ABC Priority Framework Mnemonic
The ABC mnemonic represents the universal priority framework used in nursing: Airway, Breathing, Circulation. Derived from emergency medicine triage principles, ABCs guide nurses in determining which patient to see first, which assessment finding is most critical, and which intervention takes priority. This is the most frequently tested prioritization concept on the NCLEX.
The Mnemonic
"ABC"
Breakdown
Airway
Airway is always the top priority. A compromised airway leads to death within minutes. Assess for obstruction, stridor, gurgling, absence of air movement, and swelling. Interventions include suctioning, head-tilt chin-lift, jaw thrust, and insertion of an oral or nasal airway.
Breathing
After ensuring a patent airway, assess breathing effectiveness. Evaluate respiratory rate, depth, pattern, oxygen saturation, breath sounds, and use of accessory muscles. Interventions include supplemental oxygen, positioning (high Fowler's for dyspnea), and assisting with ventilation.
Circulation
After airway and breathing are secured, assess circulatory status. Evaluate heart rate, blood pressure, skin color, capillary refill, peripheral pulses, and signs of bleeding or shock. Interventions include IV access, fluid resuscitation, hemorrhage control, and CPR if pulseless.
Clinical Relevance
On the NCLEX, prioritization questions frequently ask which patient to see first or which finding requires immediate attention. Apply ABCs: the patient with an airway problem is always the priority over a breathing problem, which is always the priority over a circulation problem. This framework overrides Maslow's hierarchy because physiological survival depends on this exact order.
Study Tips
- ✓On the NCLEX, if one patient has an airway issue and another has a cardiac issue, always see the airway patient first.
- ✓Remember that ABCs come before pain management, emotional needs, and education in priority questions.
- ✓Choking, laryngeal edema, and post-thyroidectomy swelling are all airway-priority emergencies.
- ✓After ABCs, move to D (disability/neuro status) and E (exposure/environment) for a complete primary survey.
FAQs
Common questions about this mnemonic
ABCs always apply for prioritization, but mental health questions may prioritize safety (risk of self-harm or harm to others) above ABCs. If a question describes a patient who is actively suicidal with a plan and means, that patient takes priority even over a patient with a stable airway concern. However, a true airway emergency always takes precedence.
ABCs are a subset of Maslow's physiological needs (the base of the pyramid). On the NCLEX, physiological needs come first, followed by safety, then love/belonging, esteem, and self-actualization. Within physiological needs, ABCs provide the specific order: airway before breathing before circulation before nutrition, elimination, and other physiological functions.