Acute epiglottitis in the tropics: is it an adult disease?

Airway management of adult epiglottitis: a systematic review and meta-analysis

Background

Adult epiglottitis is a life-threatening airway emergency where airway protection is the immediate priority. Despite its importance, the optimal approach to airway management remains unclear. We performed a systematic review of the airway management for adult epiglottitis, including meta-analysis of trends over time.

Methods

We systematically searched PubMed, Ovid MEDLINE®, and Embase® for adult epiglottitis studies that described the airway management between 1980 and 2020. The primary outcome was the prevalence of airway intervention. Secondary outcomes were prevalence of tracheal intubation, tracheostomy, and failed intubation. A random-effects model meta-analysis was performed with subgroups defined by decade of study publication. Cases that described the specific method of airway intervention and severity of epiglottitis were included in a separate technique summary.

Results

Fifty-six studies with 10 630 patients were included in the meta-analysis. The overall rate of airway intervention was 15.6% (95% confidence interval [CI] 12.9-18.8%) but the rate decreased from 20% to 10% between 1980 and 2020. The overall rate of tracheal intubation was 10.2% (95% CI 7.1-13.6%) and that of failed intubation was 4.2% (95% CI 1.4-8.0%). The airway technique summary included 128 cases, of which 75 (58.6%) were performed awake and 53 (41.4%) involved general anaesthesia. We identified 32 cases of primary technique failure.

Conclusion

The rate of airway intervention for adult epiglottitis has decreased over four decades to a current level of 10%. Tracheal intubation is a high-risk scenario with a 1 in 25 failure rate. Specific technique selection is most likely influenced by contextual factors including the severity of epiglottitis.

Epiglottitis in Patients With Preexisting Autoimmune Diseases: A Nationwide Case-Control Study in Taiwan

OBJECTIVES

The role of autoimmune diseases on the risk for acute epiglottitis remains uncertain. This study aimed to delineate the association between epiglottitis and autoimmune diseases using population database.

METHODS

A population-based retrospective study was conducted to analyze claims data from Taiwan National Health Insurance Research Database collected over January, 2000, to December, 2013.

RESULTS

In total, 2339 patients with epiglottitis were matched with 9356 controls without epiglottitis by sex, age, socioeconomic status, and urbanization level. The correlation between autoimmune diseases and epiglottitis was analyzed by multivariate logistic regression. Compared with controls, patients with epiglottitis were much more likely to have preexisting Sjögren syndrome (adjusted odds ratio [aOR]: 2.37; 95% CI: 1.14-4.91; P = .021). In addition, polyautoimmunity was associated with increased risk of epiglottitis (aOR: 2.08; 95% CI: 1.14-3.80; P = .018), particularly in those aged >50 years (aOR: 2.61; 95% CI: 1.21-5.66; P = .015).

CONCLUSIONS

Among autoimmune diseases, we verify the association between epiglottitis and Sjögren syndrome in Taiwan. Furthermore, we present the novel discovery that patients with epiglottitis have an increased risk of polyautoimmunity, particularly those aged >50 years.

Association Between Systemic Corticosteroid Use and Mortality in Patients with Epiglottitis

OBJECTIVES

To clarify whether treatment with systemic corticosteroids at a certain dose was associated with better outcomes in patients with epiglottitis requiring airway management (tracheotomy or airway intubation).

METHODS

This was a retrospective cohort study on patients hospitalized for epiglottitis requiring airway management from a nationwide inpatient database (between July 2010 and March 2019). Patients treated with systemic corticosteroids equivalent to methylprednisolone ≥40 mg/d within 2 days of admission and patients who were not treated with corticosteroids within 2 days of admission were compared after inverse probability of treatment weighting using covariate balancing propensity score. The primary outcome was all-cause 30-day in-hospital mortality, and secondary outcomes included all-cause 7-day in-hospital mortality, length of hospital stay, and total medical cost.

