A nurse is caring for multiple patients during a busy shift. Which patient should the nurse assess first?

The asthmatic patient with shortness of breath and O2 sat 88% requires first assessment due to acute respiratory compromise. Other patients have non-urgent needs (discharge teaching, mild headache, dialysis question).

Prioritization Using the ABC Framework

The nurse must apply the ABC (Airway, Breathing, Circulation) prioritization framework, a foundational principle for determining which patient requires immediate assessment. This framework directs the nurse to address life-threatening physiological needs before attending to stable or chronic conditions. The patient with asthma experiencing increased shortness of breath and an oxygen saturation of 88% on room air has a critical breathing compromise. This represents an acute deterioration in the "B" component of the ABCs, placing the patient at immediate risk for respiratory failure.

Pathophysiological Rationale for Acute Respiratory Distress

In an acute asthma exacerbation, bronchoconstriction, airway inflammation, and mucus plugging lead to severe ventilation-perfusion (V/Q) mismatch. An oxygen saturation of 88% indicates significant hypoxemia, reflecting a state where the lungs cannot effectively oxygenate the blood. This is a critical finding because prolonged hypoxemia leads to tissue hypoxia, metabolic acidosis, and ultimately, cardiac dysrhythmia or arrest. The concept of first-pass success in managing a failing airway or breathing, as highlighted in emergency intubation literature, underscores the urgency of early, effective intervention to prevent a cascade of complications . Delaying assessment risks progression to a state requiring emergent tracheal intubation, a procedure with inherent risks that increase with patient decompensation.

Applying Clinical Evidence to the Prioritization Decision

The immediate need for respiratory support is supported by evidence on managing acute respiratory failure. While the scoping review on non-invasive ventilation (NIV) focuses on a structured, protocol-driven approach for hypercapnic respiratory failure, the core principle is the timely recognition and treatment of respiratory distress to prevent further decline . The patient with an oxygen saturation of 88% is exhibiting a failure of basic oxygenation, the most fundamental step in the respiratory process. This patient’s need for immediate assessment and potential intervention, such as supplemental oxygen or bronchodilator therapy, supersedes the needs of the other patients. The patient with diabetes requiring discharge teaching (a psychosocial and knowledge need), the patient with hypertension and a mild headache (a comfort and chronic management need), and the patient with CKD who missed dialysis (a chronic management need with potential for future, but not immediate, life-threatening complications) are all clinically stable in this moment. The acute, life-threatening nature of the respiratory distress makes this patient the clear priority for the nurse's first assessment .