Epiglottitis: Causes, Symptoms, Diagnosis, and Treatment

Epiglottitis is an acute inflammatory disorder of the upper airway that can rapidly become life-threatening. Swelling primarily affects the epiglottis and surrounding supraglottic tissues, which can progressively narrow the airway and interfere with breathing.

Although historically associated most strongly with children and Haemophilus influenzae type B, epiglottitis can affect both children and adults and may have several causes.

Because complete airway obstruction can develop quickly, early recognition, minimal disturbance, careful assessment, and appropriate airway management are the most important considerations when caring for a patient with suspected epiglottitis.

What Is Epiglottitis?

Epiglottitis is acute inflammation and swelling of the epiglottis and nearby structures located above the glottis. These structures form part of the entrance to the lower respiratory tract and normally help protect the airway during swallowing.

The primary danger of epiglottitis is not simply the presence of an infection. The more immediate concern is that inflammation can produce substantial supraglottic edema, progressively reducing the space available for airflow.

As the tissues become swollen, resistance to airflow increases. The patient must work harder to move air through the narrowed upper airway, and turbulent airflow may produce stridor.

In severe cases, swelling can progress to near-complete or complete upper-airway obstruction. This can occur rapidly, particularly in children, whose airways are naturally smaller.

For this reason, epiglottitis is considered an airway emergency. Diagnosis and treatment must always be approached with the understanding that agitation, repositioning, or unnecessary manipulation of the upper airway may worsen obstruction.

What Causes Epiglottitis?

Epiglottitis has historically been associated with bacterial infection, particularly Haemophilus influenzae type B, commonly abbreviated Hib. Before widespread Hib vaccination, the condition occurred much more frequently in young children. Vaccination dramatically reduced the incidence of classic Hib-associated pediatric epiglottitis.

The epidemiology has since changed. Pediatric cases have become less common, while adult cases represent a greater proportion of patients diagnosed with the condition.

Although Hib remains an important organism, other bacteria may also cause epiglottitis, including:

• Streptococcus pneumoniae
• Staphylococcus aureus
• Group A beta-hemolytic Streptococcus
• Other beta-hemolytic streptococci
• Klebsiella pneumoniae
• Haemophilus parainfluenzae

Note: Because several pathogens may be responsible, cultures can help identify the causative organism once the airway is secure.

Noninfectious Causes

Not every case of epiglottic inflammation is caused by infection. Thermal epiglottitis can occur when hot liquids or other heated substances injure the supraglottic tissues. The resulting burn can produce swelling similar to that seen with bacterial infection.

Traumatic inflammation may also occur after injury to the upper airway. Examples include repeated attempts at endotracheal intubation or traumatic manipulation while attempting to remove an airway foreign body.

Regardless of the cause, the clinical concern is the same. Swelling near the entrance of the airway can obstruct airflow and may progress rapidly.

Who Is Most Affected?

Classic pediatric epiglottitis has traditionally been associated with young children, often in the range of approximately 2 to 6 years of age. However, widespread Hib vaccination has altered this pattern considerably.

Children who develop epiglottitis today may be older than patients commonly seen before widespread immunization, and adults can also develop the disorder.

The incidence of epiglottitis among children has decreased substantially since Hib vaccination became routine. At the same time, clinicians must still recognize the condition because vaccination does not eliminate every possible cause.

Other bacteria can produce a similar inflammatory response, and noninfectious injury can also lead to dangerous supraglottic swelling.

How Epiglottitis Affects the Upper Airway

The epiglottis is a leaf-shaped structure located at the entrance of the larynx. During normal swallowing, it helps protect the lower respiratory tract from aspiration. In epiglottitis, the epiglottis and surrounding supraglottic tissues become inflamed and enlarged.

Structures that may be affected include the epiglottis, aryepiglottic folds, arytenoids, and other nearby tissues.

As swelling increases, the opening through which air travels becomes smaller. This produces an obstructed inspiratory breathing pattern because the patient has difficulty drawing air through the narrowed upper airway.

The patient may compensate by recruiting accessory muscles and changing body position to maximize airway patency.

If swelling continues, ventilation can become inadequate. A partially obstructed airway can progress to complete obstruction, which is why seemingly minor actions such as forcing the patient to lie down or attempting to inspect the throat may be dangerous.

Signs and Symptoms of Epiglottitis

Epiglottitis usually has an abrupt onset. A child may appear relatively well and then develop significant symptoms over only a few hours.

This rapid progression is one of the major differences between epiglottitis and croup. Several findings are particularly characteristic.