RESULTS

There were 1986 and 1771 patients in the corticosteroid and control groups, respectively. A total of 72 of 3757 (1.9%) patients died within 30 days of admission, including 17 of 1986 (0.9%) patients in the corticosteroid group and 55 of 1771 (3.1%) in the control group (weighted odds ratio, 0.28 [95% confidence interval, 0.11-0.70]; weighted risk difference, -2.2% [-3.2% to -1.3%]). Treatment with corticosteroids was associated with lower total medical costs (weighted median, $6,187 vs. $6,587; weighted difference, $-1,123 [-2,238 to -8]) but not all-cause 7-day in-hospital mortality (weighted odds ratio, 0.63 [0.22-1.82]; weighted risk difference, -0.3% [-0.9 to 0.2]) and length of hospital stay (weighted median, 13 vs. 13 days; weighted difference, -0.2 days [-2.1 to 1.8]).

CONCLUSIONS

Systemic corticosteroids may be beneficial to patients with epiglottitis requiring airway management.

LEVEL OF EVIDENCE

3 Laryngoscope, 133:344-349, 2023.

Adult Acute Epiglottitis: Predictors for Airway Intervention and Intensive Care Unit Admission

Objectives

(1) to characterise the clinical features of acute epiglottitis in adults in Hong Kong; (2) to identify predictors for airway intervention and uneventful recovery without intensive care unit (ICU) admission. Modified Early Warning Score (MEWS) was also applied in risk stratification.

Methods

A retrospective cohort study of 122 consecutive laryngoscopically confirmed cases admitted to Pamela Youde Nethersole Eastern Hospital from 1998 to 2007.

Results

The mean patient age was 51 years (range 18–84 years) and the male-to-female ratio was 1.9 to 1. Sore throat, dysphagia and odynophagia were the commonest symptoms and the median MEWS on presentation was 1 (range 0–10). Nine patients (7.4%) required airway intervention (5 orotracheal intubations, 2 nasotracheal intubations and 2 tracheostomies) and one patient died. Univariate analysis showed that recurrent attack (OR 35.0, 95% CI 2.77–442.69, p=0.013), dyspnoea (OR 17.41, 95%CI 2.09–144.79, p=0.001), stridor (OR 30.0, 95%CI 2.42–372.65, p=0.016) and MEWS equal to or greater than 4 (OR 5.81. 95%CI 1.16–29.17, p=0.049) were significantly associated with airway intervention. Only stridor remained a reliable predictor in multivariate analysis (OR 88.46, 95%CI 5.48–1427.45, p=0.001). Performance of MEWS in prediction for airway intervention was evaluated with the Receiver Operating Characteristic (ROC) curve. The area under curve (AUC) was 0.71 (95%CI 0.503–0.909). Forty-five patients did not require ICU admission (36.9%). Multiple logistic regression showed that absence of hoarseness (OR 3.10, 95%CI 1.10–8.79, p=0.033), absence of fever (OR 3.2, 95%CI 1.25–8.16, p=0.015) and MEWS <1 (OR 7.07, 95%CI 1.31–38.07, p=0.023) were predictors of uneventful recovery without ICU care.

Conclusion

A selective approach should be adopted in airway management but those with stridor on presentation should have their airway secured without delay. MEWS cannot replace clinical judgement but a low MEWS on presentation may help in identifying low risk patients who can be managed safely without ICU admission.

Pediatric Tracheotomies in an Asian Population: The Singapore Experience

Objective:

Over the past 2 decades, tracheotomy in children and infants has evolved from a primarily emergent procedure for upper airway obstruction into a semielective procedure for airway access in assisted ventilation. We present a 12-year retrospective review of tracheotomies performed in the pediatric population in Singapore.

Study Design and Setting:

We reviewed all tracheotomies performed in children below the age of 16 years in 2 tertiary pediatric medical centers in Singapore from January 1991 to December 2003. Indications for surgery are reviewed, and outcomes in terms of morbidity rate, mortality rate, postoperative rehabilitation, and duration of decannulation process were analyzed.

Results:

Tracheotomies were performed in 48 children during the study period. The mean age of patients was 3.24 years, with ages ranging from 16 days to 14 years. Sixty-three percent of tracheotomies were done within the 1st year of life. The chief indication was airway access for assisted ventilation. The overall complication rate was 31%. There were 13 attempts at decannulation, with 9 successes. No tracheotomy-related deaths occurred.

Conclusion:

Tracheotomy is a relatively safe procedure in children and infants. Lower decannulation rates and the evolving role of tracheotomy for early access in assisted ventilation permits earlier discharge with tracheotomy in situ.

