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Physiological Adaptation4 D's — airway EMERGENCY

EpiglottitisNCLEX cheat sheet

Epiglottitis is a rapidly progressing bacterial infection causing severe inflammation of the epiglottis that can completely obstruct the airway.

25 key facts 2 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Causes

  • H. influenzae type B (Hib)
  • Sudden onset, looks toxic

Signs

  • 4 D's: Drooling, Dysphagia, Dysphonia, Distress
  • Tripod position, high fever
  • Muffled voice, NO cough

Avoid

  • NEVER inspect throat / tongue blade
  • No supine, keep upright

Do

  • Keep calm → 100% O2 ready
  • Intubation tray at bedside
  • IV abx, prevent w/ Hib vaccine
Red flag to remember

Never use a tongue depressor or throat swab or take an oral temperature; airway spasm and total obstruction can result.

Before you read

Test yourself first: 2 questions

Question 1 of 2

A 2-year-old is brought to the emergency department with a barking, seal-like cough and inspiratory stridor that worsened at night. The nurse recognizes these findings as characteristic of which condition?

What is epiglottitis?

It was classically caused by Haemophilus influenzae type B (Hib) and is now rarer due to the Hib vaccine. It is a true airway emergency presenting with the classic tripod position and the 4 D's: drooling, dysphagia, dysphonia, and distressed inspiratory effort.

Epiglottitis illustrated

Croup narrows the airway below the vocal cords; epiglottitis swells the epiglottis over the airway
Croup narrows the airway below the vocal cords; epiglottitis swells the epiglottis over the airway. Illustration: CinnaRN.

Key points to remember

  • Onset is abrupt with high fever, sore throat, and a toxic, ill appearance.
  • The child sits upright in a tripod position, leaning forward with chin out and tongue protruding to keep the airway open.
  • Drooling occurs because the child cannot swallow secretions due to painful dysphagia.
  • The voice is muffled or absent and there is no spontaneous cough (unlike croup).
  • Inspiratory stridor and severe respiratory distress develop quickly.
  • The epiglottis appears cherry-red and swollen.

Common causes

  • H. influenzae type B (Hib)
  • Sudden onset, looks toxic

Signs & symptoms

  • 4 D's: Drooling, Dysphagia, Dysphonia, Distress
  • Tripod position, high fever
  • Muffled voice, NO cough

Nursing priorities

  1. Keep the child calm, upright, and with the parent; do not force them to lie down.
  2. Do NOT inspect the throat or insert anything into the mouth, as this can trigger complete obstruction.
  3. Prepare for emergency intubation or tracheostomy and keep airway equipment at the bedside.
  4. Administer humidified oxygen, IV antibiotics, and corticosteroids as ordered once the airway is secured.
  5. Notify the provider and stay with the child continuously; have the child accompanied to any imaging.

Labs & values

Oxygen saturation: normal95-100%
WBC: normal5,000-10,000/mm3, often elevated with bacterial infection
95100% Normal

Patient teaching

  • Ensure children complete the Hib vaccine series to prevent epiglottitis.
  • Seek emergency care immediately for sudden high fever with drooling, muffled voice, and difficulty breathing.
  • After recovery, complete the full course of prescribed antibiotics.

Red flags: report now

  • Never use a tongue depressor or throat swab or take an oral temperature; airway spasm and total obstruction can result.
  • Drooling, tripod positioning, muffled voice, and stridor together signal imminent airway loss.
  • Any sudden agitation, cyanosis, or decreasing responsiveness requires immediate airway intervention.
  • Do not leave the child alone or delay calling the rapid response or anesthesia team.

References

Clinical references for this topic

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