High Fever

Bacterial epiglottitis often causes a high fever. The child may appear acutely ill or toxic rather than simply experiencing the mild systemic symptoms associated with an uncomplicated viral upper respiratory infection.

A high fever combined with severe throat symptoms, drooling, and stridor should raise concern for epiglottitis.

Severe Sore Throat

A severe sore throat is another common finding. Older children may be able to describe significant throat pain directly, while younger children may demonstrate discomfort through behavior, refusal to eat, irritability, or an unwillingness to swallow.

The severity of the throat symptoms may appear disproportionate to what can safely be observed externally.

Difficulty Swallowing

Dysphagia, or difficulty swallowing, is strongly associated with epiglottitis. Inflammation and swelling around the supraglottic structures can make swallowing painful or mechanically difficult. The patient may therefore avoid swallowing whenever possible.

Drooling

Drooling is an especially important clinical clue. A child with significant dysphagia may stop swallowing oral secretions normally. Saliva then collects in the mouth and may visibly drain from the lips.

Drooling in a febrile child with stridor is particularly concerning because it suggests that upper-airway swelling is interfering with normal swallowing. This finding helps distinguish epiglottitis from croup, in which drooling is not a typical feature.

Muffled Voice

Epiglottitis may produce a muffled voice, sometimes described as a hot potato voice. The voice changes because swelling alters the normal movement of air and sound through the pharyngeal and laryngeal structures.

Hoarseness, which is commonly associated with croup, is generally less characteristic of epiglottitis.

Stridor

Stridor is a harsh respiratory sound produced by turbulent airflow through a narrowed upper airway. In epiglottitis, stridor generally occurs during inspiration because the obstruction involves the upper airway.

It may be relatively low-pitched or muffled compared with the loud, high-pitched stridor associated with croup. Stridor indicates significant airway narrowing and should always be evaluated in the context of the patient’s work of breathing, air movement, oxygenation, mental status, and general appearance.

Labored Breathing

As airway resistance increases, the patient must generate more effort to move air through the obstructed region.

Signs of increased work of breathing may include:

• Suprasternal retractions
• Intercostal retractions
• Substernal retractions
• Nasal flaring
• Accessory muscle use
• Dyspnea
• Visible respiratory distress

Note: Breath sounds may become diminished as the obstruction progresses because less air is moving through the airway.

Anxiety and Restlessness

Patients with epiglottitis often appear anxious or restless. This behavior may reflect air hunger, hypoxemia, discomfort, and the instinctive recognition that breathing has become difficult.

Agitation should be minimized whenever possible because increased activity and distress may worsen respiratory effort and airway obstruction.

Tripod Position and Preferred Positioning

One of the classic findings associated with epiglottitis is the tripod position. A child may sit upright, lean forward, extend the neck, and thrust the chin outward. This positioning is an attempt to maximize the diameter of the upper airway and make breathing easier.

Some children may strongly resist lying down. This behavior should be respected.

Forcing a patient with epiglottitis into the supine position can worsen airway obstruction. An enlarged epiglottis and swollen surrounding tissues may shift in a way that further compromises the opening of the airway.

A patient who is maintaining airway patency while sitting upright should therefore be allowed to remain in that position until the airway can be managed under controlled circumstances. The preferred position is not simply a comfort issue. It may be helping the patient maintain adequate ventilation.

Severe and Late Findings

Progressive epiglottitis can eventually overwhelm the patient’s ability to compensate. Late findings include cyanosis, lethargy, hypotonia, decreasing breath sounds, and altered consciousness.

These findings suggest that airflow, oxygenation, or ventilation is becoming critically impaired.

A child who initially appears extremely anxious and then becomes unusually quiet or less responsive may be deteriorating rather than improving. Diminished respiratory effort in this situation may indicate exhaustion.

Complete upper-airway obstruction can rapidly lead to respiratory arrest, so worsening respiratory status requires immediate preparation for definitive airway management.

How Is Epiglottitis Diagnosed?

Epiglottitis is primarily a clinical diagnosis. The combination of abrupt onset, high fever, severe sore throat, difficulty swallowing, drooling, muffled voice, stridor, and tripod positioning can strongly suggest the disorder.

The patient’s appearance is also important. A child with epiglottitis commonly looks significantly ill and anxious. The diagnostic approach must always be balanced against the risk of aggravating the airway.

Tests that would normally be considered routine may be inappropriate if they require excessive movement, agitation, or manipulation of the upper airway.

The Thumb Sign

When the patient is stable enough for imaging and radiography can be performed without compromising airway safety, a lateral neck radiograph may demonstrate the classic thumb sign. Normally, the epiglottis appears relatively thin.

In epiglottitis, inflammation produces substantial enlargement, giving the epiglottis a thickened, rounded appearance resembling a thumb.