Infectious and Noninfectious Causes of Epiglottitis in Adults, Review of 24 Patients

Objective

The present study reports the etiological differences, clinical features, management, and patient outcomes between infectious and noninfectious causes of epiglottitis in adult patients.

Methods

The medical records of 24 patients with infectious and noninfectious epiglottitis were investigated. Diagnosis was made by anamnesis and endoscopic examination. On admission, respiratory distress of patients was classified according to Freidman's classification.

Results

Fifteen patients were male, and nine patients were female. Their ages ranged between 24 and 69 years of age (mean, 43.4±11.6). In total, 16 patients were diagnosed with infectious epiglottitis, and eight patients were diagnosed with noninfectious epiglottitis. Of patients with noninfectious epiglottitis, two had angioedema, two had experienced organophosphate ingestion, one had experienced hot water aspiration, one had experienced hot milk aspiration, one had experienced foreign body aspiration (fishbone), and one had epiglottitis due to Behçet's disease. Sore throat was the most common symptoms of infectious and noninfectious epiglottitis in our patients. Odynophagia was the second most common symptom of infectious epiglottitis, and muffled voice was the second most common symptom in noninfectious patients.

Conclusion

Epiglottit is an emergency situation; when a patient is diagnosed with epiglottitis, close follow-up should be performed, and airway support should properly be maintained according to the degree of respiratory distress. Tracheostomy should be performed without hesitation, as needed.

Acute epiglottitis: Trends, diagnosis and management

Acute epiglottitis is a life-threatening disorder with serious implications to the anesthesiologist because of the potential for laryngospasm and irrevocable loss of the airway. Acute epiglottitis can occur at any age. Early diagnosis with careful and rapid intervention of this serious condition is necessary in order to avoid life-threatening complications.

Acute supraglottitis in adults: what's the optimal airway intervention?

OBJECTIVES

To validate the Friedman stage and define the proper timing for airway intervention in adult cases of acute supraglottitis, we evaluated the clinical courses and management of adult patients.

METHODS

202 adult patients with acute supraglottitis were included in this study. The diagnosis of supraglottitis was established by flexible nasolaryngoscopic examination. Friedman stages were classified in each patient. In this study, the first three days of serial nasolaryngoscopic findings for each patient were evaluated.

RESULTS

All patients were treated successfully with only conservative methods. There were no significant differences between patients with Friedman stages I or II/III. Among the patients that had serial nasolaryngoscopic findings, only one patient presented with progressive swelling of the epiglottis, and there were no cases of persistent swelling.

CONCLUSION

The airway intervention threshold should be raised from Friedman stages II-III. And, airway intervention should not be needed if patients are tolerant of their respiratory discomfort.

Acute epiglottitis: a retrospective review of 47 patients in Kuwait

OBJECTIVES

Acute epiglottitis is a potentially life threatening condition which can lead to fatal airway obstruction in previously healthy individuals. The present study was undertaken to assess the clinical features, management and patient outcomes of epiglottitis in Kuwait over an eight year period.

DESIGN

Case series.

SETTING

Al Sabah Hospital, Kuwait.

METHODS

All patients admitted to the ENT department of Al Sabah hospital between January 2000 and January 2008 with the diagnosis of acute epiglottitis were included in this retrospective study. The diagnosis of acute epiglottitis was established by visualization of inflamed epiglottis either on indirect laryngoscopy or flexible fibreoptic/direct laryngoscopy.

RESULTS

47 cases were identified, 5 children and 42 adults. There were 32 males and 15 females, in the age range of 5 to 66 years. Peak incidence was in the third decade. 31 patients had co-morbid conditions, 18 patients (38.2%) had diabetes, 8 patients (17%) had hypertension and 3 patients (6.3%) had dental caries. Majority of the patients (89.3%) presented with sore throat as their chief complaint. All patients were febrile on presentation. The classical "thumb sign" on lateral neck radiograph was seen in 32 patients (68%). Blood cultures were collected from 22 patients (46.8%), all were negative. Ceftriaxone was the commonest empirical antibiotic prescribed. 7 patients required airway intervention (5 with endotracheal intubation and 2 with tracheostomy). There were no deaths in our study.

