Which is the most appropriate initial nursing diagnosis for a patient with community-acquired pneumonia and hypoxemia?

• A. Impaired gas exchange related to alveolar-capillary membrane involvement, evidenced by low SpO2 and tachypnea.
• B. Ineffective airway clearance.
• C. Acute pain.
• D. Risk for falls.

Answer: (A)

In pneumonia with hypoxemia, the most urgent problem is impaired gas exchange due to involvement of the alveolar-capillary membrane. Inflammation and exudate from the infection fill the alveoli and disrupt diffusion of oxygen into the blood, so the body shows signs like a low SpO2 and rapid breathing. That’s why the initial nursing diagnosis centers on gas exchange—it directly reflects the patient’s current physiologic crisis and points to immediate actions to improve oxygen delivery.

This diagnosis guides essential early nursing actions: monitor oxygen saturation closely, administer supplemental oxygen as ordered, position the patient to optimize ventilation (for example, elevating the head of the bed to improve chest expansion and reduce work of breathing), and assess ongoing for signs of respiratory distress. While airway clearance and safety concerns like pain or fall risk are important, they are secondary to the pressing need to correct inadequate oxygenation.