Additional radiographic findings may include swelling of the aryepiglottic folds, supraglottic haziness, and loss of the normal vallecular space. The location of the swelling is important.

Epiglottitis primarily produces supraglottic swelling, whereas croup produces narrowing below the vocal cords in the subglottic region. Imaging can therefore support the diagnosis, but it should never take priority over maintaining a safe airway.

Why Direct Throat Examination Can Be Dangerous

One of the most important principles in suspected epiglottitis is to avoid unnecessary direct examination of the throat before the airway is secured. Attempting to depress the tongue and inspect the epiglottis can stimulate or traumatize the already inflamed upper-airway structures.

This manipulation may cause additional swelling or trigger abrupt airway obstruction. Even seemingly routine procedures can become dangerous if they upset a child who is relying on a particular position and breathing pattern to maintain airway patency.

For this reason, direct visualization should only be performed in a controlled setting by clinicians experienced in managing a difficult pediatric airway and capable of securing the airway immediately if obstruction occurs.

Note: The goal is not to obtain visual confirmation at any cost. The immediate priority is to preserve ventilation.

Other Diagnostic Testing

Laboratory studies may provide supportive information once they can be obtained safely. Because classic epiglottitis is a bacterial infection, the white blood cell count may be elevated and may demonstrate a left shift.

Blood cultures and cultures of upper-airway secretions may help identify the causative organism. However, obtaining these specimens should not delay airway control.

When a patient requires endotracheal intubation, cultures can be obtained after the airway is secured. Similarly, arterial blood gas analysis, intravenous access, or other procedures that may cause significant agitation should not take priority over preserving a threatened airway.

Epiglottitis vs. Croup

Epiglottitis and croup are both important causes of pediatric upper-airway obstruction, but their clinical presentations differ substantially.

Croup generally develops gradually following symptoms of a viral upper respiratory infection. Children often have a barking cough, hoarseness, and loud inspiratory stridor. Epiglottitis typically begins more abruptly and produces a much sicker appearance.

Characteristic findings that favor epiglottitis include:

• High fever
• Severe sore throat
• Drooling
• Dysphagia
• Muffled voice
• Minimal coughing
• Tripod positioning
• Acute toxic appearance

A barking cough strongly favors croup rather than epiglottitis. The location of inflammation also differs. Croup primarily causes subglottic swelling, producing the characteristic steeple sign on an anteroposterior neck radiograph.

Epiglottitis causes supraglottic swelling, producing the thumb sign on a lateral neck radiograph.

These differences are clinically important because management priorities are different. Croup is often treated with corticosteroids and nebulized epinephrine, whereas epiglottitis requires particular attention to minimizing airway disturbance and securing the airway when obstruction is significant.

Initial Management of Suspected Epiglottitis

The first priority is maintaining adequate ventilation while avoiding actions that could precipitate complete obstruction. The patient should be kept as calm as possible and allowed to remain in the preferred position.

A child sitting upright and leaning forward should not be forced to lie down. Unnecessary procedures should be postponed until airway safety has been established.

If supplemental oxygen is required, it should be administered in a way the child tolerates. Blow-by oxygen may be useful when placing a tight-fitting mask would increase agitation. Continuous respiratory and cardiac assessment is important.

Clinicians should closely monitor:

• Stridor
• Work of breathing
• Air movement
• Retractions
• Oxygen saturation
• Heart rate
• Skin color
• Level of consciousness

Note: Any progression toward decreased air movement, cyanosis, exhaustion, or altered mental status should prompt immediate escalation.

Endotracheal Intubation

When significant obstruction is present or deterioration appears likely, endotracheal intubation may be required to secure the airway. Whenever possible, intubation should occur under controlled conditions with clinicians experienced in managing difficult upper-airway obstruction.

An operating room or similarly prepared environment may be preferred because anesthesia, otolaryngology, respiratory therapy, and emergency airway resources can be immediately available.

The patient should not be unnecessarily repositioned before the airway is secured. Premature or poorly controlled attempts at intubation can worsen obstruction and may precipitate respiratory arrest.

General anesthesia or appropriate sedation may be used as part of a controlled airway approach. Because the upper airway is swollen, an endotracheal tube smaller than the size normally predicted for the patient’s age may be necessary. Once the tube passes beyond the area of obstruction, ventilation can improve dramatically.

Emergency Airway Management

If the patient progresses to respiratory arrest, immediate ventilatory support is required. Manual ventilation with 100% oxygen should be initiated while preparations for definitive airway placement are made.

Severe swelling can make intubation difficult. For this reason, clinicians capable of establishing an emergency surgical airway must be available when severe epiglottitis is managed.