CONCLUSION

In Kuwait, acute epiglottis is commoner in adults than in children. It is imperative to secure the airway and to start the patients on broad spectrum antibiotics and steroids as early as possible. In general, the prognosis is good with antimicrobial therapy, close monitoring and selective airway intervention, in the form of intubation / tracheostomy, for patients with stridor or shortness of breath.

Acute epiglottitis in adults - a recent review in an Indian hospital

OBJECTIVES

To examine the mode of presentation, clinical course and treatment of acute epiglottitis in a series of adult patients.

METHOD

All adults with acute epiglottitis admitted to teaching hospital over a period of 12 months were included in this retrospective study. The diagnosis of epiglottitis was eatablished by laryngoscopy and soft tissue X-ray neck lateral view.

RESULTS

Twelve patients were included. Three patients had concurrent acute tonsillitis. Blood cultures were negative in all the cases. Pathogens were isolated by throat swabs only in three patients with acute tonsillitis. Two patients underwent intubation for management of airway obstruction. A combination of coamoxy-clav and metronidazole was the most common antibiotic regimen used.

CONCLUSION

The rising incidence of acute epiglottitis in the adults necessitates the close observance on the part of the otolaryngologist. Selective airway intervention is recommended for patients with more than 50% airway obstruction.

Sex differences in the incidence and severity of respiratory tract infections

Sex is a significant epidemiological factor for several diseases. However, the role of sex in the development and outcome of various infections has not been extensively studied with the notable exception of urinary tract infections. We searched in the PubMed database to identify articles that could provide relevant data regarding sex differences in the incidence and severity of respiratory tract infections (RTIs). We extracted data from 84 relevant studies that provided information regarding sex differences in the incidence and severity of RTIs. Females are more commonly affected with infections of the upper respiratory tract, specifically sinusitis, tonsillitis, and otitis externa. On the other hand, males are more commonly affected with otitis media, croup, and most important, lower RTIs. It is also evident from the reviewed evidence that the course of most RTIs is more severe in males than in females, leading to higher mortality in males, especially in community-acquired pneumonia. In conclusion, the available data suggest that males are more susceptible than females to most types of RTIs in all age groups (adults and children). Overall, it seems that males develop RTIs more frequently than females, except for sinusitis, otitis externa, and probably tonsillitis. Anatomic, lifestyle, behavioural, and socioeconomic differences between males and females may explain the observed findings. The role of sex hormones in the regulation of the immune system may also contribute to the reported sex differences in the incidence and severity of the various types of RTIs, especially in adolescents and adults.

The rising incidence of adult acute epiglottitis and epiglottic abscess

OBJECTIVE

To examine preliminary observations that the incidence of adult acute epiglottitis has risen between 1986 and 2000.

MATERIALS AND METHODS

Demographics, annual and seasonal occurrences, clinical presentation, diagnostic procedures, treatment, airway management, and complications of 116 consecutive adult patients with laryngoscopically confirmed acute epiglottitis are presented.

RESULTS

The mean annual incidence of acute epiglottitis per 100,000 adults significantly increased from 0.88 (from 1986-1990) to 2.1 (from 1991-1995) and to 3.1 (from 1996-2000) (P <.001). This rise seems to be unrelated to Haemophilus influenzae type b infection but related to miscellaneous pathogenic bacteria. During these periods, the number of epiglottic abscesses increased concomitantly with the rise in the incidence of acute epiglottitis (from 4/14 episodes [29%], to 8/38 [21%], and to 16/66 [24%], respectively), showing a relatively constant ratio between both phenomena (P =.843). Twenty-five patients (21%) underwent airway intervention, 16 because of objective respiratory distress and 9 because of imminent respiratory obstruction. Stepwise logistic regression showed that drooling, diabetes mellitus, rapid onset of symptoms, and abscess formation were associated with airway obstruction. Diverse origins for the epiglottic abscess, either from coalescent epiglottic infection or from mucopyocele of the tongue base, are suggested.

CONCLUSIONS

A rise in the incidence of acute epiglottitis and a concomitant rise in the number of epiglottic abscesses were established. Although the course of acute epiglottitis is often benign and can be safely treated with a conservative management approach, delayed airway obstruction may develop from a few hours to days after admission.