Epiglottitis: Nursing Study Guide

Epiglottitis is a rapidly progressive, life-threatening bacterial infection of the epiglottis that can obstruct a child's airway within hours. This note covers the pathophysiology, hallmark signs (the 4 D's), emergency management priorities, and the key differences from croup — all essential for safe pediatric nursing care.

Definition

• Epiglottitis is a life-threatening bacterial infection of the epiglottis and surrounding supraglottic structures.
• It causes rapid, progressive airway obstruction and is a medical emergency — complete obstruction can occur within hours.

Pathophysiology

• Bacterial infection triggers inflammation and edema of the epiglottis and supraglottic tissues; the epiglottis becomes swollen and cherry-red.
• Edema narrows the airway, and the swollen epiglottis can occlude it — especially on inspiration.
• Progression is rapid; complete obstruction may develop within hours of symptom onset.
• Haemophilus influenzae type B (Hib) was historically the most common cause; widespread vaccination has made epiglottitis rare. Other causes include Streptococcus pneumoniae, Group A Streptococcus, and Staphylococcus aureus.

Risk Factors

• Unvaccinated children — highest risk group.
• Age 2–6 years — most common presentation.
• Immunodeficiency, including sickle cell disease, asplenia, or HIV.

Clinical Manifestations — The 4 D's

The classic signs of epiglottitis are the 4 D's:

• Drooling — painful swallowing means the child cannot swallow saliva.
• Dysphagia — difficulty swallowing; the child refuses to eat or drink.
• Dysphonia — muffled, thick "hot potato" voice.
• Dyspnea — increased work of breathing, possible stridor.

Other key features:

• Rapid onset — symptoms progress within hours.
• High fever, often >39°C (102.2°F).
• Tripod position — child sits leaning forward, neck extended, chin thrust out to open the airway.
• Refuses to lie down — supine positioning worsens obstruction.
• Stridor — a late sign of significant airway compromise.
• Cyanosis — a late sign of severe hypoxemia and impending respiratory arrest.

Diagnosis

• Diagnosis is clinical — do not delay treatment for tests.
• Lateral neck X-ray may show the classic "thumbprint sign" (swollen epiglottis).
• Blood cultures are obtained after the airway is secured.
• Do NOT examine the throat — this can trigger complete airway obstruction.
• Do NOT send the child to radiology alone — respiratory arrest can occur at any time.

Epiglottitis vs. Croup

• Epiglottitis: bacterial, rapid onset, muffled voice, drooling, tripod position.
• Croup: viral, gradual onset, barking cough, hoarseness.

Management

• Airway management is the priority — secure the airway immediately.
• Do not examine the throat or leave the child unattended.
• Prepare for intubation in the OR or ICU with emergency airway equipment ready.
• Intubation is performed by the most experienced provider; a smaller endotracheal tube may be needed.
• Oxygen therapy during preparation — maintain SpO₂ >90%.
• IV antibiotics after the airway is secured — ceftriaxone or cefotaxime is first-line.
• Corticosteroids may be used to reduce airway edema.
• Extubation is typically performed after 24–48 hours of antibiotics, once swelling has resolved.

Nursing Interventions

• Maintain a calm environment — agitation worsens obstruction. Keep the parent present if calming to the child.
• Do not place the child supine — allow the tripod position of comfort.
• Monitor respiratory status continuously — watch for increased stridor, retractions, or cyanosis.
• Have intubation equipment at the bedside at all times.
• Administer medications (IV antibiotics, corticosteroids) once the airway is secure.

Complications and Prevention

• Airway obstruction is the most serious complication — can lead to respiratory arrest.
• Pneumonia and sepsis are possible complications.
• Hib vaccine is the most effective prevention — given at 2, 4, 6, and 12–15 months of age.
• Rifampin prophylaxis is recommended for close contacts of a child with Hib epiglottitis.

Exam Traps

• Do not examine the throat in suspected epiglottitis.
• Do not send the child to radiology alone — medical staff must accompany.
• Do not position the child supine — allow tripod positioning.
• Do not confuse epiglottitis (4 D's) with croup (barking cough).
• Remember: the Hib vaccine has made epiglottitis rare, but it still occurs in unvaccinated children.

Key takeaways

• Epiglottitis is a bacterial airway emergency — complete obstruction can develop in hours.
• Recognize the 4 D's: Drooling, Dysphagia, Dysphonia (muffled "hot potato" voice), and Dyspnea — plus tripod positioning and high fever.
• Do not examine the throat, do not lay the child flat, do not leave them alone.
• Priority is securing the airway in a controlled setting (OR/ICU) before starting IV ceftriaxone or cefotaxime.
• The Hib vaccine (2, 4, 6, 12–15 months) is the key preventive measure; unvaccinated children remain at highest risk.
• Distinguish from croup: viral, gradual onset, barking cough, hoarse voice, able to lie flat.