If conventional endotracheal intubation cannot be accomplished and the airway cannot be maintained, an emergency tracheotomy or other surgical airway procedure may become necessary.

Tracheostomy is rarely required when controlled endotracheal intubation can be successfully performed, but surgical backup remains important because complete airway obstruction may make standard intubation impossible.

Antibiotic Therapy

Once airway security has been established, treatment of the underlying bacterial infection becomes a major priority. Broad-spectrum intravenous antibiotic therapy is generally initiated.

A cephalosporin such as ceftriaxone may be used, with therapy subsequently adjusted according to culture results and the patient’s clinical response. Treatment may continue for approximately 7 to 10 days depending on the organism, clinical course, and treatment plan.

Antibiotics are important because they eradicate the infection responsible for the inflammatory process. However, they do not immediately remove the mechanical obstruction caused by severe swelling. This is why airway management takes priority over administering antibiotics in a patient whose airway is actively threatened.

Corticosteroids and Other Supportive Treatment

Corticosteroids may be administered in an effort to decrease inflammation and upper-airway edema. Their role is directed toward reducing tissue swelling rather than treating the bacterial infection itself.

Supportive measures may also include fever control, hydration, oxygen therapy when necessary, and continuous cardiopulmonary monitoring.

Sedation requires careful consideration. Mild sedation may reduce severe anxiety in selected patients, but excessive sedation before airway control could reduce protective reflexes or impair spontaneous ventilation.

Once an artificial airway is secure, sedation may be used more readily when needed to prevent agitation and accidental tube removal.

Care After Intubation

Airway management remains important after successful endotracheal intubation. The upper-airway tissues may remain markedly swollen even though the tube is providing an open pathway for ventilation.

Accidental extubation during this period can be extremely dangerous because the patient may immediately return to severe airway obstruction. The endotracheal tube therefore must be carefully secured. Adequate sedation may be used to reduce the risk of inadvertent tube removal, and restraints may be considered when necessary to protect the airway.

If sedation significantly depresses spontaneous ventilation, mechanical ventilation may be required. The patient should also continue receiving appropriate antibiotics and supportive therapy while airway edema resolves.

Determining Readiness for Extubation

Patients with epiglottitis are typically intubated only until the swelling has improved sufficiently to allow safe spontaneous breathing. This may occur within approximately 12 to 48 hours in many infectious cases, although the time varies according to severity and cause.

Thermal or traumatic injuries may require a longer period of airway support. One method of evaluating improvement is assessing for an air leak around the endotracheal tube. When the tissues surrounding the tube are severely swollen, little or no air may pass around it.

As the swelling decreases, an audible or measurable leak may develop. An air leak at relatively low airway pressure can therefore suggest improvement in upper-airway edema. However, an air leak does not guarantee that extubation will be successful.

It provides supportive information but cannot reliably prove that the patient will maintain an adequate airway after tube removal. Direct assessment of the epiglottis with laryngoscopy or bronchoscopy may occasionally be performed under controlled conditions before extubation.

Monitoring After Extubation

Close observation should continue after the endotracheal tube has been removed. Recurrent swelling or residual airway narrowing can cause stridor and respiratory distress.

Patients may therefore be monitored for approximately 12 to 24 hours following extubation, depending on their clinical condition.

The healthcare team should watch for renewed stridor, increasing work of breathing, retractions, oxygen desaturation, or other evidence of upper-airway obstruction. The absence of immediate distress after extubation does not completely eliminate the possibility of recurrent symptoms.

Why Minimal Disturbance Matters

A major principle throughout the management of epiglottitis is minimal disturbance. A frightened child with significant supraglottic swelling may be maintaining ventilation through a delicate combination of positioning, muscle activity, and respiratory effort.

Actions that increase anxiety can raise oxygen consumption and increase respiratory effort. Repositioning can alter the relationship between swollen upper-airway structures and further reduce airway diameter.

Throat examination can directly stimulate the inflamed tissues. Procedures such as blood draws, intravenous insertion, or radiographic positioning can also create distress. None of these interventions are inherently inappropriate. The issue is timing.

Note: When the airway is unstable, diagnostic and routine procedures should be delayed until they can be performed safely.

Recognizing Impending Airway Failure

Early recognition of deterioration can prevent progression to complete obstruction. Important warning signs include worsening stridor, increasing retractions, diminished air movement, cyanosis, severe anxiety, exhaustion, lethargy, and decreasing consciousness.

A decrease in audible stridor is not necessarily reassuring if air movement is also decreasing. Stridor requires airflow to generate sound. If obstruction becomes so severe that very little air is moving, respiratory noise may actually become less prominent.

