Acute Bronchitis

Key Points

• Acute bronchitis is inflammation of the bronchi, most often caused by respiratory viruses.
• Typical presentation is persistent productive cough with rhonchi/wheezing and variable dyspnea/malaise.
• Diagnosis is primarily clinical, with selective testing when severity cues suggest complications.
• Nursing priorities are symptom relief, airway monitoring, fatigue reduction, and infection-spread prevention.

Pathophysiology

Acute bronchitis occurs when an infectious pathogen invades the respiratory tract and replicates in bronchial tissues. The host inflammatory response increases bronchial irritation and mucus production, producing cough and lower-airway symptom burden.

Some cases follow an upper-respiratory infection that extends into the lower respiratory tract. Noninfectious irritants such as smoke and pollution can also trigger bronchial inflammation.

Classification

• Viral acute bronchitis: Most common etiology (for example rhinovirus, influenza virus, adenovirus).
• Bacterial acute bronchitis: Less common; targeted treatment requires identified bacterial cause.
• Irritant-associated acute bronchitis: Triggered by smoke or pollution exposure.
• Risk-profile class: Tobacco use, high-pollution environments, crowded living conditions, and history of asthma/allergies increase risk.

Nursing Assessment

NCLEX Focus

Distinguish persistent lower-airway illness from short-lived URI and watch for early complication cues.

• Assess cough characteristics (productive, persistent, sputum color/amount) and duration trend.
• Recognize that cough commonly lasts about 10 to 20 days and can persist beyond 4 weeks.
• Monitor for dyspnea, rhonchi/wheezing, malaise, and chest-wall pain from prolonged forceful coughing.
• Differentiate from uncomplicated URI when symptoms do not resolve quickly and lower-airway findings persist.
• Monitor for complications such as pneumonia, acute-respiratory-distress-syndrome, respiratory-failure, and cough-related pneumothorax.
• Use focused severity cues for escalation: tachycardia, tachypnea, temperature above 100.4 degrees F, or concerning chest exam findings.
• Recognize egophony and fremitus changes as pneumonia-rule-out cues that often prompt chest imaging.

Nursing Interventions

• Prioritize supportive care and airway-patency monitoring.
• Administer prescribed oxygen support and trend respiratory status for deterioration.
• Encourage oral hydration and humidification to help loosen bronchial secretions.
• Position client upright with head of bed 30 degrees or higher to support lung expansion.
• Cluster care and provide rest periods to reduce fatigue from persistent cough.
• Administer ordered symptom therapies and reinforce age-appropriate nonpharmacologic cough strategies (for example warm fluids/honey/ginger/lozenges when appropriate).
• Reinforce medication safety for pediatric caregivers when using OTC cough/fever agents.
• Coordinate etiology-based therapy: antibiotics only for identified bacterial cause; antiviral use (for example oseltamivir) requires early initiation window for influenza benefit.
• Teach exposure reduction (smoke/allergens/pollution avoidance; mask use in high-irritant environments when prone to recurrent episodes).
• Teach reassessment trigger: symptoms persisting longer than about 6 weeks require reevaluation for alternate diagnosis or complications.
• Reinforce hand hygiene, respiratory etiquette, and vaccine adherence to reduce future infection burden.
• Reevaluate outcomes at each assessment/new diagnostic result/interdisciplinary update and revise the care plan if goals are unmet.

Complication Escalation

Persistent cough with worsening respiratory status, high fever, or new focal chest findings warrants urgent reassessment for lower-airway complications.

Pharmacology

Drug Class	Examples	Key Nursing Considerations
analgesics/antipyretics	Acetaminophen, ibuprofen	Fever/discomfort control; confirm age-appropriate dosing.
Antitussive/expectorant agents	Dextromethorphan, guaifenesin	Use only when age-appropriate and provider-guided in children.
bronchodilators	Albuterol (selected wheezing cases)	Used when bronchospasm/wheezing is present.
corticosteroids	Short-course steroid regimens (selected cases)	May be used briefly for inflammatory symptom burden when indicated.
antivirals	Oseltamivir (influenza-associated cases)	Most effective when started within 48 hours of symptom onset.
antibiotics	Pathogen-directed regimens	Not routine; reserve for confirmed/suspected bacterial etiology.

Clinical Judgment Application

Clinical Scenario

A child with 2 weeks of productive cough develops wheezing, fatigue, fever 100.8 degrees F, and persistent rhonchi.

• Recognize Cues: Persistent lower-airway cough syndrome with abnormal vitals and wheeze.
• Analyze Cues: Acute bronchitis remains likely, but pneumonia and other complications must be excluded.
• Prioritize Hypotheses: Immediate priorities are airway/oxygenation stability and complication screening.
• Generate Solutions: Intensify respiratory assessment, support hydration/positioning, and coordinate selective diagnostics.
• Take Action: Implement supportive interventions and escalate for provider-directed imaging/treatment decisions.
• Evaluate Outcomes: Respiratory effort and cough burden improve without complication progression.

Related Concepts

• upper-respiratory-tract-infection - Common antecedent illness and differential comparison.
• respiratory-viral-infections - Viral etiologies (including influenza/rhinovirus) that can precipitate acute bronchitis.
• thorax-and-lung-assessment-breath-sounds-and-respiratory-patterns - Focused assessment framework for wheeze/rhonchi and distress trends.
• pneumonia - Key complication to exclude when severity cues are present.
• pneumothorax - Rare forceful-cough complication requiring urgent recognition.

Self-Check

1. Which findings in acute bronchitis should trigger chest imaging for complication rule-out?
2. Why are antibiotics not routine first-line treatment in most acute bronchitis cases?
3. What caregiver teaching helps reduce recurrence and delayed complication detection?