Epiglottitis is a medical emergency that requires immediate airway management due to the risk of rapid and potentially life-threatening airway obstruction. Proper anesthesia management is critical in ensuring that the airway is secured safely while minimizing further complications from airway manipulation. The primary goals in anesthetic management for epiglottitis are to maintain the patient’s oxygenation, ensure spontaneous breathing during induction, avoid airway trauma, and provide a secure airway through intubation or, in rare cases, tracheostomy.
Preoperative Considerations
In cases of suspected epiglottitis, airway management should be conducted in a controlled environment, such as the operating room (OR), with all necessary equipment and personnel available. Since airway obstruction can occur suddenly, it is crucial to avoid unnecessary agitation or delay in securing the airway. Premedication, whether oral or intravenous, should be avoided due to the risk of airway obstruction and the inability of patients to swallow medications. Any route of administration, such as oral or intramuscular, may increase anxiety or agitation, further compromising the airway. Maintaining a calm environment is essential, as agitation can worsen symptoms and hasten airway obstruction. The patient should be kept in a comfortable position, typically sitting upright, as this optimizes airway patency and minimizes respiratory distress.
The OR must be fully equipped with pediatric difficult airway tools, including different sizes of endotracheal tubes (ETTs), video laryngoscopes, fiberoptic scopes, stylets, and bougies. Additionally, emergency tracheostomy equipment should be readily available, and the presence of an experienced otolaryngologist (ENT surgeon) is crucial for rigid bronchoscopy or performing an emergency tracheostomy if intubation fails.
Induction of Anesthesia
Inducing anesthesia in a patient with epiglottitis requires a carefully managed approach to avoid airway collapse and ensure spontaneous ventilation is maintained until the airway is secured.
The patient should remain in a sitting position throughout induction to keep the airway open and minimize respiratory effort. Any attempt to lie the patient down could worsen airway obstruction. Slow inhalational induction with 100% oxygen is preferred to maintain spontaneous respiration. This method allows gradual deepening of anesthesia while maintaining the patient's ability to breathe on their own, avoiding the risk of airway collapse before securing the airway. Sevoflurane is commonly used due to its rapid onset and ability to be titrated smoothly.
Once the patient is anesthetized, standard monitors, including pulse oximetry, non-invasive blood pressure, and end-tidal CO2, should be applied. After sufficient anesthesia depth is achieved, an intravenous (IV) line can be inserted for further medications such as sedation or muscle relaxants, if required. Muscle relaxants should be avoided during the initial stages of induction to prevent airway collapse. If muscle relaxation is needed for intubation, it should be administered only after the airway is fully secured.
Airway Management
The process of securing the airway in patients with epiglottitis requires an experienced clinician to minimize the risk of airway trauma and subsequent obstruction. Laryngoscopy should only be attempted once the patient is in a deep plane of anesthesia to prevent reflexive airway closure. Video laryngoscopy or flexible fiberoptic intubation is preferred to minimize airway manipulation and trauma. Direct laryngoscopy may reveal the classic “cherry red” swollen epiglottis, indicating severe inflammation.
The most experienced anesthetist should perform endotracheal intubation. Due to swelling, smaller ETT sizes should be prepared. Intubation should be confirmed with capnography to ensure proper tube placement. Once intubated, cultures should be obtained from the airway to identify the causative organism. If intubation fails, an emergency tracheostomy should be performed by the ENT surgeon. This is considered a last-resort measure and should be available as a backup in all cases of epiglottitis.
| Step | Approach |
|---|---|
| Location | Controlled environment, typically the operating room, with all equipment and personnel present |
| Premedication | Avoided — patients cannot swallow oral medication, and any route risks added anxiety or agitation |
| Position | Sitting upright, including throughout induction; lying the patient down can worsen obstruction |
| Induction | Slow inhalational induction with 100% oxygen, commonly sevoflurane, preserving spontaneous respiration |
| Monitors and access | Pulse oximetry, non-invasive blood pressure, end-tidal CO2; IV placed once anesthetized |
| Muscle relaxants | Withheld during induction; given only after the airway is fully secured |
| Laryngoscopy | Only at a deep plane of anesthesia; video laryngoscopy or flexible fiberoptic preferred to limit trauma; may show a "cherry red" epiglottis |
| Intubation | Performed by the most experienced anesthetist, with smaller endotracheal tube sizes prepared; confirmed by capnography, then airway cultures obtained |
| Rescue plan | ENT surgeon present for rigid bronchoscopy or emergency tracheostomy if intubation fails |
Post-Intubation Care
Once the airway is secured, the focus shifts to ongoing airway protection and managing the underlying infection. IV sedation should be administered to maintain comfort and prevent movement that could dislodge the endotracheal tube. Humidified oxygen should be provided to keep the airway moist and facilitate easier breathing.
Empiric antibiotic therapy is initiated immediately, typically covering common respiratory pathogens such as Haemophilus influenzae, Streptococcus pneumoniae, and Staphylococcus aureus. Third-generation cephalosporins like ceftriaxone or cefotaxime are frequently used. Additionally, corticosteroids, such as dexamethasone, are administered to reduce airway edema. Nebulized racemic epinephrine can also be given to reduce airway swelling further. Patients are typically intubated for 24-48 hours, depending on the severity of edema and the response to treatment. Daily assessments are required to determine if the airway edema has subsided enough to consider extubation.
Extubation Considerations
Before extubation, it is essential to ensure that the airway edema has sufficiently resolved. A cuff leak test is performed by deflating the cuff of the endotracheal tube and observing for an audible leak of air around the tube. This indicates that the swelling has decreased enough to allow air to pass around the tube without obstruction. Direct visualization through flexible fiberoptic laryngoscopy may be performed to confirm the resolution of edema in the supraglottic structures.
Extubation should only be performed in a controlled setting with immediate access to reintubation equipment in case the airway edema recurs or the patient experiences respiratory distress post-extubation. The anesthetic management of epiglottitis requires a coordinated, cautious approach, with airway management being the top priority. Securing the airway in a controlled environment is critical to prevent airway collapse and ensure patient safety.