The clinician must therefore assess the patient’s entire respiratory status rather than relying on the loudness of stridor. A child who is becoming cyanotic, lethargic, or hypotonic is showing late evidence of severe compromise and requires immediate airway intervention.

Prognosis

When epiglottitis is recognized promptly and the airway is protected appropriately, patients can recover rapidly with antibiotic therapy and supportive treatment. In infectious cases, fever and systemic toxicity may begin to improve within a relatively short period after effective antimicrobial therapy is started.

Upper-airway swelling also decreases, eventually allowing removal of the artificial airway. The major threat occurs before and during airway stabilization.

Because complete obstruction can develop unexpectedly, delays in recognition or inappropriate airway manipulation can have serious consequences.

Modern vaccination has made classic pediatric Hib epiglottitis much less common, but the condition has not disappeared. Clinicians must remain able to recognize its characteristic presentation and respond appropriately when it occurs.

Epiglottitis Practice Questions

1. What is epiglottitis?
Epiglottitis is an acute inflammatory condition involving the epiglottis and surrounding supraglottic tissues that can rapidly cause severe upper-airway obstruction.

2. Why is epiglottitis considered a medical emergency?
Epiglottitis is a medical emergency because swelling of the supraglottic tissues can rapidly progress to complete upper-airway obstruction.

3. Which part of the airway is primarily affected by epiglottitis?
Epiglottitis primarily affects the supraglottic region, including the epiglottis and surrounding tissues above the glottis.

4. Which organism has historically been the most common cause of pediatric epiglottitis?
Haemophilus influenzae type B, or Hib, has historically been the most common cause of pediatric epiglottitis.

5. How has Hib vaccination affected the incidence of pediatric epiglottitis?
Widespread Hib vaccination has substantially decreased the incidence of classic Hib-associated epiglottitis in children.

6. Which other bacterial organisms can cause epiglottitis?
Other causes include Streptococcus pneumoniae, Staphylococcus aureus, group A Streptococcus, Klebsiella pneumoniae, Haemophilus parainfluenzae, and other beta-hemolytic streptococci.

7. How does epiglottitis typically begin?
Epiglottitis typically has an abrupt onset, with significant symptoms developing over only a few hours.

8. What are common clinical manifestations of epiglottitis?
Common manifestations include high fever, severe sore throat, difficulty swallowing, drooling, muffled voice, inspiratory stridor, and labored breathing.

9. Why does drooling commonly occur in epiglottitis?
Drooling occurs because swelling and throat pain make swallowing difficult, causing the patient to stop swallowing oral secretions normally.

10. What does dysphagia mean in a patient with epiglottitis?
Dysphagia means difficulty swallowing and is caused by inflammation and swelling of the supraglottic structures.

11. How is the voice commonly affected in epiglottitis?
The voice may become muffled, sometimes described as a hot potato voice.

12. What type of respiratory sound is commonly associated with epiglottitis?
Inspiratory stridor is commonly associated with epiglottitis because airflow becomes turbulent as it passes through the narrowed upper airway.

13. What does stridor indicate in a patient with epiglottitis?
Stridor indicates significant upper-airway narrowing and should raise concern for progressive airway obstruction.

14. What is the tripod position?
The tripod position occurs when the patient sits upright and leans forward, often with the chin thrust forward, to help maximize upper-airway patency.

15. Why should a child with suspected epiglottitis not be forced to lie supine?
Lying supine may worsen upper-airway obstruction, so the child should be allowed to remain in the position that makes breathing easiest.

16. What is the classic radiographic sign associated with epiglottitis?
The classic radiographic finding is the thumb sign on a lateral neck radiograph.

17. What causes the thumb sign in epiglottitis?
The thumb sign results from enlargement and swelling of the epiglottis, giving it a thick, rounded appearance.

18. What additional structures may become swollen in epiglottitis?
The aryepiglottic folds and arytenoid tissues may become swollen along with the epiglottis.

19. Why should routine direct throat examination be avoided in suspected epiglottitis?
Manipulation of the tongue or inflamed upper airway can worsen swelling and potentially precipitate complete airway obstruction.

20. When should direct visualization of the airway be performed in suspected epiglottitis?
Direct visualization should be performed only in a controlled environment by experienced personnel prepared to manage an emergency airway.

21. What is the first priority in the management of severe epiglottitis?
The first priority is maintaining and securing a patent airway before focusing on diagnostic testing or treatment of the underlying infection.

22. Why should unnecessary procedures be minimized before the airway is secured?
Procedures that cause agitation or repositioning may increase respiratory distress and potentially worsen upper-airway obstruction.

