What early clinical signs indicate impending respiratory failure in a patient with pneumonia, and what nursing actions should be taken?

• A. Worsening tachypnea, tachycardia, use of accessory muscles, changes in mental status, falling SpO2.
• B. Worsening tachypnea, tachycardia, use of accessory muscles, mental status changes, falling SpO2; nursing actions: administer oxygen, escalate to rapid response/ICU, monitor closely, prepare for possible intubation.
• C. Discharge home with a cough.
• D. No change.

Answer: (B)

Recognizing impending respiratory failure in pneumonia comes from noticing a pattern of rising work of breathing and worsening oxygenation. Tachypnea and tachycardia show the body's attempt to compensate for hypoxia and increasing ventilatory demand, while the use of accessory muscles indicates substantial effort to breathe. Mental status changes reflect reduced oxygen delivery to the brain, a warning sign that gas exchange is deteriorating, and a falling SpO2 confirms that oxygenation is slipping. When these signs appear, the nurse should act to stabilize the patient quickly: administer oxygen to reach the prescribed target, monitor the patient continuously, and escalate per protocol—calling rapid response or transferring to ICU as needed. Be prepared for advanced airway management if the situation worsens, keeping airway equipment ready (bag‑valve‑mask, suction), securing IV access, and obtaining ABGs as ordered. Notify the physician and respiratory therapy promptly, optimize positioning to improve ventilation, and continue close, frequent reassessment. Discharging home or seeing no change would ignore these warning signals and delay life‑saving interventions.