ABC Prioritization for NCLEX-PN

Airway and breathing before paperwork

NCLEX-PN prioritization items often list four plausible nursing actions—only one addresses the immediate physiologic threat. MedlinePlus describes breathing difficulty as a signal that oxygenation or ventilation is failing; airway obstruction, anaphylaxis, and pulmonary edema demand intervention before completing routine assessments on stable patients.¹

A patient speaking in single words with SpO₂ 82% needs oxygen and positioning before blood glucose on a diabetic patient in the next room with stable vitals. Partial airway compromise from tongue swelling trumps IV antibiotic timing for a patient with cellulitis without fever. When airway is secure, move to breathing effort and circulation—treat chest pain with hypotension as perfusion failure, not anxiety.

Circulation and stable versus unstable

Vital signs contextualize ABC decisions: tachycardia with hypotension and cool skin signals shock requiring fluid resuscitation or hemorrhage control notification before routine toileting assistance.² Stable hypertension without symptoms does not outrank a patient with new chest pain and diaphoresis.

When all patients appear stable, use secondary frameworks—acute change, expected complications, and time-sensitive treatments. ABC still applies: a postoperative patient with sudden shortness of breath may need assessment for pulmonary embolism or hemorrhage before pain medication for another patient’s chronic osteoarthritis.