Pneumonia

The patient with pneumonia can deteriorate from stable to septic in hours. Knowing which assessment findings demand immediate action separates routine monitoring from lifesaving intervention.

Pneumonia is an infection of the lung parenchyma causing inflammation and alveolar consolidation with fluid or pus. Community-acquired (CAP) and hospital-acquired (HAP/VAP) types differ in likely pathogens and urgency. CAP often presents with sudden onset fever, productive cough with rust-colored or purulent sputum, pleuritic chest pain, and crackles on auscultation. HAP develops ≥48 hours after hospital admission and carries higher mortality because of drug-resistant organisms. Key assessment findings include tachypnea (often the earliest sign), SpO₂ decline, increased work of breathing, diminished or bronchial breath sounds over consolidated areas, and dullness to percussion. Elevated WBC (>11,000/mm³), positive sputum culture, and chest X-ray showing infiltrates support and confirm the diagnosis. Nursing priorities center on airway management: position the spontaneously breathing patient with the affected lung up (good lung down) to optimize V/Q matching, encourage incentive spirometry 10 times per hour while awake, administer prescribed antibiotics within one hour when sepsis criteria are met, monitor oxygen therapy to maintain SpO₂ ≥94%, and ensure adequate hydration (2–3 L/day unless fluid-restricted) to thin secretions.

Key Distinctions

Don't confuse pneumonia (crackles, dullness to percussion, consolidation on X-ray) with pleural effusion (absent breath sounds, shifting dullness, fluid layering on X-ray) — both cause dullness, but consolidation stays put. Students mix up rust-colored sputum (pneumococcal pneumonia) with blood-tinged/hemoptysis (TB or lung cancer). Elderly patients may present atypically — confusion and tachypnea without fever — so a normal temperature doesn't rule out pneumonia.

Clinical Pearl

Good lung down, bad lung up. Position the unaffected lung dependent to maximize gas exchange — gravity sends blood where ventilation is best.