLEX prioritization tool unless the stem specifies another context. They sequence the order of nursing actions, both when choosing between clients and when ordering interventions for a single client — not medical diagnosis.
Sequence
Work the sequence top-down: the most life-threatening deficit at the highest letter wins. A patent-airway problem always outranks a breathing problem, which outranks a circulation problem — no skipping ahead.
ABC(DE) priority sequence
- AirwayPatency — stridor, gurgling, choking, inability to speak
- BreathingOxygenation/ventilation — distress, low SpO2, absent breath sounds
- CirculationPerfusion — hemorrhage, hypotension, no pulse, shock
- DisabilityNeuro/LOC — declining GCS, new confusion
- ExposureFull assessment — skin, temperature, hidden injury
Interpretation
How to apply the hierarchy when prioritizing.
Cpr Exception
The one place the order flips.
Vs Maslow
Pick the right framework for the stem.
Intervene and call for help immediately — do not delay to gather more data.
Clinical Pearl
Airway beats breathing beats circulation — the patient who can't protect their airway is always seen first (CAB only in CPR).