Aspiration Pneumonia

Key Points

• Aspiration pneumonia occurs when food, fluid, secretions, or emesis enters the trachea and respiratory tract, causing inflammation and infection.
• Key risk factors: dysphagia, altered level of consciousness, stroke, Parkinson’s disease, dementia, NG tubes, sedation.
• NPO until swallow screen by SLP or trained provider — no PO food, fluids, or medications before evaluation.
• Prevention: HOB ≥30° during meals and after, oral hygiene, thickened liquids, chin-tuck maneuver, feeding tube placement verification.
• CURB-65 score ≥4 → ICU admission recommended.

Pathophysiology

Normal swallowing directs food from the oral cavity into the esophagus. In aspiration, food, liquid, upper airway secretions, or emesis enters the trachea and lungs. Once lung tissue is exposed to the aspirated material, the alveolar-capillary membrane becomes inflamed, capillaries are damaged, and alveoli fill with fluid or pus — impairing gas exchange.

Risk Factors

Category	Specific Risk Factors
Neurological	Stroke, Parkinson’s disease, dementia, impaired gag reflex
Altered consciousness	Sedation, anesthesia, alcohol/drug intoxication
Swallowing dysfunction	Dysphagia from any cause
Mechanical	NG tube, endotracheal tube (VAP risk)
Geriatric	Weakened immune system, cognitive decline, muscle weakness
Other	Severe GERD, esophageal disorders, prolonged supine position

Older adults (>65) are 3× more likely to be hospitalized with pneumonia than the general population.

Nursing Assessment

NCLEX Focus

Any patient with dysphagia or altered LOC should be made NPO until a swallow evaluation is completed by an SLP. Respiratory rate and SpO₂ are the highest-priority assessment parameters. Altered mental status = urgent oxygen need.

Clinical Manifestations

• Cough — productive of yellow, green, brown, or blood-tinged sputum (bacterial); watery (viral)
• Dyspnea, tachypnea, accessory muscle use, nasal flaring
• Decreased SpO₂, diminished or crackle breath sounds on auscultation
• Fever, chills, fatigue, tachycardia
• Altered mental status (cerebral hypoxia) — urgent sign

Diagnostics

Test	Significance
Chest X-ray/CT	Whitish opacities (consolidation) at aspiration-prone sites (right lower lobe most common)
CBC	Elevated WBC (bacterial infection)
ABG	Low PaO₂ in severe cases; guides ventilation decisions
Sputum culture	Identifies organism; guides antibiotic selection
CRP/procalcitonin	Differentiates bacterial vs. viral pneumonia
Swallow screen	Identifies aspiration risk before initiating oral intake

CURB-65 Severity Score

Parameter	Score
Confusion	1
Uremia (BUN >20 mg/dL)	1
Respiratory rate ≥30/min	1
Blood pressure <90/60 mmHg	1
Age ≥65 years	1

• 0–1: Outpatient management
• 2–3: Hospital admission recommended
• 4–5: ICU admission recommended

Nursing Interventions

Priority: Swallow Evaluation First

• Place patient NPO immediately when aspiration is suspected
• No PO food, fluids, OR medications until an evidence-based swallow screen is completed by a trained provider or SLP
• Collaborate with SLP for formal dysphagia evaluation and diet modification orders

Prevention Strategies

1. Head-of-bed elevation ≥30° during meals and for at least 30 minutes after
2. Oral hygiene: toothbrushing, denture care, suction excess secretions, moisturize oral mucosa
3. Thickened liquids per SLP recommendation (nectar or honey consistency)
4. Chin-tuck maneuver — head tilts forward during swallowing to protect airway
5. Feeding tube safety: verify placement before each use; confirm position with X-ray
6. Slow-pace eating with upright positioning

Treatment

• Antibiotics per organism and severity (CAP vs. HAP/VAP antibiotic regimens)
• Supplemental oxygen; prepare for BiPAP or mechanical ventilation in severe cases
• Monitor SpO₂, respiratory rate, mental status continuously
• Use droplet/contact precautions as appropriate

Priority Escalation

Decreased SpO₂ + increased respiratory rate + labored breathing + altered mental status = immediate respiratory crisis. Escalate to provider, prepare for ventilatory support. Do not delay based on pending culture results.

Related Concepts

• dysphagia — Primary underlying condition predisposing patients to aspiration.
• evidence-based-respiratory-care — VAP bundle implementation in mechanically ventilated patients.
• nasogastric-tube-indications-and-safety — NG tube placement verification as aspiration prevention.
• respiratory-system — Normal swallowing mechanics and pulmonary physiology.
• postoperative-pacu-priorities-and-complication-surveillance — Aspiration risk in post-anesthesia recovery.

Self-Check

1. A patient with a history of stroke is about to receive oral medications. What is the nurse’s first action?
2. A patient with pneumonia has a CURB-65 score of 4. What level of care does this indicate?
3. List three evidence-based nursing interventions to prevent aspiration pneumonia.