23. Where is controlled endotracheal intubation ideally performed in a child with severe epiglottitis?
Controlled intubation is ideally performed in a prepared environment such as an operating room with experienced airway personnel and emergency backup available.

24. Why may a smaller-than-usual endotracheal tube be needed in epiglottitis?
A smaller tube may be necessary because swelling of the supraglottic tissues reduces the available space for airway instrumentation.

25. When should bacterial cultures be obtained in a patient whose airway is threatened by epiglottitis?
Bacterial cultures should be obtained after the airway has been secured so that diagnostic testing does not delay or compromise airway protection.

26. How has the epidemiology of epiglottitis changed over time?
The incidence of epiglottitis has decreased substantially in children, while adults now account for a greater proportion of cases.

27. Can epiglottitis occur from causes other than infection?
Yes. Epiglottitis can also result from thermal injury or trauma to the upper airway.

28. What is thermal epiglottitis?
Thermal epiglottitis is inflammation and swelling of the epiglottis caused by exposure to very hot liquids or other heated substances.

29. How can traumatic epiglottitis develop?
Traumatic epiglottitis can develop after repeated intubation attempts or other traumatic manipulation of the upper airway.

30. How does a child with epiglottitis typically appear?
A child with epiglottitis typically appears acutely ill, anxious, and in significant respiratory distress.

31. Which retractions may occur as epiglottitis becomes more severe?
Suprasternal, substernal, and intercostal retractions may occur as the patient works harder to breathe through the narrowed upper airway.

32. Why may breath sounds become diminished in severe epiglottitis?
Breath sounds may become diminished because severe upper-airway obstruction allows less air to move into and out of the lungs.

33. What are concerning late signs of epiglottitis?
Cyanosis, lethargy, hypotonia, diminished air movement, and a decreasing level of consciousness are concerning late signs of severe airway compromise.

34. Why can a sudden decrease in anxiety be concerning in a child with epiglottitis?
A previously anxious child who becomes quiet or lethargic may be developing respiratory exhaustion rather than improving.

35. What laboratory finding may support a bacterial cause of epiglottitis?
An elevated white blood cell count with a left shift may support the presence of a bacterial infection.

36. Why should diagnostic imaging never delay airway management in epiglottitis?
The airway can deteriorate rapidly, so protecting ventilation takes priority over obtaining confirmatory radiographic findings.

37. What should accompany a patient with suspected epiglottitis during transport?
Personnel skilled in emergency airway management and intubation should accompany the patient because sudden airway deterioration may occur.

38. What type of oxygen delivery may be useful for an anxious child with epiglottitis?
Blow-by oxygen may be used when the child needs supplemental oxygen but does not tolerate a mask.

39. What should be done if respiratory arrest occurs in a patient with epiglottitis?
Manual ventilation with 100% oxygen should be initiated while immediate assistance for definitive airway management is obtained.

40. What intubation technique may be used under controlled conditions for severe epiglottitis?
Fiberoptic-assisted nasotracheal intubation may be used under controlled conditions by experienced personnel.

41. What is indicated if endotracheal intubation fails and the airway cannot be maintained?
An emergency surgical airway, such as a cricothyroidotomy or tracheotomy, may be required.

42. What type of medication is used to treat infectious epiglottitis after the airway is stabilized?
Broad-spectrum antibiotic therapy is used to treat the underlying bacterial infection.

43. Which antibiotic has been described as a treatment option for epiglottitis?
Ceftriaxone, a cephalosporin antibiotic, has been described as a treatment option for bacterial epiglottitis.

44. How long may antibiotic therapy be continued for epiglottitis?
Antibiotic therapy may continue for approximately 7 to 10 days, depending on the organism, clinical response, and treatment plan.

45. What is the potential role of corticosteroids in epiglottitis?
Corticosteroids may be used to help reduce inflammation and upper-airway edema.

46. Why must the endotracheal tube be carefully protected after intubation?
Accidental extubation could immediately expose the patient to the still-swollen upper airway and cause severe obstruction.

47. Why may sedation be used after the airway has been secured?
Sedation may help prevent agitation and inadvertent removal of the endotracheal tube while the airway remains swollen.

48. What may an air leak around the endotracheal tube suggest?
An air leak may suggest that upper-airway swelling has decreased and that more space is present around the tube.

49. Does the presence of an air leak guarantee successful extubation?
No. An air leak may indicate reduced edema, but it does not reliably prove that the patient will maintain an adequate airway after extubation.

50. Why should a patient be monitored closely after extubation for epiglottitis?
Close monitoring is necessary because stridor, respiratory distress, or recurrent upper-airway obstruction may develop after the tube is removed.

51. What age range is classically associated with pediatric epiglottitis?
Pediatric epiglottitis has traditionally been associated with children approximately 2 to 6 years of age.

52. How quickly can symptoms of classic epiglottitis develop?
Symptoms may develop abruptly over approximately 2 to 4 hours.

53. How did widespread Hib vaccination affect the incidence of epiglottitis in children?
Widespread Hib vaccination reduced the incidence of classic pediatric epiglottitis by more than 95%.

54. What type of cough is typically absent in epiglottitis?
The characteristic barking cough associated with croup is typically absent in epiglottitis.

55. How does coughing in epiglottitis generally compare with coughing in croup?
Coughing is usually minimal in epiglottitis, whereas croup commonly produces a prominent barking cough.

56. How does hoarseness help distinguish croup from epiglottitis?
Hoarseness is characteristic of croup but is generally absent in epiglottitis, which is more likely to produce a muffled voice.

57. How does the typical fever pattern differ between epiglottitis and croup?
Epiglottitis commonly causes a high fever, whereas croup is more often associated with a low-grade or variable fever.

58. How does the onset of epiglottitis differ from the onset of croup?
Epiglottitis usually develops abruptly over a few hours, whereas croup typically progresses gradually over one or more days.

59. What is the key anatomic difference between epiglottitis and croup?
Epiglottitis causes supraglottic swelling, whereas croup primarily causes subglottic swelling below the vocal cords.

60. Which radiographic sign is associated with croup rather than epiglottitis?
The steeple sign is associated with croup and reflects subglottic airway narrowing.

61. What may happen to the vallecula on a lateral neck radiograph in epiglottitis?
The vallecula may become obscured or no longer visible because of surrounding supraglottic swelling.

62. What does supraglottic haziness on a lateral neck radiograph suggest?
Supraglottic haziness suggests swelling and inflammation above the glottis, which is consistent with epiglottitis.

63. Why should a child with suspected epiglottitis remain in the position of comfort?
The child’s preferred position may help maintain airway patency, and unnecessary repositioning can worsen obstruction.

64. What position is commonly associated with a child attempting to maintain the airway in epiglottitis?
The child may sit upright with the neck extended and chin thrust forward to improve airflow through the narrowed upper airway.

65. Why can agitation be dangerous in a child with epiglottitis?
Agitation can increase respiratory effort and may worsen an already unstable upper-airway obstruction.

66. Why should venipuncture sometimes be delayed in suspected epiglottitis?
Venipuncture may cause agitation, so it may be postponed until the airway is secure if the procedure could worsen respiratory distress.

67. Why may intravenous access be delayed before airway stabilization?
Establishing intravenous access can upset or agitate the child and should not take priority over protecting a threatened airway.

68. Why is arterial blood gas sampling generally not a first priority in suspected epiglottitis?
ABG sampling may cause unnecessary distress and does not take priority over immediate assessment and protection of the airway.

69. What oxygen saturation target has been described when supplemental oxygen is required?
Supplemental oxygen may be used to maintain an SpO₂ greater than 90%.

70. What happens to airflow resistance as the supraglottic tissues become increasingly swollen?
Airflow resistance increases as the airway opening becomes progressively narrower.

71. Why may accessory muscles be recruited in epiglottitis?
Accessory muscles may be recruited because the patient must generate additional inspiratory effort to move air through the narrowed upper airway.

72. What does cyanosis indicate in a patient with severe epiglottitis?
Cyanosis indicates inadequate oxygenation and is a late warning sign of severe respiratory compromise.

73. Why is decreased air movement particularly concerning in epiglottitis?
Decreased air movement may indicate that the airway has become so narrow that very little gas is passing through it.

74. How long may the endotracheal tube remain in place in many cases of infectious epiglottitis?
The endotracheal tube may remain in place for approximately 12 to 48 hours while the supraglottic swelling resolves.

75. How long may a patient be observed after extubation for epiglottitis?
The patient may be closely observed for approximately 12 to 24 hours after extubation for recurrent stridor or respiratory distress.

76. How may epiglottitis present differently in adults compared with children?
Adults may have less specific symptoms than children, and the clinical picture may be complicated by other coexisting diseases.

77. Why is a child’s Hib immunization status relevant when evaluating suspected epiglottitis?
Hib vaccination has greatly reduced classic pediatric epiglottitis, so immunization status provides useful information when considering the possible cause.

78. How high may the fever become in severe pediatric epiglottitis?
The fever may reach approximately 40°C, or 104°F.

79. What type of stridor may be heard in epiglottitis compared with croup?
Epiglottitis may produce lower-pitched, more muffled inspiratory stridor compared with the louder, higher-pitched stridor of croup.

80. How may the respiratory rate change with severe upper-airway obstruction from epiglottitis?
The respiratory rate may remain normal or become somewhat slower as inspiratory obstruction becomes more severe.

81. How may the inspiratory time change in upper-airway obstruction caused by epiglottitis?
Inspiratory time may become equal to or longer than expiratory time because the patient has difficulty drawing air through the narrowed upper airway.

82. How may tidal volume be affected by epiglottitis?
Tidal volume may vary depending on the severity of the obstruction and the patient’s ability to compensate.

83. What is the sniffing position in epiglottitis?
The sniffing position refers to sitting upright with the chin thrust forward and the neck extended in an attempt to improve airway patency.

84. Why should intubation not be attempted prematurely in a child with epiglottitis?
A poorly timed or uncontrolled intubation attempt can worsen airway obstruction and potentially precipitate respiratory arrest.

85. Why is general anesthesia often used for controlled intubation in severe pediatric epiglottitis?
General anesthesia allows the airway to be managed in a controlled setting with experienced personnel and emergency backup immediately available.

86. What response is often seen once an endotracheal tube successfully bypasses the obstruction?
Respiratory distress may improve dramatically once the tube provides a secure pathway for airflow beyond the swollen supraglottic tissues.

87. Why may mechanical ventilation be required after intubation for epiglottitis?
Mechanical ventilation may be needed if heavy sedation depresses spontaneous breathing or if the patient cannot maintain adequate ventilation independently.

88. What may be used to prevent accidental self-extubation after the airway is secured?
Continuous sedation, close supervision, and restraints when necessary may be used to prevent accidental removal of the endotracheal tube.

89. At approximately what airway pressure may an air leak be assessed when considering extubation?
An air leak around the endotracheal tube may be assessed at approximately 20 cm H₂O as evidence that airway swelling has decreased.

90. What other clinical improvement may support readiness for extubation?
A reduction in fever and overall clinical toxicity may support consideration of extubation as the infection and swelling improve.

91. Why might laryngoscopy or bronchoscopy be performed before extubation?
These procedures may be used under controlled conditions to confirm that the epiglottis and surrounding tissues have decreased sufficiently in size.

92. Why may traumatic epiglottitis require a longer period of airway support?
Traumatic injury may produce swelling that resolves more slowly than infectious inflammation, sometimes requiring several additional days before extubation.

93. What rare infection has been associated with primary streptococcal epiglottitis in children?
Varicella has been described as a rare preceding illness associated with streptococcal epiglottitis.

94. How may the onset of streptococcal epiglottitis differ from classic bacterial epiglottitis?
Streptococcal epiglottitis may have a longer prodrome lasting more than 24 hours rather than developing as abruptly.

95. How can a blind finger sweep contribute to epiglottitis?
A blind finger sweep can traumatize the supraglottic tissues and lead to traumatic inflammation and swelling of the epiglottis.

96. What can happen if the tongue is manipulated or pulled in a child with severe epiglottitis?
Tongue manipulation may worsen swelling of the inflamed epiglottis and can precipitate sudden complete upper-airway obstruction.

97. What role may nebulized racemic epinephrine have in severe upper-airway stridor associated with epiglottitis?
Nebulized racemic epinephrine may be used in an attempt to reduce upper-airway swelling, but failure to improve generally indicates the need for a secure airway.

98. What short-course antibiotic regimen has been described as effective for infectious epiglottitis?
A 2-day course of ceftriaxone has been described as being as effective as a 5-day course of chloramphenicol in the referenced treatment approach.

99. When may blood and epiglottic cultures be collected during airway management?
Blood and epiglottic cultures may be collected during or after controlled intubation once the airway has been secured.

100. What is the role of an antipyretic in the management of epiglottitis?
An antipyretic may be used to reduce fever and improve comfort while definitive airway management and treatment of the underlying infection are provided.

Final Thoughts

Epiglottitis is an acute supraglottic inflammatory disorder that can rapidly progress from partial airway narrowing to complete obstruction. Typical findings include abrupt onset, high fever, severe sore throat, dysphagia, drooling, muffled voice, inspiratory stridor, respiratory distress, and tripod positioning.

The thumb sign may support the diagnosis when imaging can be obtained safely. Management centers on keeping the patient calm, avoiding unnecessary throat manipulation or repositioning, closely monitoring respiratory status, and securing the airway under controlled conditions when needed.

Once airway stability is established, antibiotics, supportive treatment, and careful monitoring can address the underlying infection and allow the inflammation to resolve.